A54SX08-2PLG84I

Overview

The Microsemi A54SX08-2PLG84I is an antifuse-based Field Programmable Gate Array (FPGA) from the SX-A family. It provides 12,000 system gates and 768 logic modules, comprising 512 combinatorial cells and 256 dedicated flip-flops. The device supports up to 130 user-programmable I/O pins and features three global clock networks. It operates within a voltage range of 2.25V to 5.25V and is available in industrial temperature grades (-40°C to +85°C). The -2 speed grade indicates approximately 25% faster performance than the standard speed variant.

Feature Summary

• Supports mixed-voltage operation with 5V input tolerance and drive strength across 2.5V, 3.3V, and 5V domains.
• Features hot-swap compliant I/Os allowing safe insertion into active systems without power sequencing requirements.
• Includes Actel Secure Programming Technology with FuseLock to prevent reverse engineering and design theft.
• Provides deterministic timing through unique local routing resources like DirectConnect and FastConnect.

Applications

• 66 MHz PCI compliant single-chip solutions
• Industrial control systems requiring mixed-voltage interfaces
• Secure embedded designs needing anti-tamper protection

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for the PLG84 package configuration. Check for RoHS compliance status if required by project specifications. Confirm availability as this component may be subject to end-of-life notices or supply chain constraints typical for legacy FPGA families.

Selection Notes

Select this model when 12,000 system gates are sufficient for the target logic density. The -2 speed grade is appropriate for designs requiring higher internal clock frequencies compared to standard variants. Verify that the 130 I/O count meets interface requirements. Consider the nonvolatile nature of the antifuse technology for permanent configuration needs without external memory.

Part Context

This component belongs to the Microsemi (formerly Actel) SX-A family of FPGAs. These devices utilize metal-to-metal programmable antifuse interconnect elements for permanent configuration. The family offers high-performance logic modules and robust security features, distinguishing it from volatile SRAM-based FPGAs. It serves as a cost-effective solution for low-power, high-performance applications.

Replacement Considerations

Direct pin-compatible replacements within the same package and speed grade are limited due to the discontinuation of certain speed grades. Evaluate A54SX08A variants with different suffixes for package or temperature differences. Cross-family migration to newer Microsemi PolarFire or SmartFusion devices may be necessary for long-term supply assurance.

FAQ

What is the maximum internal clock frequency for the A54SX08-2PLG84I?

The SX-A family supports internal clock frequencies up to 350 MHz. The -2 speed grade offers approximately 25% faster performance than the standard speed grade.

Does the A54SX08 support hot-swapping?

Yes, most I/Os on the A54SX08 are hot-swap compliant, allowing the device to be plugged into an electrically active system without causing damage or degrading reliability, except for 3.3V PCI configurations.

How does the A54SX08 handle unused JTAG pins?

In Flexible mode, TDI, TCK, and DDO can function as user I/Os. In Dedicated mode, all JTAG pins are reserved for Boundary Scan Testing. Unused pins should be configured appropriately in the design software to avoid floating states.