GENERAL DESCRIPTION
The ADuC812 is a fully integrated 12-bit data acquisition system incorporating a high performance self-calibrating multichannel ADC, dual DAC, and programmable 8-bit MCU (8051 instruction set compatible) on a single chip.
   
FEATURES
    Analog I/O
        8-Channel, High Accuracy 12-Bit ADC
        On-Chip, 100 ppm/C Voltage Reference
        High Speed 200 kSPS
        DMA Controller for High Speed ADC-to-RAM Capture
        2 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
        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)
        3 16-Bit Timer/Counters
        High Current Drive Capability—Port 3
        9 Interrupt Sources, 2 Priority Levels
    Power
        Specified for 3 V and 5 V Operation
        Normal, Idle, and Power-Down Modes
    On-Chip Peripherals
        UART and SPI® Serial I/O
        2-Wire (400 kHz I2C® Compatible) Serial I/O
        Watchdog Timer
    Power Supply Monitor
   
APPLICATIONS
    Intelligent Sensors Calibration and Conditioning
    Battery-Powered Systems (Portable PCs, Instruments,
        Monitors)
    Transient Capture Systems
    DAS and Communications Systems
    Control Loop Monitors (Optical Networks/Base Stations)