[NOVATEK]

General Description

NT68P61A is a monitor component µC for auto-sync and digital controlled applications. It contains a 6502 8-bit CPU core, 256 bytes of RAM used as working RAM and stack area, 24K bytes of OTP ROM**, 14-channel 8-bit PWM D/A converters, 2-channel A/D converters for key detection saving I/O pins, one 8 bit pre-loadable base timer, internal Hsync and Vsync signals processor providing mode detection, watch-dog timer preventing system from abnormal operation, and an I2C bus interface. The LVRC enables NT68P61A operate properly.

Features

■ 40 pin DIP & 42 pin SDIP package

■ Operating Voltage Range: 4.5V to 5.5V

■ CMOS technology for low power consumption

■ Crystal oscillator or ceramic resonator* available

■ 6502 8-bit CMOS CPU core

■ 8MHz operation of frequency

■ 24K bytes of OTP (one time programming) ROM

■ 256 bytes of RAM (which stores EDID for DDC1/2B)

■ One 8-bit pre-loadable base timer

■ 14 channels of 8 bit PWM outputs:

6 channel with 5V open drain and 8 channel with 12V

open drain

■ 2 channel A/D converters with 6-bit resolution

■ 24 bi-directional I/O port pins and 1 I/P pin

■ Hsync/Vsync signal processor

■ Hardware sync signals polarity & freq. evaluator

■ Built-In I2C bus interface

■ Supporting VESA DDC1/2B function

■ Six-interrupt sources

- INTV (Vsync INT)

- INTE (External INT with rising edge trigger)

- INTMR(Timer INT )

- INTA (Slave Address Matched INT)

- INTD (Shift Register INT)

- INTS (SCL GO-LOW INT)

■ Hardware watch-dog timer function

■ Built-In Low Voltage reset circuit (LVRC)