XCR3256XL-12FT256I

Overview

The XCR3256XL-12FT256I is a Complex Programmable Logic Device (CPLD) belonging to the CoolRunner XPLA3 series, manufactured by AMD. It features 256 macrocells and 16 logic blocks within a 256-pin FineLine BGA package. The device supports system-in-system programming with EEPROM storage technology. Key electrical parameters include a maximum propagation delay of 10.8 ns, an operating voltage range of 3V to 3.6V, and a maximum operating frequency of 154 MHz. It accommodates 164 I/O lines and operates within a commercial temperature range of 0°C to 70°C.

Feature Summary

• 256 Macrocells with 16 Logic Blocks for flexible digital logic implementation
• System-in-System Programming capability allowing in-circuit reconfiguration
• EEPROM non-volatile memory technology for configuration retention
• High-speed performance with 10.8 ns max propagation delay and 154 MHz max frequency

Applications

• Digital signal processing control interfaces
• Address decoding and bus bridging in embedded systems
• State machine implementation for industrial automation
• Replacement for legacy GALs and PALs in modern designs

Procurement Notes

This component has been officially discontinued as per Product Discontinuation Notification dated January 1, 2024. Verification of current availability requires checking authorized distributors for remaining stock or approved replacement parts. Ensure compliance with RoHS status, which is listed as non-compliant for this specific part number. Confirm moisture sensitivity level (MSL 3) handling requirements during procurement and storage.

Selection Notes

Select this CPLD when designing systems requiring moderate logic density with high I/O counts in a compact footprint. The FTG256 package offers 256 pins suitable for complex board-to-board connections. Verify that the 3V to 3.6V supply voltage aligns with the target system's power rails. Consider the 10.8 ns delay for timing closure in synchronous designs operating up to 154 MHz.

Part Context

Part of the CoolRunner XPLA3 family, designed for low-power, high-performance CPLD applications. This series bridges the gap between simple PLDs and FPGAs, offering deterministic timing and easy programming. The XCR3256XL variant specifically targets cost-sensitive applications requiring reliable, reprogrammable logic without the complexity of FPGA configuration memories.

Replacement Considerations

AMD lists XC2C256-7FTG256C as a similar alternative. Lattice Semiconductor LC4256V-75FTN256BC is also noted as a substitute. Verify pin compatibility and logic resource equivalence before substitution.