NT6868A
Keyboard Controller
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 with an
external res...
