NT6880 Datasheet (ETC) - Keyboard Controller

NT6880, Keyboard Controller

The NT6880 is a single chip micro-controller for keyboard applications.

It incorporates a 6502 8-bit CPU core, 5K 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 preloadable base timer.

Additionally, it incl

NT6880 Features

* T T T T T T T Built-in 6502 8-bit CPU 2 MHz CPU operation frequency 5K 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 T T T T T T T Mask optional for built-in RC oscillator with an externa