A54SX16A-1FG256I

Overview

The A54SX16A-1FG256I is an industrial-grade Field Programmable Gate Array from the Actel SX-A family, utilizing 0.22 μm / 0.25 μm CMOS antifuse technology. It provides 24,000 typical system gates and supports up to 180 user-programmable I/O pins within a 256-pin Fine Pitch Ball Grid Array (FBGA) package. The device operates at a maximum system frequency of 250 MHz with internal performance reaching 350 MHz. It features three global clock networks and supports mixed-voltage operation for 2.5 V, 3.3 V, and 5 I/O standards.

Feature Summary

• Nonvolatile single-chip solution using metal-to-metal programmable antifuse interconnect elements for permanent configuration without external memory.
• Hot-swap compliant I/Os allowing insertion into active systems without power sequencing requirements or system degradation.
• Deterministic timing architecture featuring DirectConnect and FastConnect routing resources for predictable signal propagation delays.
• Integrated boundary-scan testing capabilities compliant with IEEE Standard 1149.1 (JTAG) for in-system diagnostic verification.

Applications

• High-performance digital logic integration requiring deterministic timing and low latency.
• Systems requiring hot-swappable interface modules with mixed voltage I/O standards.
• Secure applications utilizing FuseLock technology to prevent reverse engineering and design theft.
• Industrial control environments necessitating wide temperature range operation and robust signal integrity.

Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm package type, speed grade, and temperature rating. Confirm RoHS compliance status and lead-free packaging availability as these attributes are defined by the final character in the part number. Ensure compatibility with existing PCB footprints for the FBGA-256 package before procurement.

Selection Notes

Select this component when designs require nonvolatile configuration without external boot devices and demand high-speed deterministic performance. Consider the 24,000 gate capacity and 180 I/O limit relative to design complexity. Verify that the industrial temperature grade (-40°C to +85°C) meets environmental requirements and that the -1 speed grade satisfies timing constraints.

Part Context

This device belongs to the Actel SX-A family of FPGAs, which are characterized by their use of antifuse technology rather than volatile SRAM configurations. The SX-A series offers a balance of high performance and security, distinguishing itself from standard SRAM-based FPGAs by providing inherent protection against bitstream interception and eliminating the need for configuration flash memory.

Replacement Considerations

Direct pin-compatible replacements within the same package and speed grade may include other variants from the A54SX16A series, such as the commercial grade A54SX16A-1FG256C, provided the operating temperature range is sufficient. Cross-family migration to newer Microchip FPGA architectures requires schematic redesign and software toolchain updates.