XCR3256XL-10PQG208C

Overview

The XCR3256XL-10PQG208C is an Electrically Erasable Programmable Logic Device (EPLD) manufactured by AMD (formerly Xilinx). It belongs to the XCR3000XL family, featuring a high-performance CMOS technology with non-volatile EEPROM memory for configuration retention. The device operates at a maximum clock frequency of 88 MHz and supports system-in-system programming capabilities. It is housed in a 208-pin Plastic Quad Flat Package (PQFP), providing 164 I/O lines for complex logic interfacing. The component is designed for robust digital logic applications requiring reprogrammability and low power consumption.

Feature Summary

• Non-volatile EEPROM architecture retains configuration without external memory
• Supports System-In-System Programming (SISP) for field updates
• High-speed performance with 12 ns propagation delay and 88 MHz max clock
• 164 available I/O lines in a 208-pin PQFP package

Applications

• Complex glue logic replacement in industrial control systems
• Address decoding and bus interface management
• State machine implementation for embedded controllers
• Power-on reset generation and supervisor circuits

Procurement Notes

Verify the manufacturer origin, as AMD acquired Xilinx. Confirm the specific suffix 'C' indicates commercial temperature range and 'I' indicates industrial range if cross-referencing variants. Ensure the datasheet matches the exact pinout for the PQFP-208 package to avoid integration errors during PCB design.

Selection Notes

Select this model when non-volatile configuration is required to eliminate external PROMs. Compare against the XC9500 series for higher density or the Spartan FPGA series for larger logic capacity. Verify voltage requirements (typically 2.5V or 3.3V) and ensure the 208-pin footprint fits the target enclosure constraints.

Part Context

This component is part of the XCR3000XL family, which bridges the gap between traditional CPLDs and FPGAs. It offers the ease of use of a CPLD with the non-volatility of an EPLD. The XCR3256 variant provides 2,560 usable macrocells, suitable for medium-complexity designs that require frequent field updates via JTAG.

Replacement Considerations

Direct pin-to-pin replacements include the XCR3256XL-10PQG208I (Industrial grade) or XCR3256XL-7PQG208C (Faster speed grade). Verify voltage compatibility and timing requirements before substituting with older XCR3000 or newer XC9500XL series devices.