The P8254-2 is a commonly used integrated circuit (IC) component primarily designed for microprocessor systems. It serves as a programmable interval timer and its key features make it an essential part of various applications.
One of the primary purposes of the P8254-2 is to facilitate accurate and reliable timing operations within a microprocessor system. It achieves this through its three independent 16-bit counters, each capable of being programmed individually. These counters can be configured to function either as binary counters or through an event counter mode, based on the specific requirements of the application.
The IC component has a versatile operating range, allowing it to handle various timing requirements. The counters in the P8254-2 can be programmed to operate in different modes, including the pulse and square wave modes. Pulse mode generates a single pulse, while square wave mode produces continuous pulses with a specified time period.
Moreover, the P8254-2 is equipped with an integrated programmable read-only memory (PROM). The presence of the PROM enables users to store their desired timing parameters and counter configurations directly within the IC. This feature significantly simplifies the design and programming process, making it convenient for users to implement their required timing functions.
The P8254-2 also incorporates multiple control inputs to enhance its functionality. These inputs include a Bus Interface Control (BIC) signal, which allows for easy communication between the IC and the microprocessor system
