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ADUC812 Dataheets PDF



Part Number ADUC812
Manufacturers Analog Devices
Logo Analog Devices
Description Multichannel 12-Bit ADC
Datasheet ADUC812 DatasheetADUC812 Datasheet (PDF)

a MicroConverter®, Multichannel 12-Bit ADC with Embedded Flash MCU ADuC812 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 8.

  ADUC812   ADUC812


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a MicroConverter®, Multichannel 12-Bit ADC with Embedded Flash MCU ADuC812 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) 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. 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. FUNCTIONAL BLOCK DIAGRAM P0.0–P0.7 P1.0–P1.7 P2.0–P2.7 P3.0–P3.7 AIN0 (P1.0)–AIN7 (P1.7) VREF CREF AIN MUX T/H 12-BIT SUCCESSIVE APPROXIMATION ADC ADC CONTROL AND CALIBRATION LOGIC DAC CONTROL DAC0 BUF DAC1 BUF 2.5V REF TEMP SENSOR BUF ADuC812 8051 BASED MICROCONTROLLER CORE 8K ؋ 8 PROGRAM FLASH EEPROM 640 ؋ 8 USER FLASH EEPROM 256 ؋ 8 USER RAM MICROCONTROLLER POWER SUPPLY MONITOR WATCHDOG TIMER UART OSC 3 ؋ 16-BIT TIMER/COUNTERS 2-WIRE SERIAL I/O SPI MUX AVDD AGND DVDD DGND XTAL1 XTAL2 RxD TxD SCLOCK MOSI/ MISO (P3.0) (P3.1) SDATA (P3.3) DAC0 DAC1 T0 (P3.4) T1 (P3.5) T2 (P1.0) T2EX (P1.1) INT0 (P3.2) INT1 (P3.3) ALE PSEN EA RESET Rev. G Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2001–2017 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com ADuC812 TABLE OF CONTENTS FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 APPLICATONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . 6 PIN CONFIGURATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56 PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . 7 TERMINOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 ADC SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Integral Nonlinearity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Differential Nonlinearity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Offset Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Full-Scale Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Signal to (Noise + Distortion) Ratio . . . . . . . . . . . . . . . . . . . . 8 Total Harmonic Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 DAC SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Relative Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Voltage Output Settling Time . . . . . . . . . . ..


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