Description

The NT68774UFG is a single chip micro-controller designed for keyboard applications. It features a 6502 8-bit CPU core, 5K bytes of ROM, and 160 bytes of RAM. It also includes 29 programmable bi-directional I/O pins, a programmable base timer, and various built-in features such as low voltage reset and watch-dog timer.

Specifications and 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 µsec 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

Application Scenarios

The NT68774UFG is commonly used in keyboard applications where a single chip micro-controller is required. It can be used in various electronic devices that involve keypad input functionality.

Comparison

The NT68774UFG offers several advantages such as its built-in 6502 8-bit CPU, low power consumption due to CMOS technology, and various built-in features like low voltage reset and watch-dog timer. However, it has a limited amount of ROM and RAM compared to other micro-controllers in its category.