A54SX32A-1TQG100I - SX-A FPGA 48K Gates TQFP-100 | Microchip
MPN: A54SX32A-1TQG100I ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $62.5 | $62.50 |
| 10 | $56.3 | $563.00 |
| 100 | $49.2 | $4,920.00 |
| 500 | $43.8 | $21,900.00 |
| 1,000 | $38.5 | $38,500.00 |
Drop-in alternatives for A54SX32A-1TQG100I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
A54SX32A-TQG100I
✅ Drop-In📋 Reference alternative (not in catalog)
A54SX32A-1TQG100
✅ Drop-In✓ In Stock
$21.75 / Unit
View Datasheet →A54SX32A-2TQG100I
✅ Drop-In✓ In Stock
$22.8 / Unit
View Datasheet →A54SX32A-TQG100M
✅ Drop-In✓ In Stock
$50.87 / Unit
View Datasheet →A54SX32A-TQG100A
✅ Drop-In✓ In Stock
$235 / Unit
View Datasheet →A54SX32A-1TQG100M
✅ Drop-In✓ In Stock
$47.95 / Unit
View Datasheet →A54SX32A-1TQG100I Maximum Ratings & Electrical Characteristics
| Family | SX-A |
| System Gates | 48000 |
| Typical Gates | 32000 |
| Logic Modules | 1800 |
| Number of I/O | 81 |
| Max Toggle Frequency | 278 MHz |
| Speed Grade | -1 |
| Core Supply Voltage | 2.5 V |
| Process Technology | 0.25 um |
| Programming Technology | Antifuse (one-time programmable) |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 100-TQFP (TQG100) |
| Mounting Type | Surface Mount |
| Packaging | Tray |
| Lead Free | Yes (G suffix) |
A54SX32A-1TQG100I 100-tqfp (tqg100) Pin Configuration Guide
Complete pinout information for A54SX32A-1TQG100I (100-tqfp (tqg100) 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 A54SX32A-1TQG100I.
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
A54SX32A-1TQG100I is suitable for 6 applications: Industrial Control and Automation, Communications and Networking Line Cards, Aerospace and Defense Systems, Glue Logic Integration and BOM Reduction, Test and Measurement Instrumentation, Legacy Design Resupply and Obsolescence Bridging.
Industrial Control and Automation
The A54SX32A-1TQG100I fits industrial control and factory automation because its -40C to +85C industrial rating covers harsh cabinet environments, while 81 user I/Os absorb parallel sensor, encoder, and actuator interfaces on a single chip. In a typical PLC I/O card, the FPGA sits between backplane connectors and a microprocessor, implementing glue logic, address decoding, and handshaking that would otherwise need dozens of 74-series devices. The antifuse fabric powers up instantly in the correct configuration - there is no boot delay that could cause actuator glitches at cold start. The 278 MHz toggle capability of the -1 grade comfortably handles quadrature decoding at several MHz. Designers should budget the 2.5V core rail alongside 3.3V I/O supplies and verify timing with the -1 speed-grade library in Libero.
Recommended
Communications and Networking Line Cards
In telecom and datacom line cards, the A54SX32A-1TQG100I implements framing, multiplexing, and protocol glue logic between PHY devices and backplane processors. The -1 speed grade's 278 MHz maximum toggle frequency supports T1/E1 and legacy serial framer interfaces with margin, and 48K system gates provide enough capacity for channel aggregation logic across 1,800 logic modules. Antifuse one-time programming is an advantage here: once validated, the configuration cannot be corrupted by single-event soft errors in configuration memory, improving link uptime, and no configuration PROM occupies board space on dense cards. The 100-pin TQFP offers a practical 0.5 mm pitch for controlled-impedance routing of high-speed signals. Validate I/O switching characteristics against the SX-A datasheet AC tables for your specific I/O standard.
Recommended
Aerospace and Defense Systems
Antifuse FPGAs have a long heritage in aerospace and defense, and the A54SX32A-1TQG100I inherits that lineage through Microsemi (now Microchip). The one-time-programmable fabric cannot be read back, giving inherent design-security against configuration extraction, and it contains no configuration SRAM that upsets could corrupt - valuable in high-reliability environments. The M-suffix variants in the same package family (A54SX32A-TQG100M, A54SX32A-1TQG100M) provide extended screening for such programs. Typical uses include sensor-interface preprocessing, bus bridging (MIL-STD-style parallel interfaces), and redundancy/voting logic in avionics black boxes. For new defense designs, confirm with Microchip which SX-A screening flows remain orderable, and allocate schedule margin since these are legacy devices produced on mature 0.25 um technology with constrained fab allocation.
Recommended
Glue Logic Integration and BOM Reduction
A core SX-A value proposition is replacing multiple discrete logic devices with one low-cost single-chip solution. Designs consolidating address decoders, bus transceivers, state machines, and random combinational logic into the A54SX32A-1TQG100I routinely eliminate 20-50 SSI/MSI packages, cutting board area, assembly cost, and failure points. With 32,000 typical gates and 81 I/Os, one TQFP-100 device absorbs what previously required several PLDs plus TTL, and the 278 MHz -1 grade leaves generous timing margin over legacy 5V-era logic speeds. Because the part is one-time programmable, prototype iterations consume a new unit per change, so consolidate design changes before each programming run. XAIPART stocks the full A54SX32A package family so you can move between TQFP-100 and larger-pin alternatives as I/O needs grow.
