A54SX16-2VQG100

Overview

The A54SX16-2VQG100 is a Field Programmable Gate Array from the Microsemi SX-A family, utilizing antifuse technology. It provides 24,000 system gates and 1,452 configurable logic blocks (CLBs). The device supports a maximum system clock frequency of 250 MHz with an internal performance capability of 350 MHz. It features up to 81 user-programmable I/O pins and includes dedicated flip-flops for sequential logic. The component operates within a commercial temperature range of 0°C to +70°C and is housed in a 100-pin Thin Quad Flat Pack (TQFP) package.

Feature Summary

• Nonvolatile single-chip solution using metal-to-metal programmable antifuse interconnects for permanent configuration without external memory.
• Hot-swap compliant I/Os allowing insertion into active systems without power sequencing requirements or system damage.
• Supports mixed-voltage operation including 2.5 V, 3.3 V, and 5 V standards with 5 V input tolerance and drive strength.
• Deterministic timing architecture featuring DirectConnect and FastConnect routing resources for predictable signal propagation.

Applications

• High-performance digital logic integration replacing complex CPLDs or gate arrays
• PCI-compliant interface designs requiring 66 MHz bus speeds
• Systems requiring instant-on functionality due to nonvolatile flash-based architecture
• Applications necessitating hot-swappable hardware capabilities

Procurement Notes

Verify the specific speed grade suffix '2' corresponds to the required approximately 25% faster performance relative to standard speed. Confirm the 'V' package designation indicates the 100-pin TQFP form factor. Ensure the absence of an application suffix implies the Commercial temperature grade. Check for RoHS compliance markings if environmental regulations apply to the target assembly process.

Selection Notes

Select this model when 24,000 system gates are sufficient for the design complexity. The -2 speed grade is appropriate for designs requiring higher throughput than the standard grade but less than the -1 grade. Verify that the 100-pin TQFP footprint fits the PCB layout constraints. Consider the commercial temperature range limits if the operating environment exceeds 70°C.

Part Context

This part belongs to the Actel SX-A family of FPGAs, which are fabricated on a 0.22 μm / 0.25 μm CMOS process. The family is characterized by its high-density antifuse technology and support for multiple voltage standards. The A54SX16 variant sits between the A54SX08 and A54SX32 devices in terms of logic capacity and I/O count.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-referencing should be performed carefully as antifuse devices are one-time programmable and pin/parameter compatibility must be verified against the specific SX-A datasheet.

FAQ

What is the difference between DirectConnect and FastConnect routing?

DirectConnect provides a hardwired horizontal path between a C-cell and its neighboring R-cell within a SuperCluster, requiring no antifuses and offering a maximum delay of 0.1 ns. FastConnect allows routing between any two modules within a SuperCluster using only one antifuse, with a maximum pin-to-pin propagation time of 0.3 ns.

How does the device handle power-up sequences for VCCA and VCCI?

The SX-A family is power-up/down friendly, meaning VCCA and VCCI do not need to be stable during power-up and can be powered in any order. All I/Os are tristated until normal operating conditions are reached, preventing damage to the host system.

Can the JTAG pins be used as general-purpose I/Os?

Yes, in Flexible mode, TDI, TCK, and TDO can function as user I/Os or BST pins. However, TMS cannot be employed as a user I/O in either Dedicated or Flexible modes. In Dedicated mode, all JTAG pins are reserved for Boundary Scan Testing.