RTAX2000S-CQ256V - 2M-Gate Rad-Tolerant FPGA, CQFP-256 | Microchip
MPN: RTAX2000S-CQ256V ✓ Active| Qty | Unit Price | Extended |
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Drop-in alternatives for RTAX2000S-CQ256V — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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RTAX2000SL-CQ256V
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View Datasheet →RTAX2000SL-1CQ256V
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View Datasheet →RTAX2000S-1CQ256PROTO
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View Datasheet →RTAX2000SL-1CQ256PROTO
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View Datasheet →RTAX2000S-CQ256V Maximum Ratings & Electrical Characteristics
| System Gates | 2,000,000 gates |
| Logic Cells | 32,256 |
| Configurable Logic Blocks (CLBs) | 21,504 |
| Technology | CMOS antifuse |
| Programming Type | One-Time Programmable (OTP) |
| Radiation Tolerance | Radiation-tolerant (RTAX-S family, space-flight grade) |
| Configuration | Live at power-up, non-volatile, single-chip |
| Package | CQFP-256 (ceramic quad flat, JESD-30: S-CQFP-F256) |
| Mounting Type | Surface Mount |
RTAX2000S-CQ256V cqfp-256 (ceramic quad flat, jesd-30: s-cqfp-f256) Pin Configuration Guide
Complete pinout information for RTAX2000S-CQ256V (cqfp-256 (ceramic quad flat, jesd-30: s-cqfp-f256) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for RTAX2000S-CQ256V.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
RTAX2000S-CQ256V is suitable for 6 applications: Satellite Payload Data Processing, Spacecraft Command and Data Handling (C&DH), Telemetry and Telecommand Interfaces, Scientific Instrument Control Logic, Radiation-Hardened Sensor Front-End Acquisition, Launch Vehicle and Avionics Electronics.
Satellite Payload Data Processing
The RTAX2000S-CQ256V fits satellite payload processing because its 2,000,000 system gates and 32,256 logic cells absorb high-throughput data formatting, compression preprocessing, and packetization that would otherwise need multiple ASICs. Its antifuse configuration is live at power-up with zero configuration time, so payload electronics begin operating immediately after spacecraft power application - valuable during launch-sequence and deployment windows. Because the fabric carries no SRAM configuration memory, there is no configuration upset failure mode in the radiation environment, simplifying single-event-effect analysis. Place the FPGA on the payload data path between sensor digitizers and downlink formatters, using the CQFP-256 ceramic hermetic package for thermal and vacuum reliability. The trade-off versus reprogrammable fabrics is one-time programming: all payload logic must be frozen and fully verified before flight hardware commitment.
Recommended
Spacecraft Command and Data Handling (C&DH)
In spacecraft avionics and C&DH units, the RTAX2000S-CQ256V implements telemetry formatting, telecommand decoding, memory interfaces, and board-level glue logic in a true single chip. Its 21,504 CLBs give enough fabric to consolidate functions that previously required multiple devices, reducing board count, mass, and connector count - direct wins for spacecraft cost and launch mass budgets. Live-at-power-up antifuse operation means the C&DH FPGA is functional the instant the power bus is enabled, with no boot loader or configuration store to fail in orbit. The ceramic CQFP-256 package provides hermetic sealing suited to vacuum operation and standard ceramic assembly flows used in high-reliability aerospace manufacturing. Designers should budget one-time-programmability into the verification schedule: use Aldec RTAX prototyping adaptors based on ProASIC3E flash fabric to iterate firmware before programming flight silicon.
Recommended
Telemetry and Telecommand Interfaces
Telemetry/telecommand chains benefit from the RTAX2000S-CQ256V's deterministic, configuration-upset-free operation: telemetry framing, convolutional or RS-adjacent formatting stages, and time-tag counters run continuously without a configuration-memory refresh or scrubbing controller, which SRAM-based space FPGAs typically require. The 2M-gate density accommodates multiple independent telemetry channels plus housekeeping aggregation in one device, while 32,256 logic cells leave margin for on-orbit-discovered fix reserves at design time - important because antifuse devices cannot be reconfigured in flight. The CQFP-256 ceramic package suits the moderate I/O count of CCSDS-style board interfaces and supports standard socketless surface-mount assembly. Note that RTAX-S/SL devices are not pin compatible with RTAX2000D/DL parts in some package types, so lock the exact ordering code early in the program.
Recommended
Scientific Instrument Control Logic
Orbital scientific instruments - imagers, spectrometers, particle detectors - use the RTAX2000S-CQ256V as the central sequencer and acquisition controller. Its 2,000,000 gates implement detector timing generators, high-speed acquisition FIFOs, and instrument state machines with deterministic timing that SRAM fabrics cannot guarantee without scrubbing overhead. Live-at-power-up behavior ensures the instrument is ready when experiment windows open, critical for time-constrained observation opportunities. The antifuse fabric's immunity to configuration bit flips removes a whole class of single-event-functional interrupts from the instrument's fault tree, improving data-integrity confidence for one-shot science campaigns. The ceramic CQFP-256 hermetic package tolerates the thermal cycling of low-Earth-orbit eclipse seasons. Because the device is OTP, instrument teams should complete full FPGA verification and Aldec ProASIC3E-based prototyping before committing flight silicon.
