A54SX32-TQG176I

Overview

The A54SX32-TQG176I is a Field Programmable Gate Array from the Actel SX-A family, fabricated using 0.22 μm / 0.25 μm CMOS antifuse technology. It provides 48,000 system gates and 2,880 logic modules, including 1,800 combinatorial cells and 1,080 dedicated flip-flops. The device supports up to 249 user-programmable I/Os and features three global clock networks. Operating at an industrial temperature range of -40°C to +85°C, it utilizes a Thin Quad Flat Pack (TQFP) package with 176 pins. The architecture enables deterministic timing with internal performance reaching 350 MHz.

Feature Summary

• Supports mixed-voltage operation across 2.5 V, 3.3 V, and 5 V domains with 5 V input tolerance.
• Features hot-swap compliant I/Os allowing power-up/down without supply voltage sequencing requirements.
• Includes unique in-system diagnostic capabilities via Silicon Explorer II and IEEE 1149.1 boundary scan testing.
• Provides secure programming through FuseLock technology to prevent reverse engineering and design theft.

Applications

• Integration of 66 MHz PCI compliant designs into single-chip solutions.
• High-performance state machines and fast counters requiring deterministic timing.
• Systems requiring nonvolatile configuration without external bitstream memory.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature grade. Confirm RoHS compliance status as packaging options may vary. Check for product discontinuation notices or lifecycle changes before finalizing procurement plans.

Selection Notes

Select this model when industrial temperature stability (-40°C to +85°C) is required alongside high pin counts. Ensure the design fits within the 249 available user I/Os and 48,000 system gate capacity. Consider the TQFP-176 package constraints for PCB layout if surface-mount thin profile is necessary.

Part Context

This component belongs to the Actel SX-A family of FPGAs, which are distinguished by their metal-to-metal programmable antifuse interconnect. Unlike volatile SRAM-based FPGAs, these devices retain configuration data without power, offering inherent security and simplified system design by eliminating external configuration flash memory.

Replacement Considerations

Cross-reference with other speed grades within the A54SX32A series, such as standard or faster variants, if timing requirements differ. Verify compatibility with alternative packages like PBGA329 or FBGA256 if pin count and form factor allow for redesign.