[Novatek]

General Description
The NT68F62 is a new generation of monitor µC for autosync and digital control applications. Particularly, this chip supports various functions to allow users to easily develop USB monitors. It contains the 6502 8-bit CPU core, 512 bytes of RAM for use as working RAM and as stack area, 32K bytes of Flash memory, 13-channels of 8-bit PWM D/A converters, 4-channel A/D converters for detection of keys which can save I/O pins, one 8-bit pre-loadable base timer, an internal Hsync and Vsync signals processor and a watch-dog timer, which prevents the system from abnormal operation and two IIC bus interfaces.

Features
■ Operating voltage range: 4.5V to 5.5V
■ CMOS technology for low power consumption
■ 6502 8-bit CMOS CPU core
■ 8 MHz operation frequency
■ 32K bytes of flash memory for Multi -Times Program
■ 512 bytes of RAM
■ 2Kbytes Masked BootROM for ISP.
■ One 8-bit base timer
■ 13 channels of 8-bit PWM outputs with 5V open drain
■ 4 channel A/D converters with 6-bit resolution
■ 25 bi-directional I/O port pins (8 dedicated I/O pins)
■ Hsync/Vsync signals processor for separate & composite signals, including hardware sync signals polarity detection and freq. counters with 2 sets of Hsync counting intervals
■ Hsync/Vsync polarity controlled output, 5 selectable free run output signals and self-test patterns, automute function, half freq. I/O function
■ Two built-in IIC bus interfaces support VESA
■ Two layers of interrupt management
    NMI interrupt sources
        - INTE0 (External INT with selectable edge trigger)
        - INTMUTE (Auto Mute Activated)
    IRQ interrupt sources
        - INTS0/1 (SCL Go-low INT)
        - INTA0/1 (Slave Address Matched INT)
        - INTTX0/1 (Shift Register INT)
        - INTRX0/1 (Shift Register INT)
        - INTNAK0/1 (No Acknowledge)
        - INTSTOP0/1 (Stop Condition Occurred INT)
        - INTE1 (External INT with Selectable Edge Trigger)
        - INTV (VSYNC INT)
        - INTMR (Base Timer INT)
        - INTADC (AD Conversion Done INT)
■ Hardware watch-dog timer function
■ 40-pin P-DIP and 42-pin S-DIP packages