SH68689 Description
SH68689 is a single chip micro-controller for keyboard 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.
SH68689 Key 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 for DATA/CLK and I/O Port driving capability