NT6868A Datasheet (Novatek) - Keyboard Controller

NT6868A, Keyboard Controller

NT6868A is a single chip micro-controller for keyboard applications.

It incorporates a 6502 8-bit CPU core, 4K bytes of ROM, and 128 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 inc

NT6868A Features

* n Built-in 6502 8-bit CPU n 2 MHz CPU operation frequency n 4K bytes of ROM n 128 bytes of SRAM n One 8-bit programmable base timer with 1 - 256 µsec interval n 29 programmable bi-directional I/O pins n 3 LED direct sink pins with internal serial resistors n Mask optional for built-in RC oscillator