A54SX16A-PQ208I

Overview

The A54SX16A-PQ208I is a Field Programmable Gate Array from the Microchip Actel SX-A family, featuring 24,000 system gates and 175 user-programmable I/O pins. It utilizes 0.22 μm / 0.25 μm CMOS antifuse technology to provide nonvolatile configuration without external memory. The device supports mixed-voltage operation at 2.5 V, 3.3 V, and 5 V with 5 V input tolerance. It operates within an industrial temperature range of -40°C to +85°C and achieves up to 250 MHz system performance. The component is housed in a 208-pin Plastic Quad Flat Pack (PQFP) package.

Feature Summary

• Nonvolatile single-chip solution using metal-to-metal programmable antifuse interconnects
• Support for 2.5 V, 3.3 V, and 5 V mixed-voltage I/O standards including PCI and TTL
• Hot-swap compliant I/Os allowing safe insertion into active systems
• Configurable weak-resistor pull-up or pull-down for deterministic power-up states

Applications

• Industrial control systems requiring hot-swappable logic
• Mixed-voltage interface bridges between 3.3 V and 5 V components
• Secure embedded designs utilizing FuseLock anti-tamper features

Procurement Notes

Verify the specific ordering suffix 'I' confirms the Industrial temperature grade (-40°C to +85°C). Confirm the 'PQ' suffix indicates the 208-pin Plastic Quad Flat Pack package. Check current availability status as older antifuse families may have limited production runs or discontinuation notices.

Selection Notes

Select this part when a nonvolatile FPGA with high-speed I/O mixing is required. Ensure the design fits within the 24,000 system gate capacity and 175 available I/O constraints. Verify that the 208-pin PQFP footprint matches the PCB layout requirements compared to BGA alternatives.

Part Context

This component belongs to the Actel SX-A series, which uses antifuse technology for permanent programming. Unlike volatile FPGAs, it does not require a configuration PROM. The SX-A architecture emphasizes deterministic timing through dedicated routing resources like DirectConnect and FastConnect.

Replacement Considerations

Direct pin-compatible replacements are generally unavailable due to the proprietary antifuse architecture. Consider migrating to modern Microchip PolarFire or IGLOO2 families, though these require significant schematic and software redesign.