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| NT6862 8-Bit Microcontroller
for Monitor |
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| Feature |
- 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/24K/16K bytes of ROM
- 512 bytes of RAM
- 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 which includes hardware
sync signals polarity detection and frequency
counters with 2 sets of Hsync counting intervals
- Hsync/Vsync polarity controlled output,
5 selectable free run output signals and
self-test patterns, auto-mute function,
half freq. I/O function
- Two built-in IIC bus interfaces support
VESA DDC1/2B+
- 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
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| General Description |
The NT6862 is a new generation monitor
for auto-sync and digital control applications.
Particularly, this chip supports various and
efficient functions to allow users to easily
develop USB monitors. It contains the 6502
8-bit CPU core, 512 bytes of RAM used as working
RAM and stack area, 32K bytes of OTP ROM,
13-channels of 8-bit PWM D/A converters, 4-channel
A/D converters for key detection which save
I/O pins, one 8-bit pre-loadable base timer,
internal Hsync and Vsync signals processor,
a Watch-dog timer which prevents the system
from abnormal operation, and two IIC bus interfaces.
The user can store EDID data in the 128 bytes
of RAM for DDC1/2B, so that user can reduce
a dedicated EEPROM for EDID. A Half frequency
output function can save external one-shot
circuit. These designs are committed to reduce
component cost. The 42 pin S-DIP IC provides
two additional I/O pins - port40 & port41,
Part number NT6862U represents the S-DIP IC.
For future reference, port40 & port42
are only available for the 42 pin S-DIP IC.
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