SH68689 Datasheet - Sino Wealth

SH68689, Keyboard Controller

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 seria

Applications

* It incorporates a 6502 8-bit CPU core, 8K bytes of ROM and 160 bytes of RAM used as working RAM and stack area. It also includes 29 programmable bi-directional I/O pins and one 8-bit pre-loadable base timer. Additionally, it includes a built-in low voltage reset, a 4MHz RC oscillator that only requ

SH68689-SinoWealth.pdf