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ADUC814

Analog Devices
Part Number ADUC814
Manufacturer Analog Devices
Description Small Package 12-Bit ADC
Published Mar 23, 2005
Detailed Description MicroConverter®, Small Package 12-Bit ADC with Embedded Flash MCU ADuC814 FEATURES ANALOG I/O 6-channel 247 kSPS ADC 12-...
Datasheet PDF File ADUC814 PDF File

ADUC814
ADUC814

Overview
MicroConverter®, Small Package 12-Bit ADC with Embedded Flash MCU ADuC814 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 AIN0 AIN MUX AIN5 T/H 12-BIT ADC ADC CONTROL LOGIC DAC CONTROL LOGIC FUNCTIONAL BLOCK DIAGRAM ADuC814 DAC0 BUF DAC0 DAC1 BUF DAC1 TEMP MONITOR INTERNAL BAND GAP VREF POWERON RESET PROG.
CLOCK DIVIDER 8051-BASED MCU WITH ADDITIONAL PERIPHERALS 8 KBYTES FLASH/EE PROGRAM MEMORY 640 BYTES FLASH/EE DATA MEMORY 256 BYTES USER RAM 3 × 16-BIT TIMER/COUNTERS 1 × WAKE-UP/RTC TIMER 10 × DIGITAL I/O PINS ON-CHIP MONITORS POWER SUPPLY MONITOR WATCHDOG TIMER 02748-A-001 VREF BUF CREF OSC AND PLL UART AND SPI SERIAL I/O XTAL1 XTAL2 Figure 1.
GENERAL DESCRIPTION The ADuC814 is a fully integrated 247 kSPS, 12-bit data acquisition system incorporating a high performanc...


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