FPGA & CPLD
Subcategories
Products (124)
RTAX2000S-CQ352V - 2M-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX2000S-CQ352V is a radiation-tolerant FPGA from the RTAX-S family with 2,000,000 equivalent system gates, 21,504 combinational logic blocks (CLBs) organized as 32,256 logic cells, housed in a 352-pin hermetic ceramic quad flat package (CQ352) qualified for space-flight environments with an operating temperature range of -55C to +125C. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the ionizing radiation of orbital and deep-space environments, sitting within the broader hierarchy of programmable logic devices: FPGA -> radiation-tolerant FPGA -> space-grade semiconductor. Unlike reprogrammable SRAM FPGAs, RTAX-S devices use antifuse programmable interconnect that is inherently immune to configuration upsets and powers up live, eliminating the need for external configuration memory in a single-chip form factor. Key features include SEU-hardened flip-flops that reduce or eliminate the need for triple-module redundancy (TMR), low static power consumption typical of CMOS antifuse architecture, and true live-at-power-up operation. The CMOS logic family targets 2,000,000 system gates with 21,504 CLBs, providing substantial capacity for payload data processing, telemetry, and bus-interface logic on a single die. Architecturally, the RTAX2000S belongs to the RTAX-S/SL and RTAX-DSP radiation-tolerant FPGA series documented in the Microchip datasheet. The antifuse fabric is one-time programmable, which prevents ground-radiation-induced configuration loss; SEU immunity to a specified linear energy transfer threshold keeps single-event upset rates below 10^-10 errors per bit-day in typical orbits. Typical applications include satellite payload controllers, spacecraft on-board data handling, launch-vehicle avionics, and deep-space probe instrument interfaces where MIL-PRF-38535 QML class V screening is often required by the system specification. Design consideration: the CQ352 ceramic package arrives with leads on a tie bar that must be trimmed, formed, and de-golded before assembly; plan the manufacturing flow and verify the per datasheet supply-current budget against your power budget early. This page synthesizes distributor availability data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
RTAX2000SL-1CG1152V - 2M-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX2000SL-1CG1152V is a radiation-tolerant FPGA from the RTAX-S/SL family featuring 2,000,000 equivalent system gates, 32,256 logic cells, and 21,504 configurable logic blocks (CLBs) in a 1152-pin ceramic column grid array (CG1152) package with a -1 speed grade and V (space/flight) qualification flow. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the heavy-ion and proton environments encountered in Earth-orbiting and deep-space missions. Unlike commercial FPGAs, RTAX-S/SL devices combine an anti-fuse, one-time-programmable (OTP) fabric with design-level mitigation (triple-module redundancy implemented via Microchip tools), delivering single-chip solutions that are live at power-up without external configuration memory, which is a decisive advantage for spacecraft avionics, payload controllers, and instrument electronics. Key features of the RTAX2000SL include embedded SRAM blocks with built-in FIFO control logic, segmentable clock resources, chip-wide highway routing, and dedicated carry logic for arithmetic-intensive datapaths. The SL variant offers reduced power consumption relative to the earlier RTAX2000S, preserving heritage and radiation data continuity recognized by Microchip, ESA documentation, and industry practice. Architecturally, the device is a digital CMOS fabric based on the commercial Axcelerator accelerator family, re-manufactured on a radiation-tolerant flow. Design entry, synthesis, and timing sign-off are performed with Microchip Libero SoC and Actel/Microsemi legacy toolchains, enabling netlist migration from RTAX-S prototypes and Aldec flash-based adaptor-board prototyping. Typical applications include satellite payload data processing, spacecraft bus control, telemetry and telecommand interfaces, and radiation-exposed instrument controllers where a true single-chip, live-at-power-up FPGA is mandated. A critical design consideration is the OTP nature of the fabric: programming is irreversible, so full functional and timing sign-off in Libero plus flight-unit programming procedures are essential; prototype using the Aldec RTAX adaptor or Axcelerator equivalents. This page synthesizes verified distributor data, family cross-references, and space-program design guidance not consolidated in the manufacturer datasheet. Pricing is quote-based as of 2026-09-02.
RTAX2000SL-1CGS624B - Rad-Tolerant FPGA 2M Gates CCGA624 | Microchip
The Microchip Technology (Actel/Microsemi) RTAX2000SL-1CGS624B is a radiation-tolerant, antifuse-based Field Programmable Gate Array (FPGA) delivering 21,504 Configurable Logic Blocks (CLBs), an equivalent system gate density of 2,000,000 gates with an additional 250,000 ASIC gates, fabricated in CMOS on a 0.15 um process and housed in a 624-pin ceramic column grid array (CCGA/CBGA624, CGA-624) package. A radiation-tolerant FPGA is a programmable logic device engineered to survive the total ionizing dose (TID), single-event latchup (SEL), and single-event upset (SEU) environments of orbital and deep-space flight. Within the power-management hierarchy of a spacecraft avionics stack, the FPGA sits between the onboard computer and mission-specific interface electronics, implementing glue logic, bus interfaces, and payload processing. The RTAX-S/SL family is derived from the commercial Microsemi Axcelerator architecture, adapted for space flight with live-at-power-up operation and a true single-chip form factor. Key differentiating features include the one-time-programmable antifuse interconnect, which is inherently immune to configuration upsets caused by radiation, embedded SRAM blocks with built-in FIFO control logic, segmentable clocking resources, and chip-wide enabling features. The -1 speed grade and 1.5V core supply support clock rates up to several hundred megahertz in the RTAX-SL family, enabling demanding onboard data processing. Architecturally, the device combines Core tiles of logic modules (C-cells and R-cells) with embedded SRAM FIFO modules and I/O clusters, all interconnected through the low-skew antifuse routing fabric. Because configuration is hard-wired at programming time, no external configuration PROM or configuration bitstream upload is required at power-up, reducing system parts count and boot risk. Typical applications include satellite avionics and platform control, payload data processing and compression, spacecraft bus interfacing (MIL-STD-1553, SpaceWire, CAN), launch vehicle flight control electronics, and instrumentation for scientific missions. A key design consideration is that antifuse FPGAs are one-time programmable: design sign-off must be complete before device programming, so engineers typically prototype on flash-based devices such as Microchip ProASIC3E using Aldec RTAX prototyping adaptors before committing. This page synthesizes verified distributor data, drop-in same-package alternatives, and practical design guidance not consolidated in the manufacturer datasheet.
