The ADuC812 is a fully integrated 12-bit data acquisition systemincorporating a high performance self-calibrating multichannelADC, dual DAC, and programmable 8-bit MCU (8051 instructionset compatible) on a single chip.

The programmable 8051 compatible core is supported by 8Kbytes Flash/EE program memory, 640 bytes Flash/EE datamemory, and 256 bytes data SRAM on-chip.

Additional MCU support functions include Watchdog Timer,Power Supply Monitor, and ADC DMA functions. Thirty-twoprogrammable I/O lines, I²C compatible SPI and StandardUART Serial Port I/O are provided for multiprocessor interfacesand I/O expansion.

Normal, idle, and power-down operating modes for both theMCU core and analog converters allow flexible power managementschemes suited to low power applications. The part isspecified for 3 V and 5 V operation over the industrial temperaturerange and is available in a 52-lead, plastic quadflatpack package.

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)

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.