A54SX16A-FFG256

Overview

The A54SX16A-FFG256 is a Field Programmable Gate Array from the Actel SX-A family, featuring 24,000 system gates and 1,452 configurable logic blocks. It utilizes 0.22 μm / 0.25 μm CMOS antifuse technology with a 2.5 V core voltage operating between 2.25 V and 2.75 V. The device supports up to 180 user-programmable I/Os in a 256-pin Fine Pitch Ball Grid Array package. It offers 250 MHz system performance and 350 MHz internal clock speeds, including three global clock networks.

Feature Summary

• Nonvolatile single-chip solution using metal-to-metal programmable antifuse interconnect elements for permanent low-impedance connections.
• Supports mixed-voltage operation with 5 V input tolerance and drive strength across 2.5 V, 3.3 V, and 5 V standards.
• Hot-swap compliant I/Os allowing safe insertion into active systems without power sequencing requirements.
• Includes dedicated routing resources like DirectConnect and FastConnect for deterministic timing and high-speed signal propagation.

Applications

• High-performance digital signal processing requiring fast counters and state machines
• PCI-compliant interface designs supporting 66 MHz operations
• Secure embedded control systems utilizing FuseLock anti-tamper features

Procurement Notes

Verify the specific speed grade suffix associated with the FFG256 package, as standard availability may vary by revision. Confirm RoHS compliance status through official Microchip documentation prior to ordering. Ensure design files account for the non-reprogrammable nature of antifuse technology during the procurement phase.

Selection Notes

Select this component when designing for applications requiring high pin counts with fine-pitch packaging constraints. Consider the 24,000 gate capacity against logic density requirements. Verify that the 2.5 V core voltage aligns with the target board's power distribution network and I/O voltage levels.

Part Context

This part belongs to the Actel SX-A FPGA family, which bridges the gap between CPLDs and complex ASICs. The SX-A series is characterized by its antifuse architecture, offering one-time programmability with high reliability and security. It serves as a versatile platform for integrating complex logic functions previously handled by multiple discrete components.

Replacement Considerations

Direct replacements within the same package include other speed grades of the A54SX16A series, such as A54SX16A-FGG256 or A54SX16A-1FGG256. Cross-family migration to newer Microchip PolarFire or IGLOO devices requires significant architectural redesign due to differences in memory type and I/O structures.