RTAX2000SL-1CGS624EV - 2M-Gate Rad-Tolerant FPGA | Microchip
The Microchip (Actel/Microsemi) RTAX2000SL-1CGS624EV is a radiation-tolerant FPGA from the RTAX-S/SL family offering 2,000,000 equivalent system gates, 32,256 logic cells, and CMOS anti-fuse one-time-programmable (OTP) technology, housed in a 624-terminal ceramic column grid array (CGS624) package qualified for space-flight applications. The -1 speed grade and E-designator denote a specified flow for space programs requiring enhanced qualification screening. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the total ionizing dose (TID), single-event latchup (SEL), and single-event upset (SEU) environments of orbital and deep-space missions. Within the power hierarchy, it sits in the programmable logic family alongside the commercial Axcelerator, ProASIC3, and Igloo devices, bridging the gap between standard COTS FPGAs and fully radiation-hardened ASICs. RTAX-S/SL devices are live-at-power-up because the anti-fuse configuration is permanent and needs no configuration flash or external boot device. Key features include up to four million equivalent system gates across the family, embedded SRAM blocks with built-in FIFO control logic, segmentable clock circuitry, and chip-wide highway routing. The RTAX2000SL provides 21,504 CLBs and supports an additional 250,000 ASIC gates for hardening-by-design flows when a mission later migrates to an RTAX-H or ASIC implementation. Low static power consumption and a true single-chip form factor reduce board area, mass, and power budgets, which are critical constraints on satellites and planetary probes. Architecturally, the device is based on the commercial Axcelerator fabric, giving designers a proven sea-of-modules structure with embedded FIFO and dual-port SRAM capability. Because the anti-fuse interconnect is programmed once, designs are immune to configuration upsets, and only user flip-flops require SEU mitigation techniques such as triple modular redundancy (TMR). Typical applications include satellite payload data processing, spacecraft bus controllers, telemetry and telecommand interfaces, and sensor front-end digital signal conditioning for LEO, MEO, and GEO missions. The Aldec RTAX prototyping adaptor allows flash-based ProASIC3E prototyping before committing to one-time programming. A key design consideration is that the OTP fabric cannot be reprogrammed in flight or on the board after programming, so functional coverage and radiation test planning must be complete before lot commit. Pricing and availability for this space-grade part are quote-based; contact XAIPART for current figures as of 2026-09-02. This page synthesizes drop-in alternatives, comparison data, and practical design guidance not consolidated in the manufacturer datasheet.
RTAX2000SL-1CGS624V - 2M-Gate Rad-Tolerant FPGA | Actel/Microchip
The Actel (Microchip Technology) RTAX2000SL-1CGS624V is a 2,000,000-gate radiation-tolerant antifuse FPGA in a 624-ball ceramic CGA (CGS624) package, offering up to 684 user I/Os, 540 kbits of embedded SRAM, and total ionizing dose tolerance of 300 krad (functional) / 200 krad (parametric) with SEU rates below 1E-10 errors per bit-day. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the ionizing radiation and single-event effects of the space environment, where commercial silicon would suffer latch-up, gate rupture, or bit-flip corruption. RTAX-S/SL devices sit at the top of the space FPGA hierarchy: FPGA -> radiation-tolerant FPGA -> space-flight digital logic IC -> semiconductor. Key features include highly reliable nonvolatile antifuse technology that is live-at-power-up with no configuration boot time, true single-chip operation eliminating external configuration flash (a security and board-area advantage), and embedded SRAM blocks with built-in FIFO control and optional EDAC protection for memory reliability. Derived from the commercial Axcelerator family, the RTAX-SL architecture delivers high-performance system-level features such as segmentable clock regions and chip-wide highway routing. Technically, the device is fabricated in CMOS with 21,504 CLB cells per Microchip USA data for the RTAX2000 series, supporting single-ended and differential I/O standards at 2.5V/3.3V banks and a 1.5V core supply. The S suffix on CGS624V denotes a space-grade screening flow, with the V suffix marking the qualification level and -1 the speed grade. Typical applications include satellite payload data processing, spacecraft command and telemetry control, remote sensing image handling, launch-vehicle avionics, and downlink/signal-chain glue logic in low-Earth-orbit and deep-space missions where SEU immunity and TID tolerance are mission-critical. Design consideration: RTAX-S/SL devices are one-time-programmable, so designers must prototype against reprogrammable equivalents and reserve I/O and capacity margin before committing the flight unit. This page synthesizes distributor listings, drop-in same-footprint family alternatives, and practical design guidance not consolidated in the manufacturer datasheet.
RTAX2000SL-1CQ256V - 2M-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology RTAX2000SL-1CQ256V is a radiation-tolerant, antifuse-based FPGA offering approximately 2,000,000 equivalent system gates, 32,256 logic cells, and 21,504 configurable logic blocks (CLBs) in a 256-pin ceramic CQFP (CQ256) package for space-flight applications. The device supports a maximum clock frequency of up to 649 MHz and is fabricated in CMOS technology with the -1 speed grade and V military/qualification flow indicated by the ordering code. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the total ionizing dose (TID), single-event latchup (SEL), and single-event upset (SEL/SEU) environment of orbital and deep-space missions. Within the power-management-of-systems hierarchy, FPGAs sit at the digital processing layer above ASICs (lower NRE risk) and below microcontrollers (higher parallelism). The RTAX-S/SL family is derived from the commercial Axcelerator architecture and uses one-time-programmable antifuse interconnect, which is inherently immune to configuration-memory upset. Key features include live-at-power-up operation (no configuration load time, unlike SRAM FPGAs), a true single-chip form factor requiring no external configuration device, embedded SRAM blocks with built-in FIFO control logic, segmentable clocks, chip-wide highway routing, and dedicated carry logic for arithmetic-intensive designs. Technically, the SL variant of the RTAX2000 die reduces static power consumption versus the standard RTAX2000S, a decisive advantage for solar- and battery-powered spacecraft payloads. Densities in the family reach four million equivalent system gates, and the RTAX-DSP variants add dedicated multiply-accumulate blocks for onboard signal processing. Typical applications include satellite payload data processing, spacecraft bus controllers, telemetry and telecommand interfaces, and instrument control in low-Earth-orbit and deep-space science missions. A key design consideration is that antifuse FPGAs are one-time programmable: all prototyping must be done on the companion RTAX2000SL-1CQ256PROTO device or a footprint-compatible ProASIC3E-based adaptor board before committing flight units. This page synthesizes distributor pricing, drop-in alternatives, design notes, and AI-optimized FAQs not found in the manufacturer datasheet.
