LC4256ZE-7TN100C

Complex Programmable Logic Devices Overview

The LC4256ZE-7TN100C is a complex programmable logic device from the ispMACH 4000ZE family, manufactured by Lattice Semiconductor. It features 256 macrocells and supports in-system programming via IEEE 1532. The device operates with a 1.8V supply voltage and offers interface compatibility with 3.3V, 2.5V, and 1.5V standards. Key electrical parameters include a maximum propagation delay of 7.5 ns and a maximum operating frequency of 241 MHz. It is housed in a 100-pin TQFP package and supports an industrial temperature range.

Complex Programmable Logic Devices Feature Summary

• Supports 1.8V core supply with flexible I/O voltage levels including 3.3V, 2.5V, and 1.5V.
• Enables in-system programming through the IEEE 1532 standard interface.
• Provides enhanced I/O capabilities such as slew rate control, bus-keeper latches, and hot socketing support.

Complex Programmable Logic Devices Applications

• Interface bridging between different voltage domains in mixed-signal systems.
• Prototyping and evaluation of CPLD designs using compatible breakout boards.
• General-purpose digital logic implementation requiring low power consumption.

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'ZE' to confirm the inclusion of enhanced features like IEEE 1532 support and specific I/O configurations compared to standard variants. Ensure the package type matches the target PCB footprint, typically 100-TQFP for this model. Confirm that the design toolchain supports the ispMACH 4000ZE architecture for proper compilation and bitstream generation.

Complex Programmable Logic Devices Selection Notes

Select this component when a balance of moderate logic density (256 macrocells) and high-speed performance (up to 241 MHz) is required. The 7ns speed grade offers a cost-effective solution for applications needing robust routing pools and pin-out retention. Consider the 1.8V operation for power-sensitive designs while maintaining compatibility with legacy 3.3V interfaces.

Complex Programmable Logic Devices Part Context

This part belongs to the ispMACH 4000ZE series, which enhances the original 4000Z architecture with improved timing predictability and first-time-fit rates. The series utilizes a robust Global Routing Pool and Output Routing Pool to facilitate easier design migration and layout flexibility. It is designed for applications demanding low power and high reliability in compact form factors.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include other speed grades of the LC4256ZE series, such as the -5 variant, which offers faster switching speeds. For higher density requirements, the LC4384ZE or LC4512ZE models provide increased macrocell counts while maintaining similar architectural features and pinout compatibility where applicable.