LC4256C-75TN100I

Complex Programmable Logic Devices Overview

The LC4256C-75TN100I is a Complex Programmable Logic Device (CPLD) from the Lattice ispMACH 4000C family. It features 256 macrocells organized into 8 Logic Array Blocks (LABs) and provides 64 I/O pins within a 100-pin TQFP package. The device operates at a supply voltage of 3.3V with a maximum propagation delay of 7.5 ns and a maximum operating frequency of 322 MHz. It supports in-system programmability via JTAG and functions across an industrial temperature range of -40°C to +105°C.

Complex Programmable Logic Devices Feature Summary

• 256 Macrocells distributed across 8 LABs for high-density logic implementation
• System-in-system programmability (ISP) capability using standard JTAG interfaces
• High-speed performance with 7.5 ns max propagation delay and 322 MHz clock frequency
• Industrial temperature operation rated from -40°C to +105°C

Complex Programmable Logic Devices Applications

• Complex glue logic replacement in digital systems
• Address decoding and bus interfacing
• State machine implementation for control logic
• Protocol conversion between different data standards

Complex Programmable Logic Devices Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and moisture sensitivity level (MSL) ratings prior to surface mount assembly. Ensure proper handling procedures are followed to prevent electrostatic discharge damage during storage and installation.

Complex Programmable Logic Devices Selection Notes

Select this model when 256 macrocells and 64 I/Os are required within a 100-pin TQFP footprint. Compare against the LC4256V series if lower power consumption is critical, as the V-series typically offers reduced static current. Verify that the 3.3V I/O levels match the target system voltage requirements.

Complex Programmable Logic Devices Part Context

This part belongs to the ispMACH 4000C family, which succeeded the earlier ispMACH 4000A/B/C generations. It serves as a drop-in compatible upgrade for legacy designs requiring higher density while maintaining pinout compatibility with previous generation devices in the same package style.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-compatible replacements include the LC4256V-75TN100I, though electrical characteristics such as power consumption may differ. Cross-reference datasheets to ensure timing parameters meet specific design constraints before substitution.