GENERAL DESCRIPTION
The ADuC812 is a fully integrated 12-bit data acquisition system incorporating a high performance self-calibrating multichannel ADC, two 12-bit DACs and programmable 8-bit (8051-compatible) MCU on a single chip.
   
FEATURES
    ANALOG I/O
        8-Channel, High Accuracy 12-Bit ADC
        On-Chip, 40 ppm/°CC Voltage Reference
        High Speed 200 kSPS
        DMA Controller for High Speed ADC-to-RAM Capture
        Two 12-Bit Voltage Output DACs
        On-Chip Temperature Sensor Function
    MEMORY
        8K Bytes On-Chip Flash/EE Program Memory
        640 Bytes On-Chip Flash/EE Data Memory
        On-Chip Charge Pump (No Ext. VPP Requirements)
        256 Bytes On-Chip Data RAM
        16M Bytes External Data Address Space
        64K Bytes External Program Address Space
    8051-COMPATIBLE CORE
        12 MHz Nominal Operation (16 MHz Max)
        Three 16-Bit Timer/Counters
        32 Programmable I/O lines
        High Current Drive Capability—Port 3
        Nine Interrupt Sources, Two Priority Levels
    POWER
        Specified for 3 V and 5 V Operation
        Normal, Idle and Power-Down Modes
    ON-CHIP PERIPHERALS
        UART Serial I/O
        2-Wire (I2C®-Compatible) and SPI® Serial I/O
        Watchdog Timer
        Power Supply Monitor
   
APPLICATIONS
    Intelligent Sensors (IEEE 1451.2-Compatible)
    Battery Powered Systems (Portable PCs, Instruments,
        Monitors)
    Transient Capture Systems
    DAS and Communications Systems