A54SX08-2VQG100

Overview

The A54SX08-2VQG100 is a field-programmable gate array from the Actel SX-A family, fabricated using 0.22 μm / 0.25 μm CMOS antifuse technology. It provides 12,000 system gates, 768 combinatorial cells, and up to 512 dedicated flip-flops. The device operates at a maximum system performance of 250 MHz with internal clock frequencies reaching 350 MHz. It supports mixed-voltage I/O standards including 2.5 V, 3.3 V, and 5 V levels, featuring hot-swap compliant inputs and configurable weak-resistor pull-ups or pull-downs for power-up states.

Feature Summary

• Nonvolatile single-chip solution utilizing metal-to-metal programmable antifuse interconnect elements for permanent low-impedance connections.
• Supports mixed-voltage operation with 5 V input tolerance and drive strength across 2.5 V, 3.3 V, and 5 V domains.
• Hot-swap compliant I/Os allow insertion into electrically active systems without degrading host reliability or requiring supply voltage sequencing.
• Includes boundary-scan testing compliance with IEEE Standard 1149.1 (JTAG) for diagnostic and verification capabilities.

Applications

• High-performance logic integration replacing complex programmable logic devices (CPLDs).
• Systems requiring deterministic timing and user-controllable signal propagation delays.
• Applications necessitating secure design protection against reverse engineering via FuseLock technology.

Procurement Notes

Verify the specific ordering suffixes against the manufacturer's current datasheet to confirm package type, speed grade, and temperature range compatibility. Ensure that any required configuration software licenses are available prior to procurement. Confirm RoHS compliance status if environmental regulations apply to the target assembly process.

Selection Notes

Select this component when designs require nonvolatile configuration without external memory chips. Consider the 12,000 system gate capacity for moderate complexity logic functions. Evaluate the -2 speed grade requirements against the 250 MHz system performance limit. Verify that the 100-pin TQFP package fits the physical constraints of the printed circuit board layout.

Part Context

This part belongs to the Actel SX-A family of FPGAs, which utilizes antifuse technology for high-speed, secure, and nonvolatile programming. The family ranges from 8,000 to 108,000 system gates, offering scalable solutions for various application densities while maintaining consistent architectural features such as DirectConnect and FastConnect routing resources.

Replacement Considerations

Direct replacements within the same package and pinout include other speed grades of the A54SX08A series, such as the standard or -1 variants, provided timing requirements are met. Cross-family migration to newer Microchip FPGA architectures requires significant redesign due to differences in programming technology and resource architecture.

FAQ

How does the SX-A architecture ensure security against reverse engineering?

Security is ensured through the inherent difficulty of distinguishing programmed from unprogrammed antifuses and the Actel FuseLock technology, which prevents reading back the configuration data and protects against invasive probing attacks.

What is the behavior of I/O pins during power-up or hot-swap events?

During power-up or hot-swap, all I/Os are tristated by default. The device outputs remain in a high-impedance state until normal operating conditions are reached, preventing damage to the host system.

Can unused JTAG pins be utilized as general-purpose I/Os?

Yes, in Flexible mode, TDI, TCK, and TDO can function as user I/Os. However, TMS cannot be used as a user I/O in either Dedicated or Flexible modes.