LC4256ZC-75TN176I

Complex Programmable Logic Devices Overview

The LC4256ZC-75TN176I is a Complex Programmable Logic Device (CPLD) from the ispMACH 4000Z family. It features 256 macrocells, 16 Logic Array Blocks (LABs), and supports up to 128 I/O pins. The device operates within a supply voltage range of 3.0 V to 3.6 V, with a maximum operating frequency of 260 MHz and a typical propagation delay of 7.5 ns. It is housed in a 176-pin TQFP package and functions reliably across an industrial temperature range of -40°C to +105°C.

Complex Programmable Logic Devices Feature Summary

• In-system programmability via JTAG interface
• Flexible macrocell architecture with individual clock, reset, and enable controls
• Wide input gating for efficient state machine and counter implementation
• Support for multiple I/O standards including LVCMOS

Complex Programmable Logic Devices Applications

• High-speed interface bridging and protocol conversion
• Address decoding and bus arbitration in embedded systems
• State machine implementation for industrial control logic
• General-purpose digital logic replacement in legacy designs

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'ZC' against official Lattice documentation to confirm it denotes the commercial temperature grade variant, as standard naming conventions may vary. Confirm moisture sensitivity level and reflow soldering profile requirements prior to assembly. Ensure design tools support the ispMACH 4000Z family for accurate timing analysis and programming.

Complex Programmable Logic Devices Selection Notes

Select this component when a balance of moderate density and high performance is required. The 256 macrocell count suits applications needing more capacity than smaller CPLDs but less complexity than FPGAs. Consider the 7.5 ns delay for timing-critical paths. Evaluate power consumption requirements, as static current varies by temperature and voltage conditions.

Complex Programmable Logic Devices Part Context

This part belongs to the ispMACH 4000Z family, designed for low-power, high-performance applications. It utilizes non-volatile flash technology, allowing instant-on functionality without external configuration memory. The family is known for ease of use and compatibility with older GAL-based designs, facilitating migration from discrete logic solutions.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements include other members of the ispMACH 4000Z family with compatible pinouts and higher or lower macrocell counts, such as the LC4256ZC-75TQ100I for reduced footprint. Cross-family migration to the 4000V series requires verification of electrical characteristics and pin compatibility.