A54SX16-1PQG208I

Overview

The A54SX16-1PQG208I is an industrial-grade FPGA from the SX-A family, utilizing nonvolatile antifuse technology. It provides 24,000 system gates and 1,452 logic modules within a 208-pin PQFP package. The device supports up to 175 user-programmable I/Os and operates at a maximum system frequency of 250 MHz with internal performance reaching 350 MHz. It functions across a temperature range of -40°C to +85°C and accepts supply voltages between 2.25V and 2.75V.

Feature Summary

• Nonvolatile single-chip solution using metal-to-metal programmable antifuse interconnect elements for permanent configuration without external memory.
• Supports hot-swap compliant I/Os allowing insertion into active systems without power sequencing requirements or system degradation.
• Features deterministic timing through segmented routing and high-drive clock networks including hardwired HCLK and routed CLKA/CLKB.
• Includes boundary-scan testing compliance with IEEE Standard 1149.1 (JTAG) and FuseLock security technology to prevent reverse engineering.

Applications

• High-performance digital signal processing requiring fast execution of complex logic functions
• PCI-compliant interface designs operating at 66 MHz
• Systems requiring mixed-voltage operation with 2.5 V, 3.3 V, and 5 V I/O standards

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature grade. Confirm that the component meets all necessary environmental and safety certifications required for the intended deployment environment before finalizing acquisition.

Selection Notes

Select this model when a nonvolatile FPGA architecture is required to eliminate configuration boot times associated with volatile devices. Ensure the design utilizes the available global clock resources and considers the specific I/O voltage levels supported by the SX-A family for optimal performance.

Part Context

This component belongs to the Actel SX-A family of FPGAs, which are fabricated on 0.22 μm / 0.25 μm CMOS process technology. The family includes variants such as the A54SX08A, A54SX32A, and A54SX72A, offering scalable gate counts from 12,000 to 108,000 system gates while maintaining consistent architectural features.

Replacement Considerations

Compatible alternatives within the same package include the A54SX16A-FQG208I and A54SX16A-CQG208I. Verify speed grades and temperature ranges match application requirements when substituting these variants.

FAQ

How does the SX-A architecture achieve deterministic timing?

Deterministic timing is achieved through the use of segmented routing and high-drive routing structures, combined with automatic place-and-route software that minimizes signal propagation delays by selecting optimal track lengths and antifuse paths.

What is the function of DirectConnect and FastConnect in the SX-A family?

DirectConnect provides a hardwired horizontal path between neighboring cells with less than 0.1 ns delay, while FastConnect enables routing within SuperClusters using a single antifuse connection with a maximum pin-to-pin propagation time of 0.3 ns.

Can the JTAG pins be used as general-purpose I/Os?

Yes, in Flexible mode, TDI, TCK, and TDO can function as user I/Os or BST pins. However, TMS cannot be employed as a user I/O in either Dedicated or Flexible modes.