RTAX2000SL-1CQ352V - 2M-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX2000SL-1CQ352V is a radiation-tolerant FPGA from the RTAX-S/SL family offering 2,000,000 equivalent system gates, 21,504 CLBs (32,256 logic cells), and operation from a nominal 1.5V core supply (range 1.425V to 1.575V), housed in a 352-pin ceramic column grid array package for space-flight applications. A radiation-tolerant FPGA is a field-programmable gate array qualified and characterized for the space radiation environment, where total ionizing dose (TID) and single-event effects (SEE) can upset conventional commercial devices. Within the power-management hierarchy of spacecraft electronics, the FPGA sits alongside rad-hard ASICs and microcontrollers as the flight-computing logic tier, providing reprogrammable glue logic, bus interfaces, and payload data-path functions on orbit. Key differentiating features of the RTAX-S/SL family include true single-chip form factor, live-at-power-up operation, and low static power consumption - all cited by Microchip as the reasons RTAX-S remains the FPGA of choice for space designers. The SL variant incorporates enhanced single-event upset mitigation relative to the base RTAX-S fabric, and the device supports embedded SRAM blocks with built-in FIFO control logic, segmentable clock resources, and chip-wide highway routing derived from the commercial Axcelerator architecture. Technically, the RTAX2000SL is based on a 0.15-micron CMOS process with antifuse one-time-programmable interconnect, which is inherently immune to configuration upset - a fundamental advantage over SRAM-based FPGAs in orbit, since no external configuration PROM or scrubbing controller is required. This yields lower board area, lower power, and higher design security for launch vehicles, satellites, and deep-space probes. Typical applications include satellite payload processing and telemetry interfaces, spacecraft bus control and housekeeping logic, launch-vehicle avionics, and deep-space instrument data acquisition - anywhere substantial logic capacity, deterministic power-up, and radiation tolerance must coexist. A key design consideration: because RTAX-S/SL devices are one-time programmable, all prototyping must be completed using the companion RTAX2000SL-1CQ352PROTO part or the Aldec flash-based ProASIC3E prototyping adaptor before committing flight hardware. This page synthesizes verified web data, drop-in same-package alternatives from the RTAX family, and practical design notes not consolidated in the manufacturer datasheet.
RTAX2000SL-CG1152V - 2M-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology RTAX2000SL-CG1152V is a radiation-tolerant FPGA from the RTAX-S/SL family offering 2,000,000 equivalent system gates, 32,256 logic cells organized into 21,504 configurable logic blocks (CLBs), housed in a 1152-pin ceramic column grid array (CG1152) package designed for space-flight systems. A radiation-tolerant FPGA is a field-programmable gate array qualified to survive the total ionizing dose (TID) and single-event effects encountered in orbital and deep-space missions. Within the power-management hierarchy of spacecraft avionics, the RTAX-S/SL family sits alongside rad-hard microcontrollers and memories as the reprogrammable logic element, based on the commercial Microsemi (Actel) Axcelerator architecture and manufactured on a digital CMOS process. Key features include live-at-power-up operation thanks to its antifuse-based, one-time-programmable (OTP) fabric, a true single-chip form factor that eliminates external configuration devices, low-power consumption relative to SRAM FPGAs, embedded SRAM blocks with built-in FIFO control logic, segmentable clock resources, and chip-wide highway routing for high-fanout signals. The SL suffix denotes a lower-power variant of the standard RTAX2000S die. Technically, the device leverages the Axcelerator cluster-based logic structure with D-shaped flip-flops in each logic element, delivering high register-rich performance for pipeline-intensive space applications such as on-board data processing, telemetry encoding, and sensor interfacing. Design migration from the commercial Axcelerator family is supported through a footprint-compatible adaptor board and EDIF netlist conversion methodology for prototyping. Typical applications include satellite payload data handling, spacecraft bus avionics, instrument control in Earth-observation platforms, and fault-tolerant logic in launch vehicles - environments where TID endurance and single-event-upset immunity outweigh in-field reprogrammability. A key design consideration is that the antifuse fabric is OTP: a programming error produces an unusable device, so flight designs should be validated using the Aldec/Microchip flash-based ProASIC3E prototyping adaptor or the RTAX2000SL-1LG1152PROTO engineering part before flight-unit programming. This page synthesizes distributor cross-references, drop-in same-footprint alternatives, pricing-inquiry tiers, and practical space-design notes not consolidated in the manufacturer datasheet.
RTAX2000SL-CQ256V - 2M-Gate Rad-Tolerant FPGA | Microchip
The Microchip (Actel/Microsemi) RTAX2000SL-CQ256V is a radiation-tolerant, antifuse-based FPGA with approximately 2,000,000 system gates, 21,504 Configurable Logic Blocks, and 32,256 logic cells, housed in a 256-pin ceramic CQFP (CQ256) hermetic package qualified for space-flight systems. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the ionizing radiation environment of space, where total ionizing dose (TID), single-event latchup (SEL), and single-event upset (SEU) can disable commercial silicon. Within the power-management hierarchy of spacecraft avionics, the RTAX-S/SL family sits at the digital payload and data-processing tier, implementing mission logic, telemetry formatting, and protocol bridging between instruments, CPUs, and downlink electronics. Key features of the RTAX2000SL include nonvolatile antifuse programming that makes the device live-at-power-up with no configuration PROM required, up to 300 krad (functional) and 200 krad (parametric) total dose tolerance, SEU susceptibility below 1E-10 errors per bit-day, and up to 540 kbits of embedded SRAM with optional EDAC protection for error-resistant block memory. The family supports up to 684 user I/Os at the top of the package range; the CQ256 variant dedicates its 256 ceramic pins to power, ground, JTAG, and user signals. Architecturally, the RTAX2000SL combines VersaTiles (fine-grained logic modules) with embedded clock-management circuitry, supporting registered clock frequencies into the hundreds of MHz range. The SL variant optimizes the base RTAX2000S die for enhanced total-dose performance, which is why many flight programs specify the SL suffix for longer missions and higher-radiation orbits such as MEO and interplanetary trajectories. Typical applications include satellite payload data processing, spacecraft bus controllers, instrument control for Earth-observation platforms, and reconfigurable glue logic for rad-hard SoC implementations in LEO, MEO, and deep-space missions. Design consideration: because the antifuse is one-time programmable, the standard flow prototypes on the RTAX2000S-1CQ256PROTO device or an Aldec flash-based adaptor, then migrates the EDIF netlist to the flight unit. This page synthesizes distributor sourcing data, drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.
