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| NT6861 8-Bit Microcontroller
for Monitor |
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| Feature |
- 40 pin DIP 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
- 4/8/12/16/24K bytes ROM are available
- 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 IIC 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
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| General Description |
NT6861 is a monitor component uC 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
ROM maximum for programming, 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 IIC bus interface. Users
can store EDID data in the 128 bytes of RAM
for DDC1/2B, so that users can save the cost
of dedicated EEPROM for EDID. Half frequency
output function can save external one-shot
circuit. All of these designs create savings
in component costs.
* The frequency deviation of ceramic resonator
has +/- 6% maximum. |
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