ADUC812BSZ-REEL

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1. DESCRIPTION

The ADUC812BSZ-REEL 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. The programmable 8051 compatible core is supported by 8K bytes Flash/EE program memory, 640 bytes Flash/EE data memory, and 256 bytes data SRAM on-chip. Additional MCU support functions include Watchdog Timer, Power Supply Monitor, and ADC DMA functions. Thirty-two programmable I/O lines, I2C compatible SPI and Standard UART Serial Port I/O are provided for multiprocessor interfaces and I/O expansion. Normal, idle, and power-down operating modes for both the MCU core and analog converters allow flexible power management schemes suited to low power applications. The part is specified for 3 V and 5 V operation over the industrial temperature range and is available in a 52-lead, plastic quad flatpack package.

2. FEATURES

    1. 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

    2. 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

    3. 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

    4. Power

        - Specified for 3 V and 5 V Operation

        - Normal, Idle, and Power-Down Modes

    5. On-Chip Peripherals

        - UART and SPI® Serial I/O

        - 2-Wire (400 kHz I2C® Compatible) Serial I/O

        - Watchdog Timer

    6. Power Supply Monitor

3. APPLICATIONS

    1. Intelligent Sensors Calibration and Conditioning

    2. Battery-Powered Systems (Portable PCs, Instruments, Monitors)

    3. Transient Capture Systems

    4. DAS and Communications Systems

    5. Control Loop Monitors (Optical Networks/Base Stations)