A54SX32A-1FGG256I

Overview

The A54SX32A-1FGG256I is an industrial-grade FPGA from the Actel SX-A family, featuring 48,000 system gates and a 256-pin Fine Pitch Ball Grid Array (FBGA) package. It supports up to 203 user I/Os with mixed-voltage operation at 2.5 V, 3.3 V, and 5 V. The device operates within a temperature range of -40°C to +85°C and utilizes 0.22 μm / 0.25 μm CMOS antifuse technology.

Feature Summary

• Supports hot-swap capabilities for most I/O standards, allowing safe insertion into active systems without power sequencing requirements.
• Provides deterministic timing through patented metal-to-metal antifuse interconnects and dedicated routing resources like DirectConnect and FastConnect.
• Includes IEEE 1149.1 compliant Boundary-Scan Testing (BST) with flexible JTAG pin configurations for in-system diagnostics.

Applications

• Industrial control systems requiring robust performance across wide temperature ranges
• High-speed data path logic and state machine implementations
• Secure embedded designs utilizing nonvolatile antifuse architecture

Procurement Notes

Verify component authenticity through authorized Microchip Technology distributors. Confirm that the ordering suffix 'I' corresponds to the Industrial temperature grade (-40°C to +85°C). Ensure compatibility with existing PCB footprints for the 256-pin FBGA package before procurement.

Selection Notes

Select this model when industrial temperature stability is required alongside high-density logic resources. Compare against commercial variants if operating conditions remain within standard limits. Verify that the 203 I/O count meets interface requirements for the target application design.

Part Context

This part belongs to the Actel SX-A family of field-programmable gate arrays. It shares architectural features with other devices in the series, such as the A54SX16A and A54SX72A, but offers a specific balance of logic capacity and I/O density suitable for mid-range complex digital designs.

Replacement Considerations

Direct functional replacements within the same package and speed grade are limited due to the discontinuation of certain speed grades. Evaluate newer Microchip FPGA families for modern alternatives, ensuring pinout and resource compatibility.

FAQ

What is the maximum internal clock frequency supported by the A54SX32A?

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

How does the A54SX32A handle unused I/O pins during power-up?

Unused I/Os can be configured with individually selectable pull-up or pull-down resistors during power-up to ensure a known state, though the default configuration is tristate.

Is the A54SX32A compatible with 5 V PCI standards?

Yes, the device supports 3.3 V and 5 V PCI standards, although 3.3 V PCI I/Os are not hot-swappable compared to other I/O types.