GAL16V8D-25QJ

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GAL16V8D-25QJ Application Field and Working Principle

GAL16V8D-25QJ, which stands for General Array Logic 16V8D-25QJ, is a popular device in the family of Embedded - CPLDs (Complex Programmable Logic Devices). Being an 8-pin package, this CPLD is commonly used for volatile or low-cost applications with real-time and faster timing. This device is intentionally designed to provide designers, students, and hobbyists with a cheaper option for application development, prototyping, test, and evaluation.

Overview

The GAL16V8D-25QJ combines five logic elements in a single package. It helps reduce the chip count and minimizes the design effort by providing a reprogrammable logic cell array. This CPLD uses high-density, antifuse technology, allowing it to quickly diagnose faults and thereby simplify the development process. This device also provides an I/O buffer to support up to 16 input-output pins, along with global set/reset and programmable pull-up or pull-down currents.

The GAL16V8D-25QJ is available in a 28-pin DIP (dual in-line package) package, and features 5mS maximum propagation delay and 2.5mS typical system latency. This device can work up to 3.3V or 5V supply with a peak supply current of 14mA.

Application Field

The GAL16V8D-25QJ is an ideal solution for low-cost, industrial applications. It can be used to integrate peripheral logic, bus interface logic, read/write logic, address decoding logic, counter and state machines, and basic sequential logic. It is also suitable for design applications that require fewer I/Os. This device is widely used in automotive, automotive electronics, embedded controller, audio controls, smart home appliances, and more.

Working Principle

The working principle of the GAL16V8D-25QJ complex programmable logic device (CPLD) is quite simple and easy to understand. First, the device contains a field programmable gate array (FPGA) where the logic elements are stored and configured. Once the logic configuration is programmed, it can be reused for different types of applications and projects.

Then, the device further includes a programmable interconnect where the actual logic elements are connected and interconnected with each other. This layer also provides the voltage level shifting and other features required for the device to work. Finally, the device also comprises of a built-in test logic to frequently check for operation errors.

Conclusion

In conclusion, the GAL16V8D-25QJ is a powerful and affordable CPLD device. It is widely applicable in a range of applications, including automotive, automotive electronics, embedded controller, audio controls, and smart home appliances. It also offers users with a simple and easy working principle and a useful test logic, making it a go-to device in many development projects.

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