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BUY CS82C55AZ https://www.utsource.net/itm/p/1152078.html
IC I/O EXPANDER 24B 44PLCC
Description: The CS82C55AZ is a CMOS Programmable Peripheral Interface (PPI) chip manufactured by Renesas Electronics Corporation. Features: 8-bit bidirectional data bus 4-bit control bus Programmable I/O ports Programmable interrupt control Programmable timer/counter Programmable clock generator Programmable serial I/O Low power consumption 5V CMOS compatible 44-pin PLCC package Application: The CS82C55AZ is suitable for use in a variety of applications, including industrial control, automotive, medical, and consumer electronics. It can be used to provide an interface between a microcontroller and peripheral devices, such as keyboards, displays, and printers. It can also be used to provide a serial interface for communication between two devices. (For reference only)