RTAX250S-1CG624B - 250K-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology RTAX250S-1CG624B is a radiation-tolerant FPGA from the RTAX-S family offering 250,000 equivalent system gates and 2,816 configurable logic blocks (CLBs) in a 624-pin ceramic column grid array (CCGA-624) package. It operates at a maximum clock frequency of 649 MHz with a nominal 1.5 V core supply (1.425 V to 1.575 V range) and a military operating temperature range of -55C to +125C. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the single-event effects and total ionizing dose environments of space flight. Within the programmable logic hierarchy, it sits above commercial FPGAs and below fully radiation-hardened ASICs, providing a single-chip, live-at-power-up solution for spacecraft avionics, payload processing, and telemetry systems. The RTAX-S family is based on the Microsemi Axcelerator commercial architecture adapted for space. Key features include SEU-hardened flip-flops that eliminate the need for triple module redundancy (TMR) in many designs, immunity to single-event upsets, SEU error rates below 10-10 errors per bit-day, and embedded SRAM blocks with built-in FIFO control logic. The anti-fuse programmable fabric is inherently one-time programmable and immune to configuration upsets, giving a true single-chip form factor with no external configuration device required. Technically, the device is fabricated on a 0.15 um CMOS process with a combinatorial CLB propagation delay of 0.95 ns maximum. Segmentable clock structures, chip-wide I/O features, and dedicated arithmetic support make it suitable for high-throughput spaceflight data paths. Embedded FIFO and dual-port SRAM resources offload external memory requirements in payload computers. Typical applications include satellite onboard data handling, radiation-environmental payload processing, spacecraft command and telemetry interfaces, and deep-space instrument control where live-at-power-up operation and SEU robustness are mandatory. Design consideration: budget the 1.5 V core supply rail within the 1.425 V to 1.575 V window and account for CCGA solder-column attachment and rework constraints at the board level; verify radiation lot acceptance data for the specific mission LET requirement. This page synthesizes distributor pricing tiers, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
RTAX250S-1CG624V - 250k Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX250S-1CG624V is a radiation-tolerant FPGA from the RTAX-S family with 250,000 equivalent system gates, 2,816 Configurable Logic Blocks (CLBs) organized as 4,224 cells, in a 624-terminal Ceramic Grid Array (CGA) package with V-grade space screening and a -55C to +125C operating range. A radiation-tolerant FPGA is a programmable logic device engineered to survive the heavy-ion and proton environments of space flight. Within the power-management hierarchy of spacecraft avionics, FPGAs like the RTAX-S family sit at the board level as the main logic fabric, bridging payload processors, telemetry interfaces, and sensor front ends. The RTAX-S family is based on the commercial Microsemi Axcelerator architecture and uses antifuse programmable technology, which gives it inherent single-event-upset (SEU) immunity in the configuration fabric. Key features include live-at-power-up operation (no configuration boot time, critical for spacecraft autonomy), a true single-chip form factor that eliminates external configuration flash, and low static power consumption valuable for power-limited missions. The antifuse fabric cannot lose its programmed state to radiation, unlike SRAM-based FPGAs. Architecturally, the RTAX250S embeds SRAM blocks with built-in FIFO control logic, segmentable clock-conditioning circuits, chip-wide reset, and I/O clusters, delivering high performance in the AX250-class density tier. Combinatorial delay of a CLB is up to 0.930 ns for the -1 speed grade. Typical applications include satellite payload data processing, spacecraft bus control, telemetry and command interfaces, and radiation-environment instrumentation where reprogrammable prototyping on Axcelerator devices (per Microchip application note AC170) precedes flight-unit programming. Design consideration: antifuse devices are one-time programmable, so full design verification must be completed on prototype adaptors or commercial equivalents before committing flight hardware. This page synthesizes distributor sourcing data, same-brand drop-in packaging variants, and practical design notes not found in the manufacturer datasheet.
RTAX250S-1CQ352V - 250K-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Microsemi/Actel) RTAX250S-1CQ352V is a radiation-tolerant FPGA from the RTAX-S family featuring 250,000 equivalent gates, 4,224 logic cells, and 2,816 CLBs, fabricated on CMOS technology and housed in a 352-pin ceramic column quad flat package (CQ352) qualified for spaceflight applications. A radiation-tolerant FPGA is a programmable logic device designed to survive the heavy-ion and proton radiation environments encountered in low-Earth-orbit and deep-space missions. Within the power hierarchy, the RTAX250S-1CQ352V sits in the space-grade FPGA category, derived from Actel's Axcelerator commercial FPGA architecture and positioned above commercial-grade and industrial-grade programmable logic in environmental robustness. The RTAX-S family is Microchip's flagship antifuse-based radiation-tolerant FPGA line for satellite payloads, launch vehicles, and planetary probes. Key features include 250,000 equivalent system gates plus 30,000 ASIC gates for embedded functions, single-chip live-at-power-up operation enabled by antifuse interconnect that requires no configuration device, and low power consumption compared with SRAM-based space FPGAs. The core operates from a nominal 1.5V supply with a 1.425V to 1.475V to 1.575V allowable range, and the -1 speed grade provides timing suitable for moderate-frequency spacecraft logic. Architecturally, the RTAX250S uses Axcelerator-class logic modules with efficient carry chains, embedded SRAM blocks, and abundant routing resources, allowing designers to implement spacecraft data processing, telemetry, and control logic in one device. The CQ352 hermetic ceramic package protects the die against thermal cycling and moisture ingress during launch and orbit. Typical applications include satellite on-board data handling, payload control and sequencing, instrument interfacing, and bus avionics for LEO, MEO, and GEO missions. Design consideration: the antifuse device is one-time programmable, so full functional verification using Microchip application note AC170 (prototyping RTAX-S on commercial Axcelerator devices) is strongly recommended before committing flight units. This page synthesizes verified distributor data, drop-in alternatives, and design guidance not consolidated in the manufacturer datasheet.
