A54SX32A-BGG329I

Overview

The A54SX32A-BGG329I is a Field Programmable Gate Array from the Microchip Actel SX-A family, featuring 48,000 system gates and 2,880 logic modules. It supports up to 249 user-programmable I/O pins and utilizes 0.22 μm / 0.25 μm CMOS antifuse technology. The device operates at a maximum internal frequency of 350 MHz with a system performance of 250 MHz. It accommodates mixed-voltage operation at 2.5 V, 3.3 V, and 5 V with 5 V input tolerance. The component is housed in a 329-pin Plastic Ball Grid Array (PBGA) package and is rated for industrial temperature ranges (-40°C to +85°C).

Feature Summary

• Supports hot-swap compliant I/Os allowing safe insertion into active systems without power sequencing requirements.
• Provides deterministic timing through unique local routing resources like DirectConnect and FastConnect.
• Includes IEEE 1149.1 Boundary-Scan Testing capabilities for superior diagnostic and verification.
• Features nonvolatile antifuse architecture that prevents reverse engineering and design theft.

Applications

• 66 MHz PCI compliant single-chip solutions
• High-performance state machines and fast counters
• Complex digital logic integration replacing multiple CPLDs

Procurement Notes

Verify the specific speed grade suffix associated with this part number against official Microchip documentation to ensure correct timing characteristics. Confirm RoHS compliance status as packaging options vary. Check for any Product Change Notifications regarding manufacturing updates or obsolescence notices before finalizing procurement plans.

Selection Notes

Select this model when 48,000 system gates and 249 I/Os are required within a 329-pin BGA footprint. Ensure the design leverages the 2.5 V, 3.3 V, and 5 V mixed-voltage capabilities if interfacing with diverse logic families. Verify that the industrial temperature range meets the environmental requirements of the target application.

Part Context

This component belongs to the Actel SX-A family of FPGAs, which are built on high-voltage twin-well CMOS process technology. The family includes devices ranging from 12,000 to 108,000 system gates, offering various package options and speed grades to suit different performance and pin-count needs.

Replacement Considerations

Direct replacements within the same package and pinout include other speed grades of the A54SX32A series such as A54SX32A-FBGG329 or A54SX32A-TQG100A, provided the timing specifications meet the design requirements. Cross-family migration to newer Microchip FPGA architectures requires schematic and code re-verification.

FAQ

How does the SX-A architecture handle clock distribution?

The device features three clock networks: one hardwired HCLK buffer and two routed global clocks (CLKA, CLKB), ensuring fast and predictable signal propagation across the chip.

What security features protect the design in this FPGA?

The device uses Actel Secure Programming Technology with FuseLock™, which prevents reverse engineering by making it difficult to distinguish programmed antifuses and blocks unauthorized reading of the configuration.

Can unused I/O pins be left floating?

No, unused I/O pins must be configured as tristate outputs or tied to a defined logic level (High or Low) to prevent undefined states and potential current leakage.