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ADUC834:  Precision Analog Microcontroller: 1MIPS 8052 MCU + 62kB Flash + 16/24-Bit ADC + 12-Bit DAC

Product Details

The ADuC834 MicroConverter® is a fully integrated 24-bit data acquisition system-on-a-chip. Like all of ADI's MicroConverter products, it features precision A/D & D/A conversion and a Flash microcontroller on a single chip.

The ADuC834 is 100% backward compatible (hardware and software) with the ADuC824. It is available in 52-pin PQFP or 56-pin CSP packages and operates on a 3V or 5V power supply.


  • 2-Channel, Differential Input, Programmable Gain, Self-Calibrating, 24-Bit Primary ADC
  • 3-Channel, Single-Ended Input, Self Calibrating, 16-Bit Auxiliary ADC
  • Single 12-Bit Rail-to-Rail Voltage-Output DAC
  • Two Flexible PWM Outputs
  • Industry Standard 8052 Microcontroller
  • 62K-Byte In-Circuit Re-Programmable Flash Program Memory
  • 4K-Byte Read/Write Accessible Non-Volatile Flash Data Memory
  • 2K-Byte SRAM (In Addition to 256-Bytes in 8052 Core)
  • Precision Temperature Sensor
  • Programmable PLL Clock &
    Low Power Operating Modes
  • Voltage Reference, Serial Interface
    Ports, Watchdog Timer, Power Supply
    Monitor, Power-On-Reset (POR), etc
  • Embedded Download/Debug &
    Emulation Features

Functional Block Diagram for ADUC834


Title Content Type File Type
ADuC834: MicroConverter® Dual 16-/24- Bit SIgma-Delta ADCs with Embedded 62KB Flash MCU Data Sheet (Rev A, 04/2003) (pdf, 1572 kB) Data Sheets PDF
ADuC834: Silicon Errata Sheet  (Rev F, 04/2009) (pdf, 233 kB) Data Sheets PDF
AN-1139: Understanding the Parallel Programming Protocol  (pdf, 174 kB) Application Notes PDF
AN-1074: Understanding the Serial Download Protocol (Formerly uC004)  (pdf, 245 kB) Application Notes PDF
UC-018: Uses of the Time Interval Counter  (pdf, 632 kB) Application Notes PDF
UC-001: MicroConverter® 2C® Compatible Interface  (pdf, 126 kB) Application Notes PDF
UC-002: Developing in C with the Keil uVision2 IDE  (pdf, 0 kB) Application Notes PDF
UC-007: User Download (ULOAD) Mode  (pdf, 0 kB) Application Notes PDF
AN-759: Expanding the Number of DAC Outputs on the ADuC8xx and ADuC702x Families (uC012)  (pdf, 112 kB) Application Notes PDF
AN-644: Frequency Measurement Using Timer 2 on a MicroConverter ® (uC013)  (pdf, 62 kB)
... This application note describes the implementation of a single pin measurement of frequencies up to 500 kHz using the Timer 2 counter input pin.
Application Notes PDF
AN-645: Interfacing an HD44780 Character LCD to a MicroConverter ® (uC014)  (pdf, 97 kB)
... There is a vast array of LCD displays available.Fortunately,a majority of them comply with the HD44780U standard.This standard refers to the LCD controller chip that accepts data from the MicroConverter and communicates with the LCD screen.
Application Notes PDF
AN-282: Fundamentals of Sampled Data Systems  (pdf, 2131 kB) Application Notes PDF
AN-660: XY-Matrix Keypad Interface to MicroConverter®  (pdf, 286 kB) Application Notes PDF
AN-709: RTD Interfacing and Linearization Using an ADuC8xx MicroConverter®  (pdf, 698 kB) Application Notes PDF
UC-009: Addressing 16MB of External Data Memory  (pdf, 173 kB) Application Notes PDF
UC-006: A 4-wire UART-to-PC Interface  (pdf, 0 kB) Application Notes PDF
UC-008: Using the ADuC834 C-library  (pdf, 290 kB) Application Notes PDF
Using Integrated Precision Analog Microcontrollers to Simplify Data Acquisition System Design
The ins and outs (the I/O) of using Analog Microcontrollers to manage data acquisition applications
Webcasts WEBCAST
ADuC834 Quick Reference Guide  (pdf, 392 kB) User Guides PDF
Integrated Route Taken to Pulse Oximetry
by Aude Richard and Brian Moss, Analog Devices, Inc. (EE Times, 12/6/2004)
Technical Articles HTML
Temperature Monitoring in Remote Systems
... Analog Devices has designed a system to meet the demanding requirements of food transporation applications.
(Sensors, October 2002)
Technical Articles HTML
8051 Microcontroller, The: Hardware, Software, and Interfacing, 2/E
by James W. Stewart and Kai Miao, DeVry Institute of Technology, Prentice Hall, 1999
Recommended Reading HTML
The 8051 Microcontroller, 3/E
by I. Scott MacKenzie, University of Guelph, Prentice Hall, 1999
Recommended Reading HTML
C and the 8051
Hardware, Modular Programming & Multitasking, 2/e

by Thomas W. Schultz, Prentice Hall PTR, 1997
Recommended Reading HTML
C and the 8051
by Thomas W. Schultz, Prentice Hall PTR, 1999
Recommended Reading HTML
Precision Analog Microcontrollers—ARM7® and 8051 Series  (pdf, 5834 kB) Overview PDF
Precision Analog Microcontrollers ARM7® and 8051 Series  (pdf)
ADI's two families of precision analog Flash microcontrollers address the growing need for integration, design ease, programmability, and precision analog performance demanded by industrial, instrumentation, communications, and automotive applications.
Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
Sigma-Delta ADC Tutorial
An interactive illustration showing the behavior of an idealized sigma-delta A/D converter.
Utilities and Conversions HTML
Development Tools Software Configurable Products HTML
ADuC834 Code Examples Code Examples HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADUC834 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADUC834BCPZ Status: Production 56 ld LFCSP (8x8mm) 56 Ind Tray, 260 $14.17 $12.47 Y  Material Info Notify Me Purchase Sample
ADUC834BCPZ-REEL Status: Production 56 ld LFCSP (8x8mm) 56 Ind Reel, 2500 - $12.47 Y  Material Info Notify Me Purchase
ADUC834BSZ Status: Production 52 ld MQFP (13.90mm width) 52 Ind Tray, 96 $14.17 $12.47 Y  Material Info PCN Purchase Sample
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADuC834 QuickStart Development System
Model Description Price RoHS View PCN/ PDN Check Inventory/
EVAL-ADUC834QSZ Status: Production ADuC834 Quickstart development system $59.00 Yes -
USB-EA-CONVZ Status: Production USB-EA Emulator $75.00 Yes -
EVAL-ADUC-CABLE1Z Status: Production UART Serial downloader cable $15.18 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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