A54SX16-1TQ176

Overview

The A54SX16-1TQ176 is a Field Programmable Gate Array from the Actel SX-A family, featuring 24,000 system gates and 1,452 logic modules. It operates at a maximum system frequency of 250 MHz with an internal performance of 350 MHz. The device utilizes 0.22 μm / 0.25 μm CMOS antifuse technology and supports mixed-voltage I/O standards including 2.5 V, 3.3 V, and 5 V. It provides up to 147 user-programmable I/O pins in a 176-pin Thin Quad Flat Pack (TQFP) package.

Feature Summary

• Nonvolatile single-chip solution using metal-to-metal programmable antifuse interconnect elements for permanent low-impedance connections.
• Supports hot-swap compliant I/Os allowing power-up/down without voltage sequencing requirements.
• Includes dedicated routing resources such as DirectConnect and FastConnect for deterministic timing and high-speed signal propagation.
• Compliant with IEEE Standard 1149.1 (JTAG) for boundary-scan testing and diagnostic verification.

Applications

• High-performance digital logic integration requiring deterministic timing
• Systems requiring hot-swappable interface capabilities
• Applications needing secure nonvolatile configuration without bitstream interception

Procurement Notes

Verify component authenticity through authorized Microchip or Actel distributors. Confirm manufacturing date codes and lot numbers against current supply chain records. Ensure storage conditions comply with moisture sensitivity level requirements prior to reflow soldering processes.

Selection Notes

Select this model for designs requiring 24,000 system gates within a 176-pin TQFP footprint. Verify that the -1 speed grade meets the specific timing constraints of the target application. Ensure the design accommodates the required I/O voltage levels supported by the SX-A architecture.

Part Context

This component belongs to the Actel SX-A family of FPGAs, which are fabricated on a high-voltage twin-well CMOS process. The family offers various gate counts ranging from 8,000 to 108,000 system gates across different package options, providing a versatile platform for low-power, high-performance designs.

Replacement Considerations

Direct replacements include other speed grades within the A54SX16A series such as A54SX16A-2TQ176 or standard speed variants. Alternative packages like PQFP208 or CQFP256 may be considered if pin count flexibility allows, though logical resource utilization remains consistent across the A54SX16A device type.

FAQ

What is the maximum internal clock frequency for the A54SX16A family?

The A54SX16A family supports an internal clock frequency of up to 350 MHz.

How does the DirectConnect feature improve performance?

DirectConnect provides a hardwired horizontal routing resource between a C-cell and its neighboring R-cell within a SuperCluster, achieving a maximum routing delay of less than 0.1 ns without using programmable antifuses.

Is the A54SX16A suitable for hot-swap applications?

Yes, the I/Os are configured to be hot-swappable, meaning the device will not degrade host system reliability when plugged into an electrically active system, except for 3.3 V PCI configurations.