A42MX36-CQ208B

Overview

The A42MX36-CQ208B is a high-density Field Programmable Gate Array (FPGA) from the Microchip MX family, designed as a single-chip ASIC alternative. It features 54,000 system gates and 2,438 Configurable Logic Blocks (CLBs). The device supports mixed-voltage operation with core and I/O voltages of 3.3V or 5.0V, ensuring PCI compliance. It includes up to 2.5 kbits of configurable dual-port SRAM for embedded memory applications. The component utilizes fast wide-decode circuitry and offers up to 202 user-programmable I/O pins. It is housed in a 208-pin CQFP package and operates within a commercial temperature range.

Feature Summary

• High-capacity logic density suitable for replacing complex ASICs
• Mixed-voltage capability supporting both 3.3V and 5.0V core and I/O standards
• Integrated configurable dual-port SRAM for data buffering and storage
• Fast wide-decode circuitry enabling high-speed address decoding

Applications

• Complex digital logic replacement for custom ASIC designs
• PCI-compliant interface controllers and bridge circuits
• Industrial automation control systems requiring mixed voltage levels
• Military and aerospace avionics utilizing qualified ceramic packages

Procurement Notes

Verify the specific suffix 'B' against official Microchip documentation to confirm if it denotes a specific revision, lead-free status, or packaging variation distinct from the standard A42MX36-CQ208. Cross-reference the datasheet version to ensure compatibility with current manufacturing processes, as legacy FPGA families may have undergone assembly site changes or software updates affecting bitstream generation tools.

Selection Notes

Select this component when a design requires approximately 54k system gates with mixed 3.3V/5.0V I/O flexibility. Ensure the 208-pin CQFP footprint matches the PCB layout constraints. Verify that the required embedded memory does not exceed the available 2.5 kbits of dual-port SRAM. Confirm that the commercial temperature rating meets the operational environment requirements.

Part Context

This part belongs to the Microsemi/Microchip MX FPGA family, which bridges the gap between low-density CPLDs and high-end FPGAs. The series is known for non-volatile flash technology, allowing instant-on functionality without external configuration memory. The A42MX36 variant specifically targets mid-range complexity applications previously handled by discrete logic or simple ASICs.

Replacement Considerations

Direct pin-to-pin replacements are limited due to the proprietary architecture. Consider the A42MX36-1PQG208 for QFP package alternatives or other MX family members like the A42MX24 for lower gate counts. Verify toolchain compatibility with Actel Design Suite or Libero SoC for bitstream conversion.