GENERAL DESCRIPTION
The ADuC814 is a fully integrated 247 kSPS, 12-bit data acquisition system incorporating a high performance multichannel ADC, an 8-bit MCU, and program/data Flash/EE memory on a single chip.

FEATURES
   ANALOG I/O
      6-channel 247 kSPS ADC
         12-bit resolution
         ADC high speed data capture mode
         Programmable reference via on-chip DAC for low
            level inputs, ADC performance specified to VREF = 1 V
      Dual voltage output DACs
         12-bit resolution, 15 µs settling time
   Memory
      8 kbytes on-chip Flash/EE program memory
      640 bytes on-chip Flash/EE data memory
      Flash/EE, 100 year retention, 100 kcycle endurance
      3 levels of Flash/EE program memory security
      In-circuit serial downlaod (no external hardware)
      256 bytes on-chip data RAM
   8051 based core
      8051 compatible instruction set
      32 kHz external crystal,
         on-chip programmable PLL (16.78 MHz max)
      Three 16-bit timer/counters
      11 programmable I/O lines
      11 interrupt sources, 2 priority levels
   Power
      Specified for 3 V and 5 V operation
      Normal: 3 mA @ 3 V (core CLK = 2.1 MHz)
      Power-down: 15 µA (32 kHz oscillator running)
   On-chip peripherals
      Power-on reset circuit (no need for external POR device)
      Temperature monitor (±1.5°C accuracy)
      Precision voltage reference
      Time interval counter (wake-up/RTC timer)
      UART serial I/O
      SPI®/I2C® compatible serial I/O
      Watchdog timer (WDT), power supply monitor (PSM)
   Package and temperature range
      28-lead TSSOP 4.4 mm × 9.7 mm package
      Fully specified for −40°C to +125°C operation

APPLICATIONS
   Optical networking—laser power control
   Base station systems—power amplifier bias control
   Precision instruments, smart sensors
   Battery-powered systems, precision system monitors