A54SX16-2VQG100I

Overview

The A54SX16-2VQG100I is a Field Programmable Gate Array from the Microsemi SX-A family, featuring 24,000 system gates and 81 user I/Os. It operates at a maximum clock frequency of 250 MHz with an internal performance of 350 MHz. The device utilizes 0.22 μm / 0.25 μm CMOS antifuse technology and supports mixed-voltage operation at 2.5 V, 3.3 V, and 5 V. It is housed in a 100-pin Thin Quad Flat Pack (TQFP) package and is rated for industrial temperature ranges (-40°C to +85°C).

Feature Summary

• Supports hot-swap compliant I/Os and power-up/down friendly operation without supply voltage sequencing.
• Features nonvolatile single-chip architecture with Actel Secure Programming Technology and FuseLock™ to prevent reverse engineering.
• Includes configurable I/O support for multiple standards including 3.3 V/5 V PCI, 5 V TTL, 3.3 V LVTTL, and 2.5 V LVCMOS2.
• Provides deterministic timing with up to 100% resource utilization and pin locking capabilities.

Applications

• High-performance logic integration requiring low-power operation.
• Systems requiring hot-swappable interface capabilities.
• Applications needing secure, nonvolatile programmable logic solutions.

Procurement Notes

Verify the specific ordering suffix 'I' confirms the industrial temperature grade range of -40°C to +85°C as defined in the SX-A datasheet. Confirm that the '2' speed grade meets the required 250 MHz system performance specifications for the target design. Ensure the TQFP-100 package dimensions align with the PCB footprint requirements.

Selection Notes

Select this component when 24,000 system gates and 81 I/Os are sufficient for the design complexity. The -2 speed grade provides approximately 25% faster performance than the standard grade. Consider the industrial temperature rating if the operating environment exceeds commercial limits. Verify that the 0.22 μm / 0.25 μm process technology meets the power and density requirements compared to newer families.

Part Context

This part belongs to the Actel SX-A family of FPGAs, which are built on antifuse technology. The SX-A series offers high-density logic with nonvolatile configuration, distinguishing it from volatile SRAM-based FPGAs. The A54SX16 variant sits between the A54SX08 and A54SX32 in terms of capacity within this specific product line.

Replacement Considerations

Direct replacements within the same package and pinout include other speed grades of the A54SX16A series, such as A54SX16-1VQG100I or A54SX16-VQG100I, provided the timing requirements allow for slower performance. Cross-family migration to newer Microchip FPGA architectures requires schematic and software redesign due to architectural differences.

FAQ

What is the difference between Dedicated and Flexible JTAG modes?

In Dedicated mode, all JTAG pins are reserved for Boundary Scan Testing and cannot be used as user I/Os. In Flexible mode, TDI, TCK, and TDO can function as either user I/Os or BST pins depending on the state of the TAP controller.

How does the SX-A family handle power-up sequences?

The SX-A I/Os are configured to be hot-swappable and power-up/down friendly. Supply voltages VCCA and VCCI do not need to be stable during power-up and can be powered in any order without causing damage to the host system.

What security features are included in the A54SX16?

The device includes Actel Secure Programming Technology with FuseLock™, which prevents unauthorized reading of the bitstream and protects against reverse engineering by making it difficult to distinguish between programmed and unprogrammed antifuses.