RTAX250S-1LG624B - Rad-Tolerant FPGA 250K Gates | Microchip
The Microchip Technology (Actel/Microsemi) RTAX250S-1LG624B is a radiation-tolerant FPGA from the RTAX-S family offering 250,000 equivalent system gates, 2816 logic cells, and up to 649 MHz system performance in a 624-pin ceramic LGA (LG624) package, operating from a 1.5V core supply at speed grade -1 with military screening. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the ionizing radiation environment of space: high total ionizing dose (TID), heavy-ion single-event effects (SEE), and proton exposure. Within the semiconductor hierarchy, the RTAX250S-1LG624B belongs to the RTAX-S family -> radiation-tolerant FPGA -> FPGA -> programmable logic IC, and is the space-flight counterpart of the commercial Axcelerator family from Microsemi. Key features include single-chip, anti-fuse-based, live-at-power-up operation (no external configuration PROM needed, no configuration bitstream to upset), embedded SRAM blocks with built-in FIFO control logic, segmentable clock conditioning, and chip-wide highway routing. The -1 speed grade supports internal performance up to 649 MHz, and the CMOS 0.15um process with 1.5V core delivers low static power consumption, which is critical for solar- and battery-powered spacecraft. Architecturally, the RTAX-S fabric combines patented antifuse interconnect with 3-input D-flip-flop-based logic modules, providing 100% routability and immunity to configuration memory upsets that plague SRAM-based FPGAs in orbit. The embedded FIFO control and chip-wide highway routing resources let designers implement high-throughput payload data paths with predictable timing. Typical applications include satellite telemetry/command interfaces, payload data processing, orbital platform bus controllers, and launch-vehicle avionics, where the LG624 ceramic package provides hermetic, high-reliability mechanical and thermal integration. Design tip: use the footprint-compatible Axcelerator prototyping flow (adaptor board plus EDIF netlist/pinout converter) to validate designs on commercial parts before committing to flight units. This page synthesizes distributor inventory signals, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet.
RTAX250S-1LG624E - 250K-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology RTAX250S-1LG624E is a radiation-tolerant field-programmable gate array (FPGA) from the RTAX-S family, delivering 250,000 equivalent gates and 2,816 configurable logic blocks (4,224 logic cells) in a 624-pin LGA package with a 1.5V core supply and system performance up to 649 MHz on 0.15 um CMOS technology. A radiation-tolerant FPGA is a programmable logic device qualified for the space-flight radiation environment, sitting in the device hierarchy above commercial FPGAs: programmable logic -> FPGA -> radiation-tolerant FPGA -> space-flight electronics. Unlike one-time-programmable anti-fuse devices that require external configuration, RTAX-S devices combine anti-fuse fabric with live-at-power-up operation, giving designers a true single-chip form factor without a configuration PROM in many system architectures. Key features include low static power consumption, live-at-power-up operation immediately after the supply rails settle, and the high logic density needed for spacecraft payload processing, telemetry formatting, and bus-interface logic. The -1 speed grade balances timing performance against power, while the 624-pin land-grid array provides a high I/O count for memory interfaces, redundant buses, and instrument front ends. Architecturally, the RTAX250S uses Microchip (Actel) axcelerator-derived logic modules arranged in a cluster-based fabric, supported by embedded SRAM blocks and clock-conditioning resources, implemented on a 0.15 um CMOS process optimized for total ionizing dose (TID) and single-event effect robustness. Design flows use Libero SoC with timing-verified libraries and radiation reports for SET/SEU mitigation planning. Typical applications include satellite on-board data handling, payload data processing and compression, spacecraft attitude-control and telemetry systems, and launch-vehicle avionics where radiation tolerance and single-chip reliability are mandatory. A key design consideration is prototyping: because the anti-fuse fabric is one-time programmable, Microchip recommends prototyping on footprint-compatible ProASIC3-based adaptor boards (for example the Aldec RTAX prototyping solution) before committing hardware, per the RTAX-S/SL datasheet application methodology. This page synthesizes verified distributor data, drop-in same-package alternatives, and practical design guidance not found in the manufacturer datasheet, with pricing referencing as of 2026-09-02.
RTAX250S-CG624EV - 250K-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX250S-CG624EV is a radiation-tolerant FPGA from the RTAX-S family delivering 250,000 equivalent system gates organized as 2816 configurable logic blocks (4224 logic cells), with a maximum clock frequency of 649 MHz, fabricated on a 0.15 um CMOS process at a nominal 1.5V core supply, and housed in a 624-terminal Ceramic Grid Array (CGA/CCGA) package rated from -55C to +125C. A radiation-tolerant FPGA is a programmable logic device engineered to survive the single-event upset (SEU) and total-ionizing-dose environment of orbital and deep-space missions. Within the space electronics hierarchy, the RTAX-S family sits under radiation-tolerant FPGAs -> space-flight programmable logic -> flight hardware, offering a true single-chip, live-at-power-up alternative to reprogrammable devices that require configuration storage. Key features include SEU-hardened flip-flops that eliminate the need for Triple Module Redundancy (TMR) in many designs, SEU immunity up to a specified LET threshold with an SEU rate below 10-10 errors per bit-day, and the anti-fuse, live-at-power-up architecture that removes configuration readback vulnerabilities. The ceramic column grid array package supports the high pin count needed for wide data buses and spacewire-style payloads. Technically, the device uses the Axcelerator-derived fabric with fine-grained logic clusters, and designs are prototyped on equivalent commercial Axcelerator devices via Microchip's documented migration flow and Extender circuit boards. Typical applications include satellite payload processing, spacecraft telemetry and command interfaces, and instrument control in launch vehicles and deep-space probes. Design consideration: verify speed-grade suffix, power budget, and radiation report applicability before layout, since EV/evaluation ordering variants carry specific flow requirements. This page adds value beyond the datasheet by consolidating drop-in CG624 family alternatives, comparison tables, and sourcing guidance not present in the manufacturer documentation.
