XCR3256XL-7PQ208C

Overview

The XCR3256XL-7PQ208C is an Electrically Erasable Programmable Logic Device (EEPROM-based PLD) manufactured by AMD (formerly Xilinx). It operates with a maximum clock frequency of 143 MHz and features a propagation delay of 7 ns. The component utilizes a PQFP-208 plastic package containing 208 pins, providing 164 I/O lines for system integration. It supports in-system programming and includes JTAG boundary scan capabilities for testing and configuration.

Feature Summary

• Maximum operating frequency of 143 MHz with 7 ns propagation delay
• 208-pin Plastic Quad Flat Package (PQFP) with 164 available I/O lines
• Supports In-System Programming (ISP) and JTAG Boundary Scan

Applications

• Logic replacement in industrial control systems
• Address decoding and bus bridging in embedded designs
• State machine implementation for consumer electronics

Procurement Notes

Verify the manufacturer designation carefully, as this part originates from the Xilinx portfolio now under AMD. Confirm RoHS compliance status and lead time requirements directly with authorized distributors, as availability may vary based on production lifecycle stages. Ensure storage conditions meet moisture sensitivity level 3 specifications prior to assembly.

Selection Notes

Select this device when a high-density CPLD solution is required with fast 7 ns switching speeds and extensive I/O count. Compare against Spartan or Artix FPGA families if reconfigurability or DSP capabilities are needed, as this PLD uses EEPROM technology suitable for static logic applications rather than complex dynamic processing tasks.

Part Context

This component belongs to the XC3000XL/XCR3000XL family of high-performance CPLDs. These devices bridge the gap between standard gate arrays and FPGAs, offering non-volatile configuration without external memory. The XL series specifically enhances speed and density over earlier generations while maintaining compatibility with existing design tools.

Replacement Considerations

Direct pin-to-pin replacements include the XCR3256XL-7PQ208I for industrial temperature range variants. Verify voltage supply requirements and I/O drive strengths when substituting with newer AMD/Altera or Lattice CPLD equivalents.