XCR3256XL-12TQG144C

Overview

The XCR3256XL-12TQG144C is a Complex Programmable Logic Device (CPLD) from the CoolRunner-XPLA3 family, manufactured by AMD. It features 256 macrocells and 6000 system gates within a 144-pin TQFP package. The device operates on a supply voltage range of 2.7 V to 3.6 V and supports in-system programming via EEPROM technology. Key electrical specifications include a maximum operating frequency of 154 MHz and a typical propagation delay of 12 ns. It is designed for industrial temperature ranges, functioning reliably between -40°C and +85°C.

Feature Summary

• Contains 256 macrocells and 6000 system gates for complex logic implementation.
• Supports In-System Programming (ISP) with over 10,000 erase/program cycles using non-volatile EEPROM memory.
• Delivers high-speed performance with a maximum frequency of 154 MHz and 12 ns propagation delay.
• Operates within a wide voltage range of 2.7 V to 3.6 V and an industrial temperature range of -40°C to +85°C.

Applications

• High-density logic replacement in industrial control systems.
• Address bus buffering and protocol conversion in embedded designs.
• Power-on reset generation and clock management circuits.
• General-purpose digital logic interfacing in telecommunications equipment.

Procurement Notes

Verify component authenticity through authorized distributors due to potential availability constraints. Confirm RoHS compliance status as manufacturing processes may vary. Check for specific ordering suffixes that define package type or temperature grade. Ensure storage conditions adhere to moisture sensitivity level requirements before soldering. Validate pinout compatibility with existing PCB footprints during procurement planning.

Selection Notes

Select this model when 256 macrocells are sufficient for the design complexity. Choose the TQG144 package for surface-mount applications requiring moderate pin counts. Consider the 12 ns speed grade if timing margins allow for slower switching than the 10 ns variant. Verify power supply stability within the 2.7 V to 3.6 V range to ensure reliable operation across all logic states.

Part Context

This component belongs to the XCR3256XL series, part of AMD's CoolRunner-XPLA3 CPLD lineup. These devices bridge the gap between simple gate arrays and complex FPGAs, offering reprogrammability with lower power consumption. The series is characterized by its use of EEPROM technology, allowing for frequent reconfiguration without external memory components, making it suitable for evolving design requirements.

Replacement Considerations

Direct pin-to-pin replacements may be limited. Evaluate XC3256 variants for speed differences or XC2C256 models for architectural changes. Cross-reference pinouts carefully as package variations exist within the same logic density. Consult official AMD substitution guides for validated alternatives that maintain electrical and functional compatibility.