copy of EF6809P MC6809P MC6809 6809 DIP-40

mc6821p mc6821 dip-40

The MC6821P is an integrated circuit (IC) that is part of the Motorola 6820 peripheral interface adapter (PIA) family. It is a versatile chip used in several electronic applications, especially in microprocessor-based systems. The PIA is designed to provide parallel input/output (I/O) capability, making it invaluable for interfacing with external devices. Among the key features of the MC6821P is its ability to handle parallel data transfers, generate interrupts and control peripheral devices. Typically, it consists of two ports of 8 bits each, configurable as input or output, and can be interfaced with microprocessors or microcontrollers to expand their I/O capabilities. This type of IC is used in a variety of applications, including interfacing with keyboards, displays, and other peripheral devices in electronic systems. The flexibility and functionality of the MC6821P make it a useful component in various embedded systems and digital electronics projects.