A54SX32-BG329I - 48K Gate SX FPGA 329-BGA | Microchip
MPN: A54SX32-BG329I ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $730.67 | $730.67 |
| 10 | $680 | $6,800.00 |
| 100 | $620 | $62,000.00 |
| 500 | $590 | $295,000.00 |
| 1,000 | $560 | $560,000.00 |
Drop-in alternatives for A54SX32-BG329I — 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:
A54SX32-BGG329I
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →A54SX32-BG329
✅ Drop-In📋 Reference alternative (not in catalog)
A54SX32A-2BGG329I
✅ Drop-In📋 Reference alternative (not in catalog)
A54SX32-1BGG329I
✅ Drop-In✓ In Stock
$47.8 / Unit
View Datasheet →A54SX32-2BGG329I
✅ Drop-In✓ In Stock
$88.9 / Unit
View Datasheet →A54SX32-2BGG329
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →A54SX32-BG329I Maximum Ratings & Electrical Characteristics
| Family | Actel SX (AXcelerator predecessor SX series) |
| System Gates | 48000 gates (48K) |
| Logic Cells | 1800 cells |
| Combinatorial Logic Blocks (CLBs) | 2880 |
| User I/O | 249 |
| Maximum System Frequency | 240 MHz |
| Process Technology | 0.35 um CMOS |
| Supply Voltage | 3.3 V / 5 V |
| Programming Technology | Antifuse (one-time programmable, non-volatile) |
| Package | 329-BBGA, 1.27 mm ball pitch |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS compliant (per FindIC listing for family members) |
| Configuration Memory | Non-volatile antifuse (no external configuration device required) |
A54SX32-BG329I 329-bbga, 1.27 mm ball pitch Pin Configuration Guide
Complete pinout information for A54SX32-BG329I (329-bbga, 1.27 mm ball pitch 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 A54SX32-BG329I.
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
A54SX32-BG329I is suitable for 6 applications: Aerospace and Defense Control Logic, Industrial Automation Controllers, Legacy Communication Bridge Logic, Avionics Retrofit and Obsolescence Management, Test and Measurement Instrument Logic, Secure and Anti-Tamper System Logic.
Aerospace and Defense Control Logic
The A54SX32-BG329I fits aerospace and defense control logic because its antifuse configuration is one-time-programmable and non-volatile: there is no configuration bitstream to upset in radiation environments, no boot time on power-up, and no external configuration ROM that can fail at temperature extremes. The 48K gate / 1800 cell capacity integrates sequencers, bus interfaces, and watchdog logic that previously required multiple PAL/GAL devices, while the 249 user I/O supports wide 16/32-bit military data buses. Circuit-wise, the device typically sits between a processor and backplane drivers, clocked at tens of MHz well within its ~240 MHz architecture capability. The trade-off is one-time programmability - flying programs must bank validated fusemaps and spare programmed devices, since in-field reconfiguration is impossible.
Recommended
Industrial Automation Controllers
In industrial automation, the A54SX32-BG329I integrates PLC I/O scanning logic, encoder interfaces, and interlock sequencing with instant-on operation: because antifuse configuration is hard-wired, the FPGA is functional within microseconds of power application - valuable for safety interlocks that must be active before the host processor boots. The 3.3V/5V I/O support lets it directly interface with legacy 5V TTL industrial signals, and the 249 I/O count covers dense terminal I/O in the 329-ball BGA with 1.27 mm pitch that survives vibration better than fine-pitch QFP leads. Designers should budget for the fixed-logic workflow: any logic change requires reprogramming a new physical device, so maintain programmed spares. Its ~240 MHz capability comfortably handles multi-channel PWM and quadrature decoding tasks.
Recommended
Legacy Communication Bridge Logic
The A54SX32-BG329I serves as glueless bridge logic in legacy communication equipment, translating between protocol interfaces such as parallel backplane buses and serial links. The sea-of-modules architecture keeps routing delays short and consistent, so wide parallel buses at moderate clock rates meet timing without hand-tuned placement - a practical advantage for sustaining designs originally captured in the Actel Designer flow. Its 5V-tolerant I/O directly connects to older line-card circuitry without level shifters, reducing BOM count, and the non-volatile antifuse configuration means cards power up ready on a live backplane with no configuration window. The key consideration is end-of-life planning: pair this device in sustaining programs with a documented migration path to the SX-A or ProASIC families if new volumes are needed.
Recommended
Avionics Retrofit and Obsolescence Management
For avionics retrofit programs, the A54SX32-BG329I is a direct replacement source for obsolete Actel SX32 devices already designed into flight hardware. Because the same die and 329-ball BGA footprint are maintained across the SX family (BG329 and green BGG329 suffixes), retrofit boards can keep the original land pattern and swap in newly programmed devices after re-verifying lot data. The 1800-cell capacity matches the historical design capture, and Microchip's Libero/Designer toolchain still supports SX place-and-route and fusemap generation, so original HDL or schematic sources can be recompiled if needed. Program managers should qualify the RoHS BGG variant when environmental compliance is required, and stock factory-fresh devices since programming yield on antifuse parts is not 100 percent.
