XCR3256XL-7FT256C

Overview

The XCR3256XL-7FT256C is a Complex Programmable Logic Device (CPLD) belonging to the CoolRunner XPLA3 series manufactured by AMD. It features 256 macrocells and supports up to 164 I/Os within a 256-pin FineLine BGA package. The device operates on a single 3V to 3.6V supply voltage and includes EEPROM-based non-volatile configuration memory. Key electrical parameters include a maximum propagation delay of 10.8 ns, a maximum operating frequency of 154 MHz, and an industrial temperature range of -40°C to +85°C.

Feature Summary

• 256 Macrocells with 6000 system gates for complex logic implementation
• In-System Programmability (ISP) via JTAG interface
• Non-volatile EEPROM configuration memory retaining data without power
• Single 3.0V to 3.6V VCCINT supply voltage operation

Applications

• Address decoding and bus bridging in embedded systems
• Power-on reset generation and supervisor circuits
• Clock buffering and distribution networks
• Translation between different logic families or voltage levels

Procurement Notes

Verify component authenticity through authorized distributors due to potential availability from secondary markets. Confirm RoHS compliance status as older revisions may differ. Check for moisture sensitivity level (MSL 3) handling requirements during storage and assembly to prevent package damage.

Selection Notes

Select this model when 256 macrocells are sufficient for the design logic density. Ensure the 256-pin FTBGA footprint fits the PCB layout constraints. Verify that the 10.8 ns delay meets timing requirements for the target clock speed of 154 MHz. Consider thermal dissipation capabilities within the specified -40°C to +85°C operating range.

Part Context

This part belongs to the AMD CoolRunner XPLA3 CPLD family, designed for low-power, high-density programmable logic applications. It serves as a successor to earlier XPLA devices, offering improved performance and ISP capabilities while maintaining compatibility with standard development tools like Vivado or ISE for legacy support.

Replacement Considerations

Direct pin-to-pin replacements may be limited. Evaluate XC2C256 variants for similar functionality if available. Cross-reference with Lattice LC4256V series for comparable macrocell counts and I/O configurations in alternative sourcing scenarios.