Recommended
Test and Measurement Instrumentation
Bench instruments and rack modules benefit from the A54SX32A-1TQG100I's combination of deterministic power-up and flexible I/O. In a data-acquisition front end, the FPGA performs trigger logic, counter/timer functions, and parallel-to-serial packing between ADCs and a controller; the -1 grade's 278 MHz toggle rate supports precise time-interval measurement resolution in the tens-of-nanoseconds regime and beyond with carry-chain techniques. The antifuse fabric contributes no configuration-readout jitter or boot sequence, so measurement chains start in a known state immediately at power-on - important for rack systems that must be measurement-ready instantly. 81 user I/Os interface ADC buses, front-panel controls, and backplane links. Designers should place the 2.5V core regulator close to the device and follow the SX-A datasheet power-decoupling guidance for low-noise analog proximity.
Recommended
Legacy Design Resupply and Obsolescence Bridging
Thousands of fielded boards designed between 1998 and 2010 specify the A54SX32A family, and the A54SX32A-1TQG100I remains the standard resupply choice for maintenance, repair, and overhaul (MRO) programs. The part is still active at Microchip, and Octopart tracks 6 distributors, but allocation can tighten; securing buffer stock through XAIPART protects production continuity. Because the antifuse die and package have not changed, a newly purchased unit programmed with the archived bitstream from the original design database is a true form-fit-function replacement. MRO teams should archive the original Libero/Designer project files and programming files alongside the BOM, and qualify the G (lead-free) suffix version for any board revised after RoHS deadlines. Where exact speed-grade stock is scarce, the pin-compatible A54SX32A-TQG100I is the verified cross-reference fallback.
Recommended
Recommended Products Summary
Engineering reference data for A54SX32A-1TQG100I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX32A-TQG100I | A54SX32A-1TQG100 | A54SX32A-2TQG100I | A54SX32A-TQG100M |
|---|---|---|---|---|---|
| Package | 100-TQFP (TQG100) | 100-TQFP (TQG100) - same | 100-TQFP (TQG100) - same | 100-TQFP (TQG100) - same | 100-TQFP (TQG100) - same |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 48000 | 48000 | 48000 | 48000 | 48000 |
| User I/O | 81 | 81 | 81 | 81 | 81 |
| Speed Grade / Max Toggle | -1 / 278 MHz | Standard / ~238 MHz | -1 / 278 MHz | -2 / slower than -1 | Standard / ~238 MHz |
| Core Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | [DATA_NEEDED] | -40C to +85C | Extended (M screening) |
| Lead-Free Plating | Yes (G suffix) | Yes (G) | No (non-G) | Yes (G) | Yes (G) |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
Key Differentiators
- Fastest -1 speed grade in the TQFP-100 A54SX32A lineup (vs A54SX32A-TQG100I)
- Lead-free G-suffix plating for RoHS-era builds (vs A54SX32A-1TQG100)
- Instant power-up with no external configuration memory (vs SRAM FPGAs of similar gate count)
Design Notes
The A54SX32A-1TQG100I runs a 2.5V core; I/O banks support lower-voltage standards per the SX-A datasheet. Provide independent, well-decoupled rails: place 0.1uF ceramic capacitors at each VCC/VCCA pin pair plus bulk 10uF near the device. Estimated: static antifuse power is low (no configuration SRAM leakage path like SRAM FPGAs), but dynamic power scales with toggle rate - use the Microchip SX-A power calculator with your post-place-and-route netlist rather than assuming worst-case values. Ensure the 2.5V regulator can supply programming current margin during antifuse burn-in if in-system programming is used.
This device is one-time programmable: there is no reflash. Every design change requires a fresh programmed unit, so complete full functional verification and static timing analysis (with the -1 speed-grade library at worst-case industrial corners) before committing to a programming run. A second common pitfall is mixing speed grades in one BOM - the A54SX32A-TQG100I (standard, ~238 MHz) is not timing-equivalent to the -1 (278 MHz); substituting silently can break marginal paths. Verify the orderable suffix (I/M/A temperature grade and G plating) against your program requirements before purchase.
The 100-pin TQFP has 0.5 mm lead pitch with gull-wing leads. Use 0.2 mm stencil aperture reduction on lead tips to prevent bridging, and add via-stitched thermal relief per the SX-A datasheet thermal characteristics table for the TQG100 package. Keep the dedicated programming/test pins routed to a header or test point because antifuse devices cannot be reprogrammed in-circuit after failure analysis. Decouple every VCC pin individually - the TQFP power pins are distributed around the ring, and sharing a single decoupling network degrades high-frequency supply impedance.
Compliance Information
The G suffix in A54SX32A-1TQG100I indicates lead-free plating per distributor listings (PCB Electronics: LEAD FREE). Formal RoHS/REACH certificates must be obtained from Microchip; not confirmed in provided web data.
