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→你的位置：上进服务>>单片机博览>>NTK>>NT6865 NTK 8 Bit→ NT68P62 NT6861 NT6861B NT6862 NT6865 NT68F62 NT68P61A NT6865   8-Bit Microcontroller for Monitor NT6865   Feature CMOS technology for low power consumption Power supply Operating voltage range : 4.5V to 5.5V Built-in 3.3V regulator 8031 8-bit CMOS Micro-Processor (uP) core Intel 8031 architecture 256-byte Internal DATA Memory Two 16-Bit Timer/Counters Fully duplex UART 5-vector interrupt structure with two programmable priority levels High level C-language for the F/W development On-Chip Oscillator ?12 MHz operating frequency Reset External Reset Pin Low-Voltage Reset Watch-Dog Timer Reset Program memory 32K bytes of Masked ROM 512 Bytes On-Chip RAM Extended 256-byte Internal DATA Memory of uP 8031 External 256-bytes DATA Memory for Hardware DDC Port A/D Converter 7-Bit resolution 4 selectable Input channels Conversion Range ?Absolutely Monotonic linear from GND to VCC Conversion time ?12us PWM D/A Converter 8-Bit resolution 10 selectable output channels 6 channels with 5V Push-Pull Structure 4 channels with 5V Open-Drain Structure 34 Selectable General Purpose I/O Pins Interrupts ?5-vector interrupt structure with two programmable priority levels for uP F8031 TF0: Timer/Counter 0 Overflow Interrupt TF1: Timer/Counter 1 Overflow Interrupt RI+TI: UART Interrupts INT0: Sync Processor Interrupts INT1 External Interrupts: INTE0 & INTE1 Invalid Program ROM Address interrupt IIC-Bus Port Interrupts Sync Processor Unit Signal Type ?Separate Sync, Composite Sync & Digital-Level Sync-On-Green（SOG） Powerful Polarity detection for HSYNCI and VSYNCI HSYNCO/VSYNCO polarity-controlled outputs Fast Auto-Mute function Half frequency I/O function Timer/Counters with 2-lay content latches for counting sync period/frequency ?stable results can be read Clamp pulse output Clamp pulse output at either the leading edge or trailing edge of HSYNC Selectable Clamp pulse width Selectable pulse output polarity Free-run sync generator Test pattern generator DDC Port Pure hardware solution for VESA DDC1/2B Selectable 128/256 Bytes EDID-Buffer for hardware DDC port IIC-bus One built-in master/slave I2C bus interfaces support VESA 2Bi/2B+ SCL Speed Up to 400Kbps Package 42-Pin S-DIP General Description The NT6865 is an 8031 CPU core embedded micro-controller, which is design for high-performance monitor control application. It contains an 8-bit 8031 micro-controller, on-chip 32K-byte mask program ROM, 512-byte internal data memory, four 7-bit resolution A/D Converter, 10-channel 8-bit resolution PWM DAC, two16-bit timer/counters, and a UART. Except those, the N6865 have an internal SYNC processor, hardware DDC solution, and VESA 2Bi/2B+ master/slave I2C bus interface. Those functions can help the user to develop a monitor application as soon as possible.