A54SX72A-FPQ208

Overview

The A54SX72A-FPQ208 is a field-programmable gate array from the SX-A family, fabricated using 0.22 μm / 0.25 μm CMOS antifuse technology. It provides 108,000 system gates and supports up to 360 user-programmable I/O pins within a 208-pin Plastic Quad Flat Pack (PQFP) package. The device features 6,036 logic modules, including dedicated flip-flops, and operates with internal clock frequencies up to 350 MHz. It supports mixed-voltage I/O standards of 2.5 V, 3.3 V, and 5 V, ensuring compatibility with various system interfaces.

Feature Summary

• Nonvolatile single-chip solution utilizing metal-to-metal programmable antifuse interconnect elements for permanent low-impedance connections.
• Hot-swap compliant I/Os allowing safe insertion into electrically active systems without degrading host reliability.
• Configurable weak-resistor pull-up or pull-down capabilities for I/O pins to ensure deterministic power-up states.
• Support for IEEE 1149.1 Boundary-Scan Testing with Dedicated and Flexible JTAG modes.

Applications

• High-performance digital logic integration requiring deterministic timing and fast signal propagation.
• Systems requiring hot-swappable interface capabilities and flexible power sequencing.
• Applications needing secure programming with protection against reverse engineering via FuseLock technology.

Procurement Notes

Verify the specific suffix 'F' indicates the standard speed grade variant as defined in the ordering information. Confirm that the PQFP-208 package matches the required footprint for PCB design. Ensure the temperature grade aligns with the operational environment requirements, noting that commercial grades are typically designated by a blank suffix while industrial grades use 'I'.

Selection Notes

Select this model when 108,000 system gates and 360 I/Os are required in a PQFP-208 package. Consider the -F speed grade if standard performance meets timing constraints. Verify support for mixed-voltage I/O standards such as 3.3 V PCI or 5 V TTL if interfacing with legacy components. Check availability of Quadrant Clocks if complex clock distribution across the die is necessary.

Part Context

This component belongs to the Actel SX-A family of FPGAs, which utilizes antifuse technology for nonvolatile configuration. The SX-A series is designed for cost-effective, high-performance designs with low power consumption. The A54SX72A represents the highest capacity device in the base SX-A lineup, offering significant logic density compared to smaller variants like the A54SX08A or A54SX32A.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult Microchip Technology for current equivalent products or migration paths from discontinued antifuse families.

FAQ

What is the maximum internal clock frequency supported by the A54SX72A?

The A54SX72A supports internal clock frequencies up to 350 MHz.

How many quadrant clocks are available in the A54SX72A device?

The A54SX72A provides four quadrant clocks (QCLKA, QCLKB, QCLKC, and QCLKD), which can drive individual quadrants of the chip.

Is the A54SX72A compatible with hot-swap applications?

Yes, the I/Os are configured to be hot-swappable, except for 3.3 V PCI configurations. During power-up/down, all I/Os are tristated to prevent damage to the host system.