SH68689
Keyboard Controller
Features
Built-in 6502 8-bit CPU 2MHz CPU operation frequency 8K bytes of ROM 160 bytes of SRAM One 8-bit programmable base timer with 1 - 256 µsec interval 29 programmable bi-directional I/O pins 3 LED direct sink pins with internal serial resistors
Built-in RC oscillator with an external resistor Mask option...