RTAX250S-CQ208V - 250K Gate Rad-Tolerant FPGA CQFP-208 | Microchip
The Actel (Microsemi, now Microchip Technology) RTAX250S-CQ208V is a radiation-tolerant FPGA from the RTAX-S family providing 250,000 equivalent system gates (with an alternative 30,000 ASIC-gate option), 2,816 logic cells organized as configurable logic blocks (CLBs), a maximum toggle performance of 649 MHz, and a 208-pin ceramic quad flat pack (CQFP) package with V qualification (military/space screening). The device is fabricated on a 0.15 um CMOS process and operates from a 1.5V core supply. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the total ionizing dose (TID) and single-event effects found in space-flight orbits. Within the power hierarchy of space electronics, RTAX-S sits between commercial FPGAs (unsuitable for orbit) and full rad-hard ASICs: it inherits an ASIC-like anti-fuse fabric for SEU-immune configuration while remaining programmable, making it the workhorse programmable logic device for satellites and planetary probes. Key features include anti-fuse one-time-programmable (OTP) configuration that is live-at-power-up with no external boot ROM or configuration flash, low static power consumption on a 1.5V core, and a true single-chip form factor that eliminates the radiation-exposed configuration memory device required by SRAM FPGAs. The 649 MHz internal performance supports high-throughput data paths such as spaceborne DSP and telemetry encoding. Architecturally, the RTAX250S uses the Axcelerator-derived fabric: cluster logic modules (vsModules) combining C-cells and R-cells, plus embedded SRAM/banked FIFO blocks, enabling registered high-speed pipelines. The metal-layer programmable anti-fuse interconnect is inherently immune to configuration upset, an advantage over SRAM-based space FPGAs. Typical applications include satellite payload data processing, spacecraft command and telemetry (C&DH) systems, GNSS/radio front-end glue logic, and instrument control on orbital and deep-space platforms. Design consideration: use the Microchip Libero SoC flow and prototype on the commercial AX250S device per application note AC170 before committing to the OTP anti-fuse - errors cannot be reprogrammed. This page synthesizes distributor listings, drop-in same-footprint alternatives, and practical design notes not found in the manufacturer datasheet.
RTAX250S-CQ352V - 250K-Gate Rad-Tolerant FPGA CQFP-352 | Microchip
The Microchip Technology (Actel/Microsemi) RTAX250S-CQ352V is a radiation-tolerant FPGA from the RTAX-S family with 250,000 equivalent system gates, 4,224 logic cells (2,816 CLBs), and a 649 MHz maximum toggle rate, fabricated in 0.15 um CMOS technology and housed in a 352-pin ceramic quad flat pack (CQFP) package with a 1.5 V nominal core supply (1.425 V to 1.575 V). A radiation-tolerant FPGA is a programmable logic device qualified to survive the total ionizing dose (TID) and single-event effects encountered in orbital and deep-space environments. Within the power-management-free space-flight signal chain, the FPGA sits above board-level housekeeping ICs and provides the primary digital processing, telemetry formatting, and control-sequencing capability of a spacecraft payload or platform. Key differentiating features include true single-chip form factor (no external configuration device required), live-at-power-up operation enabled by the antifuse architecture, and low static power consumption, which combine to make RTAX-S the FPGA of choice for space designers according to Microchip product literature. Technically, the RTAX-S uses a 0.15 um antifuse-based CMOS process with a sea-of-modules fabric; once programmed, connections are permanent and immune to configuration upsets, an architectural advantage over SRAM FPGAs in orbit where configuration memory is vulnerable to single-event upsets (SEU). Typical applications include satellite avionics and payload data processing, radiation-tolerant telemetry and telecommand interfaces, and instrument control on low-Earth-orbit and deep-space missions where TID tolerance and single-chip implementation are mandatory. Design consideration: because the antifuse fabric is one-time programmable, full functional verification must be completed in prototyping (for example with the commercial Axcelerator flow and PROTO devices described in the Microchip AC170 application note) before flight programming. This page synthesizes verified distributor data, drop-in alternatives within the same CQ352 footprint, and space-design guidance not found on a single manufacturer page.
RTAX250S-LG624B - Rad-Tolerant FPGA 250K Gates | Microchip
The Microchip Technology RTAX250S-LG624B is a radiation-tolerant FPGA from the RTAX-S family delivering 250,000 equivalent system gates, 2816 configurable logic blocks (CLBs) supporting up to 4224 logic cells, and system performance up to 649 MHz, fabricated on a 0.15 um CMOS process with a 1.5V core supply and housed in a 624-pin LGA (LG624) package. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the ionizing radiation environment of spaceflight, including total ionizing dose (TID) effects and single-event effects (SEE), where commercial FPGAs would experience configuration upsets or permanent damage. The RTAX-S family occupies the rad-tolerant tier of the space-grade programmable logic hierarchy, below full radiation-hardened parts, and is a direct successor lineage of the Actel/Microsemi Axcelerator architecture. Key features include one-time-programmable (OTP) antifuse technology that is live-at-power-up, eliminating configuration memory upset concerns at turn-on, a true single-chip form factor that removes the need for external configuration devices, and low-power consumption valued in power-constrained satellite platforms. Embedded SRAM blocks include built-in FIFO control logic, and the architecture provides segmentable clocks, chip-wide highway routing, and carry logic for arithmetic pipelines. The 0.15 um CMOS process with a 1.5V core combines high toggle rates (649 MHz maximum system speed) with acceptable static power, while the 624-pin LGA offers high I/O density for payload data handling. Clocking resources are segmentable, allowing isolated timing domains for different functional blocks. Typical applications include satellite payload data processing, spacecraft on-board computers, telemetry and telecommand interfaces, and space science instrument control where SEU-robust logic is mandatory. Design consideration: use Microchip application note AC170, which maps designs to commercial Axcelerator devices on footprint-compatible adapter boards for prototyping before committing to the OTP RTAX-S device. This page synthesizes distributor data, drop-in same-family alternatives, prototyping methodology, and procurement guidance not consolidated in the manufacturer datasheet.
