A54SX16P-1TQG176

Overview

The A54SX16P-1TQG176 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 24,000 system gates and 1,452 configurable logic blocks (CLBs). The device supports a maximum internal clock frequency of 350 MHz with a typical system performance of 250 MHz. It features up to 1,980 dedicated flip-flops and 147 user-programmable I/O pins in a 176-pin Thin Quad Flat Pack (TQFP) package. The component operates at 2.5 V, 3.3 V, or 5.0 V supply voltages with mixed-voltage I/O support.

Feature Summary

• Supports hot-swap capabilities for most I/O standards, allowing safe insertion into active systems without power sequencing requirements.
• Features deterministic timing through metal-to-metal programmable antifuse interconnects that ensure low impedance and predictable signal propagation.
• Includes IEEE 1149.1 compliant boundary-scan testing with flexible JTAG pin configurations for in-system diagnostic verification.

Applications

• Integration of complex CPLD functionality into single-chip solutions requiring high performance.
• Designs requiring nonvolatile configuration without external configuration memory devices.
• Applications necessitating mixed-voltage operation with 5 V input tolerance and drive strength.

Procurement Notes

Verify the specific speed grade suffix '1' corresponds to approximately 15% faster performance than standard speed. Confirm the 'P' package designation indicates a 176-pin TQFP form factor. Ensure the temperature grade matches the intended operational environment, as the datasheet lists Commercial, Industrial, Automotive, and Military options for this package type.

Selection Notes

Select this model when 24,000 system gates are required within a 176-pin footprint. Consider the 350 MHz internal performance limit for high-speed logic designs. Evaluate the need for mixed-voltage I/O compatibility if interfacing with both 3.3 V and 5 V peripherals. Verify that the antifuse technology aligns with the project's security and reprogrammability constraints.

Part Context

This component belongs to the Actel SX-A family of FPGAs, which utilizes antifuse technology for permanent, nonvolatile configuration. The family ranges from 12,000 to 108,000 system gates. The SX-A architecture emphasizes high performance through direct connect routing and fast clock networks, targeting applications where deterministic timing and low power consumption are critical.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Microchip Technology for current equivalent offerings or migration paths from discontinued Actel products.