LC4128C-75TN128I

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Embedded - CPLDs (Complex Programmable Logic Devices) is an important type of semiconductor that has many applications. The LC4128C-75TN128I is a reprogrammable chip that belongs to this category. This article discusses the application field and working principle of LC4128C-75TN128I.

The LC4128C-75TN128I is a type of high-speed Complex Programmable Logic Devices (CPLDs) and is widely used in embedded systems, like automotive, industrial control, medical, telecom, and consumer electronics applications. It consists of 128 macro cells that can be individually programmed for logic functions such as logic gates, registers, D-type flip-flops and circuits for arithmetic-logic operations. The clock speeds of the chip may be as high as 14.2Msps, making it suitable for even high-speed operation applications.

In addition to its core features, the LC4128C-75TN128I also offers users with other features such as high speed operation, low power consumption, small package size, low pin count, and dynamic power control. It also comes with a suite of user friendly development tools, including an in-system programming (ISP) capability, layered device description (LDD) files, and an overall design Optimization application. All of these features contribute to the overall effectiveness of the chip’s application field.

Now let us look at the working principle of the LC4128C-75TN128I. It consists of Differential-In-Line (DIL) packages with a line interface consisting of eight data bits and two control bits. The eight data bits are used for data input, address, and bidirectional data transfer as well as for functional block command (FBC). The two control bits are designed for the asynchronous control of the chip’s operation by the host processor. The chip’s on-chip 64Kb program memory is stored in the form of 16k Words with the whole program stored in 256 assembly words.

Once the whole program has been written, it is loaded in the flash memory or in the configuration memory. During the execution of the program, the internal logic of the chip works in conjunction with the external interface. The external interface is used to receive the inputs and produce the outputs. The core logic, which is a combination of register, counter, state machines and multiplexers. The outputs are produced by the combinational logic and are used to control the state of the external devices. Once the task has been completed, the chip will start the cycle again.

In conclusion, the LC4128C-75TN128I is a highly versatile CPLD with many applications. It offers very high speed operation, low power consumption, and comprehensive development tools for users. Also, its core logic, combined with its external interface, makes it suitable for a variety of applications in the embedded system field.

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