A54SX16A-FPQ208

Overview

The A54SX16A-FPQ208 is a nonvolatile Field Programmable Gate Array from the SX-A family, fabricated using 0.22 μm / 0.25 μm CMOS antifuse technology. It provides 24,000 system gates and supports up to 175 user-programmable I/O pins within a 208-pin Plastic Quad Flat Pack (PQFP) package. The device operates at standard speed grades with an internal performance capability of 350 MHz and a system performance of 250 MHz. It features mixed-voltage operation supporting 2.5 V, 3.3 V, and 5 V I/Os with 5 V input tolerance. The architecture includes 1,452 combinatorial cells and dedicated flip-flops for deterministic logic implementation.

Feature Summary

• Nonvolatile single-chip solution utilizing metal-to-metal programmable antifuse interconnect elements for permanent configuration without external memory.
• Hot-swap compliant I/Os allowing insertion into electrically active systems without degrading host reliability or requiring specific power sequencing.
• Supports IEEE 1149.1 Boundary-Scan Testing with dedicated and flexible JTAG modes for superior diagnostic and in-system verification capabilities.
• Configurable weak-resistor pull-up or pull-down for I/Os at power-up, enabling deterministic initialization states.

Applications

• High-performance digital logic integration replacing complex CPLDs or gate arrays
• PCI-compliant interface designs operating at 66 MHz
• Systems requiring hot-swappable hardware insertion and removal

Procurement Notes

Verify the exact ordering suffix against the manufacturer's current datasheet to confirm package type and temperature grade. The 'F' designation indicates a slower speed grade relative to standard options. Confirm RoHS compliance status as packaging suffixes may vary. Ensure the supplier provides valid traceability documentation for this discontinued component series.

Selection Notes

Select this device when nonvolatile configuration is required to eliminate external boot memory components. Consider the FPQ208 package only if the slower speed grade meets timing constraints. Verify that the 175 available I/Os satisfy pin count requirements. Evaluate thermal dissipation characteristics for the PQFP package under maximum load conditions.

Part Context

This component belongs to the Actel SX-A FPGA family, which was acquired by Microchip Technology. The SX-A line utilizes antifuse technology rather than SRAM-based configuration, offering inherent security against reverse engineering. This specific part represents a mid-range capacity device within the family, bridging lower-density parts like the A54SX08A and higher-density variants.

Replacement Considerations

Direct replacements are limited due to the discontinuation of the SX-A antifuse platform. Review Microchip's RTG4 or PolarFire families for modern alternatives, noting significant architectural differences between antifuse and flash/SRAM technologies. Cross-reference pinouts and I/O voltage levels carefully when migrating to newer devices.