RTAX250S-LG624E - 250K Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX250S-LG624E is a radiation-tolerant FPGA from the RTAX-S family with 250,000 system gates and 2,816 logic cells, implemented in a 0.15 um CMOS process, operating at up to 649 MHz internal toggle performance from a 1.5V core supply, and housed in a 624-pin ceramic LGA (CGA-624) package rated from -55C to +125C. A radiation-tolerant FPGA is a field programmable gate array designed to survive the radiation environment of space without the full cost and schedule burden of a radiation-hardened ASIC. Within the power-management hierarchy of spacecraft avionics, an FPGA such as the RTAX-S sits between radiation-hardened microcontrollers and full custom ASICs, providing configurable glue logic, data path processing, and bus interfacing for satellites, planetary probes, and launch vehicles. Key features of the RTAX250S include SEU-hardened registers that eliminate the need for Triple Module Redundancy (TMR), immunity to Single-Event Upsets (SEU) at specified LET thresholds, and an SEU error rate of less than 10-10 errors per bit-day, which is critical for long-duration missions. True single-chip form factor and live-at-power-up operation remove the need for external configuration devices, while low static power consumption suits energy-constrained spacecraft power budgets. Technically, the RTAX-S family uses an antifuse-based architecture that is inherently tolerant to configuration upsets: once programmed, the routing cannot be disturbed by radiation-induced charge. The 0.15 um metal-to-metal antifuse process combines ASIC-like security and low power with post-manufacturing programmability. Registered logic elements are rad-hardened at the design level, and the CGA-624 ceramic column grid array package provides hermetic sealing and mechanical robustness for launch vibration and thermal cycling. Typical applications include satellite on-board data handling, payload telemetry and command processing, spacewire and CAN bus interface bridges, attitude control electronics, and instrument front-end sequencing on Earth-observation and deep-space missions. A key design consideration is that antifuse FPGAs are one-time programmable, so engineering prototypes must be validated on footprint-compatible development tools, such as the Microchip/Aldec RTAX adaptor boards, before flight-unit programming. Use the Prototyping for RTAX-S and RTAX-SL Devices application note methodology with an EDIF netlist and pinout converter. This page synthesizes distributor listings, drop-in same-family alternatives, and practical design guidance not consolidated in the manufacturer datasheet, helping space engineers select the correct RTAX-S orderable part quickly.
RTAX250SL-1CG624B - 250K-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology RTAX250SL-1CG624B is a radiation-tolerant FPGA from the RTAX-SL family delivering 250,000 equivalent system gates organized as 2816 Configurable Logic Blocks (CLBs), with a maximum clock frequency of 649 MHz, a 0.15 um process technology, and a 1.5V core supply, housed in a 624-pin Ceramic Column Grid Array (CCGA) package in a boxed orderable format. A radiation-tolerant FPGA is a programmable logic device qualified and designed for space-flight environments, where ionizing radiation causes single-event effects (SEE) and total ionizing dose (TID) degradation in conventional silicon. The RTAX-S/SL family descends from the Microsemi commercial Axcelerator FPGA family, inheriting its high-performance architecture while adding radiation-hardening-by-design and process-level tolerance, placing it within the broader hierarchy of programmable logic ICs: FPGA -> radiation-tolerant FPGA -> space-grade programmable logic. Key differentiating features include true single-chip form factor (unlike SRAM FPGAs requiring configuration PROMs), live-at-power-up operation enabled by flash-based/antifuse programming, embedded SRAM with built-in FIFO control logic, segmentable clock resources, and chip-wide highway routing. The 0.15 um process yields a maximum CLB combinatorial delay of 0.930 ns, supporting high-throughput onboard data processing at 649 MHz. Architecturally, the RTAX250SL is based on the Axcelerator structure: clusters of logic modules connected via a segmented routing fabric, with embedded SRAM blocks providing dual-port memory and FIFO functionality. Densities across the family extend up to four million equivalent system gates, letting designers scale designs within one toolchain (Libero SoC) and one prototyping methodology. Typical applications include satellite payload data processing, telemetry/command (TM/TC) interfaces, spacecraft bus control, software-defined radios in orbit, and instrument control for space science missions. The CCGA package's ceramic construction withstands reflow profiles and thermal cycling in launch and orbital environments. A key design consideration: the -1 speed grade and CCGA624 ball map must be verified against board layout early, since antifuse FPGAs are one-time-programmable and cannot be reconfigured after assembly. Use the manufacturer's prototyping flow (footprint-compatible adaptor board and EDIF netlist conversion) to validate logic on commercial equivalents before committing flight units. This page synthesizes distributor listings, radiation-tolerant FPGA design context, and drop-in alternatives from the same RTAX250SL CG624 family - information not consolidated on any single manufacturer or distributor page.
RTAX250SL-1CG624E - 250K Gate Rad-Tolerant FPGA, CCGA-624 | Microchip
The Microchip Technology (formerly Microsemi/Actel) RTAX250SL-1CG624E is a radiation-tolerant FPGA offering 250,000 equivalent system gates, 2816 configurable logic blocks (CLBs), and a maximum combinatorial delay of 0.93 ns, housed in a 624-ball ceramic column grid array (CCGA-624) package qualified for operation from -55C to +125C. A radiation-tolerant FPGA is a field-programmable gate array specifically designed to survive the heavy-ion and proton environments encountered in Earth-orbiting and deep-space missions. Within the semiconductor hierarchy, it belongs to the RTAX-S/SL family, derived from the commercial Microsemi Axcelerator architecture, positioned alongside other space-grade programmable logic such as antifuse and flash-based radiation-hardened devices. Key features include SEU-hardened flip-flops that eliminate the need for triple module redundancy (TMR), immunity to single-event upsets at specified linear energy transfer thresholds, and SEU rates below 10-10 errors per bit-day in typical orbits. The device operates from a 1.5V core supply (1.425V to 1.575V range), uses 0.15um CMOS technology, and supports system clock rates up to 649 MHz. Embedded SRAM blocks with built-in FIFO control logic, segmentable clock resources, and chip-wide highway routing round out the system-level feature set. Architecturally, the RTAX250SL combines the Axcelerator fabric with radiation-tolerant design techniques at the process and circuit levels. True single-chip operation with live-at-power-up behavior removes the need for external configuration devices, a significant reliability advantage over SRAM-based commercial FPGAs in spaceflight, where configuration volatility and SEFI events are concerns. Typical applications include satellite payload data processing, spacecraft attitude control and telemetry interfaces, launch vehicle avionics, and spaceborne instruments, where low power, single-chip integration, and SEU robustness are decisive selection criteria. A key design consideration: the ceramic CCGA-624 package demands careful PCB pad geometry and reflow profiles due to the column-grid construction; mechanical stress on the ceramic body during handling and mounting must be minimized to prevent column cracking. This page synthesizes distributor sourcing data, drop-in family alternatives, and practical spaceflight design notes not consolidated in the manufacturer datasheet.