Recommended
Test and Measurement Instrument Logic
In test and measurement instruments, the A54SX32-BG329I implements timing generators, trigger logic, and counter/timer arrays where deterministic, repeatable timing matters more than reconfigurability. The antifuse architecture delivers fixed interconnect delays run-to-run and unit-to-unit, which simplifies instrument calibration: a trigger path characterized on one unit behaves identically on the next, unlike SRAM FPGAs whose routing varies only at design time but whose configuration integrity must be checked at boot. With 249 user I/O in the 329-ball BGA, front-end channel banks, calibration relays, and display interfaces can all be absorbed into one device. Designers get ~240 MHz-class internal timing, sufficient for sub-10 ns trigger resolution in most benchtop instruments.
Recommended
Secure and Anti-Tamper System Logic
The A54SX32-BG329I is well suited to secure and anti-tamper system logic because antifuse configuration cannot be read back: once programmed, the fusemap is buried in the die and there is no bitstream file on the board to extract, unlike SRAM FPGAs that load configuration from visible flash at every boot. Security engineers use SX-class devices for key storage glue logic, secure-boot gating, and zeroization control in defense platforms. The 48K gate capacity integrates state machines and comparison logic around a crypto processor, and 5V-tolerant I/O interfaces with tamper-switch meshes. The trade-off is design inflexibility - security patches require new physical devices, so pair deployment with a controlled stock of pre-programmed spares under configuration management.
Recommended
Recommended Products Summary
Engineering reference data for A54SX32-BG329I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX32-BGG329I | A54SX32-BG329 | A54SX32A-2BGG329I | A54SX32-1BGG329I |
|---|---|---|---|---|---|
| Package | 329-BBGA, 1.27 mm pitch | 329-BBGA (green BGG) - same footprint | 329-BBGA - same footprint | PBGA329, 1.27 mm pitch - same footprint | 329-BBGA (green BGG) - same footprint |
| Brand | Microchip Technology (Microsemi/Actel) | Microchip Technology | Microsemi Corporation (legacy) | Microsemi Corporation (legacy) | Microchip Technology |
| System Gates | 48 K | 48 K | 48 K | 48 K (SX-A, 2880 CLBs) | 48 K |
| User I/O | 249 | 249 | 249 | 249 | 249 |
| Speed Grade / Max Frequency | Standard (~240 MHz family rating) | Standard (~240 MHz) | Standard (~240 MHz) | -2 (~313 MHz) | -1 (slower bin) |
| Temperature Grade | Industrial (I suffix) | Industrial (I suffix) | Commercial/standard | Industrial (I suffix) | Industrial (I suffix) |
| RoHS / Package Finish | Standard BG (legacy, verify certificate) | RoHS compliant green BGG | Standard BG (legacy) | RoHS compliant green BGG | RoHS compliant green BGG |
| Reference Unit Price (USD) | $730.67 (as of 2026-09-03, Heisener) | [DATA_NEEDED] | $547.89 (as of 2026-09-03, Heisener) | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- RoHS-compliant drop-in option with identical footprint (vs A54SX32-BGG329I)
- Faster speed-grade upgrade path on the same PCB (vs A54SX32A-2BGG329I)
- Cost saving for temperature-controlled environments (vs A54SX32-BG329)
- Non-volatile instant-on operation vs SRAM FPGAs (vs Xilinx XC4000-class functional equivalents)
Design Notes
Antifuse devices are one-time programmable: a logic error, timing violation, or programming failure consumes the physical part permanently. Before committing production devices, complete static timing analysis in Microchip Designer, simulate the full testbench, and program one engineering lot first. Reserve approximately 10-15% spare programmed devices under configuration management - antifuse programming yield is not 100% and in-field rework is impossible.
The 329-ball BGA with 1.27 mm pitch routes cleanly on standard PCB technology: use via-in-pad or dog-bone fanout with 0.3 mm drill vias, and escape traces at 4-5 mil width/spacing to break out the perimeter two to three ball rows. Provide dedicated power and ground ball connections per the datasheet ball map - do not share a single via pair across multiple VCC/GND balls, as the SX I/O banks switch simultaneously and localized IR drop shows up as timing jitter.
The SX family operates from a 3.3 V supply with 5 V-tolerant I/O capability per family data. Estimated: decouple each VCC ball group with at least 0.1 uF ceramic within 3 mm of the ball, plus 10-47 uF bulk per bank. Because the antifuse FPGA draws no configuration current at power-up (unlike SRAM FPGAs), supply sequencing requirements are relaxed, but verify inrush from I/O charge on 249 pins against your regulator soft-start rating.
Compliance Information
RoHS compliance for the BG (non-green) suffix is not confirmed in retrieved distributor data; FindIC family data marks the BGG green variants as RoHS compliant. Obtain a certificate of conformance from the supplier for the exact suffix ordered.
