LC4256V-75FTN256BC

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The LC4256V-75FTN256BC is a member of the family of Complex Programmable Logic Devices (CPLDs) from Lattice Semiconductor. CPLDs provide a higher level of logic integration than other programmable logic devices (such as FPGAs), providing a less costly solution to those systems requiring relatively lower levels of integration.The LC4256V-75FTN256BC is a 5ns CPLD with 256-macrocells, distributed RAM, and up to 150MHz system clock speed. Its unique architecture provides fast and accurate device implementation and debug. It includes a wide range of features such as row/column interconnect, register banking, and distributed RAM.The LC4256V-75FTN256BC CPLD is well-suited to a variety of system applications which involve low-cost, high-density logic. Typical applications include system interface, glue logic, and embedded memory applications. From the perspective of system-level design, the LC4256V-75FTN256BC is fast, low cost and efficient. It can implement simple to complex designs and generate results usually in a fraction of the time required for ASIC design. For example, it can be used to implement microcontroller peripherals, data and communication buses, storage, programmable logic functions and memory, and even to provide hardware co-processing.In terms of its internal working principle, the LC4256V-75FTN256BC can be divided into multiple sections. It contains four slices, one main RAM block, two I/O blocks, four input stage blocks, four dynamic drive blocks, and eight I/O cells. Each slice contains four logic blocks and the main RAM block contains sixteen separate RAM cells. The logic blocks contain either four look-up tables (LUTs), sixteen latches, or seven LUTs and two latches. The I/O blocks contain sixteen I/O cells, including four daughter cells and twelve I/O cells. The input stage blocks contain sixteen I/O cells, including two daughter cells and fourteen I/O cells. The dynamic drive blocks contain two I/O cells and two daughter cells. Each I/O cell has a dedicated internal 32-bit look-up table with 16 inputs and 16 outputs corresponding to the stored value. This look-up table can be used to pre-select the I/O cell output value, driving the output to the specified logic value, without external wiring.The LC4256V-75FTN256BC also has advanced low power modes. These include dynamic power down, quasi-static power down, partial reconfiguration and instant-on options. Its flexible design enables easy system integration and complexity reduction.Finally, the LC4256V-75FTN256BC supports development tools such as the Lattice iCEcube2 design software, providing an efficient and convenient design platform. The device supports both in-system and in-circuit programming using the CAN bus protocol, which allows the device to be easily incorporated into the embedded systems requiring real-time programming. In summary, the LC4256V-75FTN256BC is a highly integrated, low cost, low power, and fast CPLD device ideal for complex programmable logic applications. Its wide range of features, high performance and versatility make it an excellent choice for embedded systems.

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