RTAX250SL-1CG624V - 250k-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology RTAX250SL-1CG624V is a radiation-tolerant, 250,000-gate CMOS FPGA from the RTAX-S/SL family, offering 2816 CLBs with 4224 logic cells, 248 user inputs and 248 user outputs, and a 1.425V to 1.575V core supply, housed in a 624-pin ceramic column grid array (CGA) package. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive and operate reliably in space-flight radiation environments, where energetic particles can upset configuration memory and logic states. Unlike commercial FPGAs, rad-tolerant devices combine radiation-hardened or radiation-by-design silicon with triple-module-redundancy design flows. The RTAX-S/SL family from Actel (now Microchip, formerly Microsemi) sits within the broader space-grade FPGA hierarchy that also includes reprogrammable flash-based alternatives. Key features of the RTAX250SL include live-at-power-up operation, since its antifuse configuration is permanent and requires no external boot device; a true single-chip form factor that simplifies board design; and low static power consumption, both critical for satellite payload and avionics power budgets. The SL suffix denotes the enhanced SEU-optimized fabric generation within the RTAX-S/SL platform. Architecturally, the device uses a Sea-of-Modules fabric built from combinational and sequential logic cells, supported by embedded SRAM blocks and an abundant register-rich structure suited to pipelined datapath and controller functions. Speed grade -1 with the C commercial-range designation and V version code defines timing and screening per the ordering code in the RTAX-S/SL datasheet. Typical applications include satellite payload processing, telemetry and telecommand interfaces, spacecraft bus control, and radiation-tolerant glue logic replacing multiple ASIC/MIL-STD functions in space-flight systems. Designers should complete place-and-route timing closure with Microchip Libero IDE and apply the recommended SEU mitigation design flow, including triple-module redundancy for critical registers. This page adds value beyond the manufacturer datasheet by consolidating distributor availability signals, same-family drop-in variants, application guidance, and FAQ content for space-flight sourcing teams.
RTAX250SL-1CQ208V - 250k-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX250SL-1CQ208V is a radiation-tolerant, antifuse-based FPGA offering 250,000 equivalent system gates and 4,224 logic cells (2,816 combinational logic blocks) in a 208-pin ceramic CQFP package, qualified for operation from -55C to +125C with a nominal 1.5V core supply. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the ionizing radiation and heavy-ion flux encountered in space flight. Within the power-management hierarchy of spacecraft electronics, the RTAX-S/SL family sits at the payload-processing tier: it implements mission logic, telemetry formatting, and protocol bridges directly in silicon. The antifuse programmable interconnect is one-time programmable, so the configuration is inherently immune to configuration-memory upset, a key differentiator against SRAM-based space FPGAs. Key features include live-at-power-up operation (the device is functional immediately after power application, eliminating external configuration circuitry), a true single-chip form factor that reduces board area and mass, and low static power consumption critical for orbital missions. The 1-speed grade supports clocking in the hundreds of megahertz class per family data, and the SL variant provides enhanced low-power characteristics versus the base RTAX-S. Architecturally, the RTAX250SL combines a Sea-of-Modules core with embedded SRAM blocks and registered IO cells, supporting synchronous and asynchronous interfaces common in spacecraft avionics. The CQFP-208 ceramic hermetic package provides latch-up resistance and thermal cycling durability for launch environments. Typical applications include satellite payload data processing, spacecraft attitude-control and telemetry interfaces, radiation-tolerant glue logic replacing multiple ASIC functions, and deployed-space science instruments. Design consideration: because antifuse devices are one-time programmable, budget for prototype units (RTAX250SL-1CQ208PROTO shares flight timing) before committing flight parts. This page synthesizes distributor availability, drop-in family alternatives, and design guidance not consolidated in the manufacturer datasheet.
RTAX250SL-CG624V - 250k-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX250SL-CG624V is a radiation-tolerant FPGA offering 250,000 equivalent system gates with 2816 CLBs, 4224 logic cells, and 248 inputs and 248 outputs, housed in a 624-pin ceramic column grid array (CG624) package and operating from a 1.425V to 1.575V core supply. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the ionizing radiation environment of space flight, where total ionizing dose (TID), single-event latchup (SEL), and single-event upset (SEU) would degrade or destroy commercial devices. Within the power-management hierarchy of a spacecraft avionics system, the RTAX250SL sits at the top of Microchip's RTAX-S/SL family of antifuse-based, live-at-power-up FPGAs designed for satellite payloads, buses, and flight control electronics. Key features include the SEU-resistant D flip-flops of the RTAX-SL architecture, embedded SRAM blocks with built-in FIFO control logic, segmentable clock resources, chip-wide highway routing, and carry-chain logic. The antifuse programmable interconnect is one-time programmable and requires no configuration boot device, delivering true single-chip operation and live-at-power-up behavior that is critical for spacecraft power-on fault recovery. Technically, the device is fabricated in a CMOS process derived from Microsemi's commercial Accelerator (ProASIC3-class) devices, with enhanced layout and process hardening for the space radiation environment. Densities across the RTAX-S/SL family reach up to four million equivalent system gates, and the CG624 ceramic package provides hermeticity for vacuum operation and outgassing control. Typical applications include satellite payload data processing, spacecraft bus controllers, telemetry and telecommand interfaces, sensor interface FPGA gluing logic, and reconfigurable computing modules on LEO, MEO, and GEO missions. Design consideration: because the part is one-time programmable, complete bitstream verification through Libero SoC simulation and the Synplify flow is essential before committing flight hardware. This page synthesizes distributor listings, drop-in family alternatives, and practical space-design notes not consolidated in the manufacturer datasheet.