ISPLSI 2128VE-135LT100I

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Complex Programmable Logic Devices (CPLDs) are a key component of the Field Programmable Gate Array (FPGA) family. The ISPLSI 2128VE-135LT100I is a low-power, single-supply flash-based CPLD, designed to provide designers with the highest logic capacity and density available in a non-volatile, single-package integrated chip. The device offers the flexibility of in-circuit reprogramming, making it ideal for a wide range of embedded control and general logic functions.

The ISPLSI 2128VE-135LT100I CPLD architecture is based on a 32-bit interleaved FPGA array, consisting of two independent 32-bit sub-arrays. The device has 128 macrocells, each containing four 16-bit registers. Each macrocell can be configured either as direct AND/OR logic, or as a programmable logic element (PLE). Unlike other CPLD architectures, the ISPLSI 2128VE-135LT100I does not require dedicated I/O cells for logic functions, which eliminates the need for two or more multi-bit registers for each macrocell.

The ISPLSI 2128VE-135LT100I can be programmed to perform a wide array of embedded control and general logic functions, including microprocessor interface, digital signal processing, serial communications, and power management. It also supports numerous I/O voltages and configurations, including 5V TTL logic levels, as well as 3.3V, 2.5V and 1.8V logic levels. The device is also capable of sophisticated real-time control functions, such as digital and analog input/output and pulse-width modulator (PWM) controls. Additionally, it supports dual-port RAM and ROM functions, allowing the user to implement complex algorithms.

The great advantage of the ISPLSI 2128VE-135LT100I CPLD is that it can be programmed in-circuit and does not require dedicated external programming hardware. This greatly reduces the associated costs and simplifies the design process. In addition, the device requires a minimal number of external components and is IO-compatible with other standard 5V components, allowing for easy integration into existing designs. This makes the device an ideal choice for a wide range of applications, such as consumer electronics, automotive control systems, industrial process control and medical instrumentation.

The working principle of the ISPLSI 2128VE-135LT100I CPLD is very straightforward. The device is programmed using a series of logic equations, which can be written in either Verilog or VHDL. Once programmed, the device stores the data in its non-volatile flash memory, so it can retain its programming in the event of power loss. Once the data is stored, the device will execute the programmed instructions each time it is clocked, in a self-replicating loop.

In conclusion, the ISPLSI 2128VE-135LT100I CPLD is a highly flexible and cost-effective solution for a wide range of embedded control and general logic applications. Its low-power, in-circuit reprogrammable design enables designers to quickly and easily modify existing designs and reduce the cost of development. Its wide range of configurable I/O voltages and configurations make it ideal for a variety of applications, including automotive control systems, industrial process control and medical instrumentation. Its straightforward working principle makes it easy to program and maintain.

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