M5-256/68-20VI/1

Complex Programmable Logic Devices Overview

The M5-256/68-20VI/1 is a member of the ispMACH 5000ZE family, a complex programmable logic device (CPLD) manufactured by Lattice Semiconductor. This specific part number denotes a device with 256 macrocells, operating at a maximum frequency of 20 MHz under industrial temperature conditions (-40°C to +85°C). The 'V' suffix indicates a VQFP package, while 'I' specifies the industrial grade and '1' typically refers to the standard speed grade or revision within this series. It utilizes non-volatile flash technology for instant-on configuration.

Complex Programmable Logic Devices Feature Summary

• Non-volatile Flash architecture providing instant power-up without external configuration memory
• 256 Macrocells with high-density I/O capabilities suitable for system control applications
• Industrial temperature range operation (-40°C to +85°C) ensuring reliability in harsh environments
• Supports JTAG boundary-scan testing and in-system programming via IEEE 1149.1

Complex Programmable Logic Devices Applications

• System controller and supervisor logic for embedded systems
• Address decoding and bus bridging in industrial automation equipment
• Power management interface logic for server and storage platforms
• Replacement for legacy GALs and PALs in existing designs

Complex Programmable Logic Devices Procurement Notes

Verify the exact package marking and date code against the distributor's certificate of conformity. Ensure the ordering suffix matches the required voltage and package variant. Confirm that the supplier provides traceability documentation as required for industrial or automotive-grade components. Check for any obsolescence notices from Lattice Semiconductor prior to finalizing procurement.

Complex Programmable Logic Devices Selection Notes

Select this component when a non-volatile CPLD with moderate density (256 macrocells) is required for instant-on functionality. Compare against the ispMACH 4000ZE family if lower density suffices, or the MachXO series if higher performance or mixed-signal features are needed. Consider the VQFP package constraints regarding pin count and thermal dissipation for the target PCB layout.

Complex Programmable Logic Devices Part Context

This device belongs to the ispMACH 5000ZE family, which succeeded the ispMACH 4000ZE series. It offers improved performance and density over previous generations while maintaining compatibility with Lattice's ispLEVER design tools. The family is designed for cost-sensitive, low-power system control applications where non-volatility is critical.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements include other parts within the ispMACH 5000ZE family with equivalent or higher macrocell counts, such as the M5-256/68-10VI/1 for faster speeds. Cross-family migration to MachXO3L may be considered for enhanced security features, though pinouts and toolchains will differ significantly.