A54SX08A-2TQ100I

Overview

The A54SX08A-2TQ100I is an antifuse-based Field Programmable Gate Array from the SX-A family, manufactured by Microchip Technology. It features 12,000 system gates and 768 logic modules. The device provides 81 user-programmable I/O pins within a 100-pin Thin Quad Flat Pack (TQFP) package. It operates at a maximum system frequency of 250 MHz with internal performance reaching 350 MHz. Electrical specifications include a supply voltage range of 2.25 V to 2.75 V for standard operation, supporting mixed-voltage I/O standards including 3.3 V, 5 V PCI, and 5 V TTL. The industrial temperature grade (-40°C to +85°C) is indicated by the 'I' suffix.

Feature Summary

• Nonvolatile single-chip solution utilizing metal-to-metal programmable antifuse technology for permanent configuration without external memory.
• Hot-swap compliant I/Os allowing safe insertion into electrically active systems without power sequencing requirements.
• Deterministic timing architecture featuring DirectConnect and FastConnect routing resources for predictable signal propagation.
• Integrated security via FuseLock technology preventing reverse engineering and unauthorized design access.

Applications

• High-performance digital logic integration replacing complex CPLDs or gate arrays.
• PCI-compliant interface designs requiring 66 MHz bus speeds.
• Industrial control systems requiring deterministic timing and hot-swap capabilities.
• Secure embedded applications needing protection against intellectual property theft.

Procurement Notes

Verify component authenticity through authorized Microchip distributors. Confirm the specific ordering suffix matches the required speed grade, package type, and temperature range. Check for end-of-life status or obsolescence notices as older FPGA families may have limited availability. Ensure compliance with RoHS directives if applicable to the manufacturing environment.

Selection Notes

Select this model when 12,000 system gates are sufficient for the design complexity. The -2 speed grade offers approximately 25% faster performance than the standard grade. Ensure the TQFP-100 package fits the PCB footprint constraints. Verify that the 2.5V core voltage requirement aligns with the system power supply design. Consider the industrial temperature range if operating in harsh environments.

Part Context

This component belongs to the Actel SX-A family of FPGAs, which were originally developed by Actel Corporation before being acquired by Microsemi and subsequently Microchip Technology. The SX-A series is characterized by its antifuse technology, offering high reliability and security compared to volatile SRAM-based FPGAs. It serves as a bridge between traditional CPLDs and larger FPGA architectures.

Replacement Considerations

Direct pin-compatible replacements within the same package and speed grade are limited due to the discontinuation of many SX-A variants. Designers may consider migrating to newer Microchip PolarFire or IGLOO2 families, though these require significant schematic and layout changes. Cross-reference with A54SX08A-1TQ100I for slower speed options if performance margins allow.