A54SX16P-TQG176

Overview

The A54SX16P-TQG176 is a nonvolatile Field Programmable Gate Array (FPGA) from the Actel SX-A family, manufactured by Microchip Technology. It provides 24,000 system gates and is housed in a 176-pin Thin Quad Flat Pack (TQFP) package. The device supports mixed-voltage operation at 2.5 V, 3.3 V, and 5 V with 5 V input tolerance. Key specifications include up to 180 user-programmable I/O pins, 1,452 configurable logic blocks (CLBs), and dedicated flip-flops for sequential logic. It features hot-swap compliant I/Os, boundary-scan testing compliance with IEEE 1149.1, and deterministic timing characteristics suitable for high-performance applications.

Feature Summary

• Nonvolatile antifuse architecture providing single-chip integration without external configuration memory
• Hot-swap compliant I/Os allowing insertion into active systems without power sequencing requirements
• Deterministic timing with user-controllable delays and 100% pin-locking capability
• Integrated Boundary-Scan Testing (BST) compliant with IEEE 1149.1 standards

Applications

• High-performance digital signal processing requiring deterministic latency
• Industrial control systems utilizing mixed-voltage I/O interfaces
• Secure embedded designs protected by FuseLock anti-tamper technology
• Systems requiring hot-swappable peripheral connections

Procurement Notes

Verify the specific speed grade suffix associated with the TQG176 package variant, as performance metrics vary between standard and faster grades. Confirm that the ordering suffix aligns with the required temperature range and packaging specifications defined in the official datasheet. Ensure compatibility with Actel Designer software versions supporting the SX-A family architecture.

Selection Notes

Select this component when a nonvolatile FPGA solution with mixed-voltage I/O support is required. The 176-pin TQFP package offers a balance of I/O density and form factor. Consider the 24,000 gate capacity against design complexity needs. Verify that the internal clock speeds meet the system's timing constraints, noting the distinction between internal performance and system-level throughput.

Part Context

This part belongs to the Actel SX-A family of FPGAs, which utilizes 0.22 μm / 0.25 μm CMOS antifuse technology. The SX-A series is designed for low-power, high-performance applications, offering a cost-effective alternative to multiple CPLDs or gate arrays. The family includes devices ranging from 8,000 to 108,000 system gates, with the A54SX16P representing the mid-range capacity tier.

Replacement Considerations

Direct replacements within the same package and pinout may include other speed grades of the A54SX16A series, such as A54SX16A-1TQG176 or A54SX16A-2TQG176, provided timing requirements are met. Cross-family migration to ProASIC3 or PolarFire requires significant architectural redesign due to differences in nonvolatile technology and I/O structures.