A54SX16-PQG208I

Overview

The A54SX16-PQG208I is a nonvolatile FPGA from the SX-A family, fabricated on 0.22 μm / 0.25 μm CMOS antifuse technology. It provides 24,000 system gates and 1,452 logic modules (CLBs). The device supports up to 175 user-programmable I/O pins in a 208-pin PQFP package. It operates within an industrial temperature range of -40°C to +85°C. The architecture includes three global clock networks and features hot-swap compliant I/Os with mixed-voltage support for 2.5 V, 3.3 V, and 5 V standards.

Feature Summary

• Nonvolatile single-chip solution utilizing metal-to-metal programmable antifuse interconnect elements for permanent configuration without external memory.
• Supports mixed-voltage operation across 2.5 V, 3.3 V, and 5 V domains with 5 V input tolerance and drive strength.
• Hot-swap compliant I/Os allow insertion into active systems without degrading host reliability or requiring specific power sequencing.
• Includes IEEE 1149.1 Boundary-Scan Testing capabilities with dedicated or flexible JTAG pin configurations.

Applications

• High-performance digital logic integration replacing complex CPLDs or gate arrays
• Systems requiring deterministic timing and full pin-locking capabilities
• Industrial control applications operating within extended temperature ranges

Procurement Notes

Verify the component origin as Microsemi Corporation, noting that Actel was acquired by Microsemi. Confirm the package type is Plastic Quad Flat Pack (PQFP) with 208 pins. Ensure the suffix 'I' corresponds to the specified industrial temperature grade. Check for RoHS compliance status if required by local regulations, as standard packaging may differ from lead-free variants.

Selection Notes

Select this model when 24,000 system gates and 1,452 CLBs are sufficient for the design. The PQG208I variant is appropriate for surface-mount assembly requiring industrial temperature stability. Consider the A54SX16A series if automotive or military temperature grades are needed instead of the industrial grade. Verify that the 175 available user I/Os meet the interface requirements.

Part Context

This part belongs to the Actel SX-A family of FPGAs, which were originally manufactured by Actel Corporation before its acquisition by Microsemi. The SX-A family is characterized by its high-density antifuse technology and optimized routing resources like DirectConnect and FastConnect. This specific device represents a mid-range capacity option within the family, balancing logic density with I/O availability.

Replacement Considerations

Direct replacements include other devices from the A54SX16A series with different speed grades or packages, such as A54SX16A-PQG208C for commercial temperature or A54SX16A-CQG208I for ceramic packaging. Cross-family migration to ProASIC3 or IGLOO devices requires architectural redesign due to differences in nonvolatile technology and logic structure.

FAQ

What is the maximum internal clock frequency supported by the A54SX16-PQG208I?

The SX-A family architecture supports internal clock frequencies up to 350 MHz, enabling fast execution of complex logic functions.

How does the device handle power-up sequences for supply voltages?

The device is power-up/down friendly, meaning no sequencing is required for supply voltages. VCCA and VCCI can be powered up or down in any order.

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. However, TMS cannot be employed as a user I/O in either Dedicated or Flexible modes.