ADUC8  -  Series DataSheet
ADuC812  -  MicroConverter?, Multichannel 12-Bit ADC with Embedded Flash MCU  -  Analog Devices  -  8051

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, and in a 56-lead, chip scale package.