Recommended
Radiation-Hardened Sensor Front-End Acquisition
The RTAX2000S-CQ256V serves as the acquisition and preprocessing engine between space-grade ADCs or digitizer front ends and downstream payload processors. With 32,256 logic cells, it implements deserialization, digital filtering, threshold detection, and lossless data reduction near the sensor, cutting downlink bandwidth requirements. Low power consumption - a defining RTAX-S family trait per Microchip - matters because sensor electronics frequently share constrained spacecraft power budgets with thermally isolated optics. Single-chip operation eliminates configuration PROM read traffic that would otherwise inject switching noise near sensitive analog front ends, an often-overlooked system benefit of antifuse FPGA architecture. The CQFP-256 package's perimeter leads simplify reliable solder inspection under aerospace workmanship standards. Size I/O with the family datasheet package table and verify signal-integrity constraints for high-rate LVDS-class sensor links.
Recommended
Launch Vehicle and Avionics Electronics
Avionics boards in launch vehicles and reentry systems leverage the RTAX2000S-CQ256V where flight time is short but reliability must be absolute: sequencing logic, red-line monitoring, and bus interfaces. The antifuse fabric is live at power-up - there is no boot sequence that could be disturbed by launch vibration-induced power transients - and one-time programming eliminates configuration-storage failure modes during the high-shock mission phase. The 2M-gate density consolidates dual-string logic onto one device with room for voting and redundancy management schemes. The ceramic CQFP-256 package withstands the mechanical environments of launch when properly staked and underfilled per aerospace assembly practice. For these programs, procurement should specify the appropriate screening suffix and verify the exact ordering code with Microchip, since speed grade and screening variants (standard versus PROTO) share one datasheet ordering table.
Recommended
Recommended Products Summary
Engineering reference data for RTAX2000S-CQ256V — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX2000SL-CQ256V | RTAX2000SL-1CQ256V | RTAX2000S-1CQ256PROTO | RTAX2000SL-1CQ256PROTO |
|---|---|---|---|---|---|
| Package | CQFP-256 (S-CQFP-F256) | CQFP-256 - same | CQFP-256 - same | CQFP-256 - same | CQFP-256 - same |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 2,000,000 | 2,000,000 | 2,000,000 | 2,000,000 | 2,000,000 |
| Logic Cells | 32,256 | 32,256 | 32,256 | 32,256 | 32,256 |
| Power Variant | Standard (S) | Low-power (SL) | Low-power (SL) | Standard (S) | Low-power (SL) |
| Speed Grade | Standard grade ('V' suffix) | Standard grade ('V' suffix) | -1 (faster) | -1 (faster) | -1 (faster) |
| Screening Level | Flight grade | Flight grade | Flight grade | PROTO (engineering builds) | PROTO (engineering builds) |
| Programming Technology | CMOS antifuse, OTP, live at power-up | CMOS antifuse, OTP | CMOS antifuse, OTP | CMOS antifuse, OTP | CMOS antifuse, OTP |
Key Differentiators
- Lowest static power option in same footprint (vs RTAX2000SL-CQ256V)
- Configuration-upset-immune antifuse fabric (vs SRAM-based space FPGAs)
- PROTO screening path available (vs RTAX2000S-1CQ256PROTO)
Design Notes
RTAX2000S devices are one-time programmable: once the antifuses are blown, the design cannot be changed. Freeze the RTL, complete timing closure in Libero SoC against the CQ256 speed files, and run functional prototyping on the Aldec RTAX prototyping adaptor (flash-based ProASIC3E fabric) before submitting flight silicon. Also note per the Microsemi RTAX-S/SL datasheet that RTAX2000S/SL and RTAX2000D/DL are NOT pin compatible in the CQ352 package type - never assume family cross-compatibility without a pin audit.
The CQFP-256 ceramic package has perimeter leads on all four sides and requires careful footprint land-pattern compliance to the manufacturer-recommended ceramic land pattern. Plan for corner lead escape routing and equal-length considerations for high-speed bus groups. Ceramic CQFP packages tolerate reflow but support aerospace soldering workmanship practices including X-ray or visual inspection of all 256 joints; avoid wave-soldering approaches typical of plastic packages.
The RTAX-S family is characterized by low power consumption, and the SL variant reduces static power further than the standard S variant. For battery- or eclipse-constrained missions, estimate power in Libero SoC at your actual toggle rates rather than relying on worst-case tables. Decouple core and I/O supplies per the datasheet recommendation with low-ESR ceramics at each supply pin pair; the CQFP-256 perimeter pin arrangement makes a continuous supply ring on adjacent inner layers an effective decoupling topology.
Compliance Information
Space-grade ceramic CQFP hermetic package; AEC-Q100 automotive qualification is not applicable to this space-flight product line. Compliance declarations must be requested from Microchip for the specific ordering code.
