ADUC812BSZ

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 3V and 5V operation over the industrial temperature range and is available in a 52-lead, plastic quad flatpack package. 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 3V and 5V Operation Normal, Idle, and Power-Down Modes On-Chip Peripherals UART and SPP 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)