Lattice Semiconductor Corporation LC4256V-5T176I

Mfr. Part

LC4256V-5T176I

Manufacturer

Lattice Semiconductor. Y-IC is a quality distributor of Lattice Semiconductor and we will provide customers with the best products and services

Detailed Description

A 256-macrocell CPLD from the Lattice ispMACH 4000V series, optimized for control and glue logic. Runs on 3.0 to 3.6 V internal supply. Delivers 5 ns max propagation delay for fast, deterministic timing. In-system programmable via standard JTAG, with nonvolatile configuration for immediate power-up operation. Offers 128 user I/O pins and 16 logic blocks in a compact 176-pin TQFP package. Rated for industrial junction temperature from minus 40 to 105 degrees Celsius. Surface-mount construction. Base product number LC4256

Key Features

256 macrocells organized into 16 logic blocks

128 user I/O for high connectivity

In-system programmable via IEEE 1149.1 JTAG

3.0 to 3.6 V internal supply for 3.3 V systems

5 ns max tpd for fast logic paths

Industrial temperature range minus 40 to 105 degrees Celsius junction

Surface-mount 176-pin TQFP LQFP footprint, 24 x 24 mm body

Nonvolatile configuration for instant power-up operation

Multiple global clocks and product-term based logic for flexible timing

Mature tool support and extensive application notes from Lattice

Key Advantages

Deterministic timing simplifies design and verification for control logic

High I/O count enables complex interfacing and bus bridging without additional ICs

Easy field updates and reprogramming through JTAG, no external programmer needed

Robust operation in harsh industrial environments with wide temperature range

Nonvolatile, instant-on behavior avoids external configuration memory and speeds system startup

Compact package saves PCB space while maintaining high pin count

Stable 3.3 V operation fits common embedded platforms

Packaging

Type TQFP LQFP, 176 leads, plastic encapsulation, leadframe construction

Body size 24 mm x 24 mm square, low-profile package height

Pin configuration 176 total pins with 128 user I/O, distributed power and ground pins, dedicated JTAG pins, global clock inputs

Mounting Surface mount, compatible with standard SMT assembly processes

Tray packaging for production handling

Thermal characteristics industrial junction temperature rating minus 40 to 105 degrees Celsius. For detailed thermal resistance values and derating, refer to the datasheet and your board layout

Electrical properties internal supply 3.0 to 3.6 V, 5 ns max propagation delay, in-system programmable interface via JTAG, typical 3.3 V LVTTL LVCMOS style I/O. Consult the datasheet for supported I/O standards, drive strengths, and timing

Lifecycle

The ispMACH 4000V family is mature and widely used. Actual lifecycle status and lead times can vary by speed grade and package

Equivalent or alternative models within the same family that are commonly considered

- LC4256V-7T176I slower 7.5 ns speed grade, same package and I O count

- LC4256V-10T176I slower 10 ns speed grade, same package and I O count

- LC4256V-5T176C commercial temperature grade, same electrical core and package

- Lead-free and alternative finish variants may be available in the LC4256V family. Confirm exact suffix options with sales

Migration alternatives not pin compatible but functionally similar

- Lattice ispMACH 4000ZE 256-macrocell class for lower power applications

- Lattice MachXO2 MachXO3 families for higher integration and modern toolchains

If you need pin-for-pin equivalents, lead-free versions, or more alternatives, please contact our sales team via our website for real-time guidance

Key Application Areas

Industrial control logic and state machines

Glue logic between CPUs, peripherals, and buses

Interface adaptation and protocol bridging for legacy systems

I O expansion, decoding and encoding, and address mapping

Power sequencing, reset control, and timing supervision

Memory control and arbitration for SRAM, Flash, and parallel interfaces

Test access, boundary scan, and system debug via JTAG

Communications equipment, instrumentation, and embedded systems requiring fast, deterministic logic

Datasheet

Our website hosts the most authoritative datasheet for LC4256V-5T176I. Download the datasheet on this page to get full specifications, thermal and electrical details, pinouts, and design guidelines

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