SH68689 controller equivalent, keyboard controller.
* 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 i.
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.
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