The Z8615 Keyboard Controller (KBC) is a member of the Z8 single-chip microcontroller family with 4 Kbytes of ROM. The device is housed in a 40-pin DIP and 44-pin PLCC package, and is manufactured in NMOS technology. The Z8615 KBC microcontroller offers fast execution, efficient use of memory, sophisticated interrupt, input/ output bit-manipulation capabilities, and easy hardware/ software system expansion along with low cost and low power consumption.