NT6880

Features:

 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 msec interval
29 programmable bi-directional I/O pins
3 LED direct sink pins
Mask optional for built-in RC oscillator with an external resistor or external ceramic resonator applied
Mask optional for DATA/CLK driving capability
Watch-dog timer reset
Built-in power-on reset
Built-in low voltage reset
CMOS technology for low power consumption
Available in 40 pin DIP package and 40 pad Chip Form


Pinout




Specifications

DC Supply Voltage . . . . . . . . . . . . . . . -0.3V to +7.0V
Input/Output Voltage . . . . .GND -0.2V to V_DD + 0.2V
Operating Ambient Temperature . . . . . .0 to +70
Storage Temperature . . . . . . . . . . . .-55 to +125
Operating Voltage (V_DD) . . . . . . . . . . .+4.5V to 5.5V


Description

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 includes a built-in low voltage reset, a 4MHz RC oscillator requiring an externally applied resistor or a 4MHz ceramic resonator and a watch-dog timer that prevents system standstill.