LC5256MV-5FN256C

Complex Programmable Logic Devices Overview

The LC5256MV-5FN256C is a discontinued Complex Programmable Logic Device (CPLD) belonging to the ispXPLD 5000MX family. It features 768 macrocells and operates with a typical propagation delay of 9.5 ns. The device utilizes a 3.3V core supply voltage and supports in-system programmability via the IEEE 1532 interface. It is housed in a 256-pin Fine-Pitch Ball Grid Array (FPBGA) package, providing 193 I/O pins for system integration.

Complex Programmable Logic Devices Feature Summary

• 768 Macrocells with Flexible Multi-Function Block (MFB) architecture supporting logic, SRAM, FIFO, and CAM modes
• In-System Programmability via IEEE 1532 interface for instant-on capability and design security
• sysIO™ interfaces supporting LVCMOS 1.8, 2.5, and 3.3V standards with 5V tolerant inputs
• Two sysCLOCK™ PLLs for timing control with multiply/divide ratios between 1 and 32

Complex Programmable Logic Devices Applications

• Complex glue logic replacement in mixed-voltage systems
• Buffering and protocol conversion between different voltage domains
• Boot configuration and system control logic requiring instant-on functionality
• Arithmetic functions and address decoding using SuperWIDE™ logic capabilities

Complex Programmable Logic Devices Procurement Notes

This specific part number is officially discontinued as per Product Change Notification #09-10. Verification of current availability should be conducted through authorized distributors or by consulting Lattice Semiconductor for active replacement recommendations within the same or successor families.

Complex Programmable Logic Devices Selection Notes

Designers requiring this density should evaluate the LC5256MB or LC5256MC variants for alternative voltage options (2.5V or 1.8V respectively). For new designs, migration to modern Lattice FPGA or CPLD families is recommended to ensure long-term supply continuity and access to updated feature sets.

Complex Programmable Logic Devices Part Context

The LC5256MV-5FN256C is part of the ispXPLD 5000MX family, which extends the SuperWIDE ispMACH 5000 architecture with flexible memory capabilities. This family was designed to bridge the gap between traditional CPLDs and FPGAs, offering deterministic timing and high-speed performance up to 300MHz fMAX for the 5256MX variant.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-to-pin replacements are not explicitly listed in the provided datasheet due to the discontinuation status. Users should consult Lattice's product selector guide for equivalent density devices in the MachXO, CrossLink, or Certus-NX families.