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Overview

Features and Benefits

  • ANALOG I/O
    • 8-channel, 247 kSPS 12-bit ADC
      DC performance: ±1 LSB INL
      AC performance: 71 dB SNR
    • DMA controller for high speed ADC-to-RAM capture
    • 2 12-Bit (monotonic) voltage output DACs
    • Dual output PWM/Σ-Δ DACs
    • On-chip temperature sensor function ±3C
    • On-chip voltage reference
  • Memory
    • 62 kBytes on-chip Flash/EE program memory
    • 4 kBytes on-chip Flash/EE data memory
    • Flash/EE, 100 yr retention, 100 kCycles endurance
    • 2304 bytes on-chip data RAM
  • 8051 based core
    • 8051 compatible instruction set (16 MHz max)
    • 12 interrupt sources, 2 priority levels
    • Dual data pointer
    • Extended 11-bit stack pointer
  • See data sheet for additional features

Product Details

The ADuC831 is a fully integrated 247 kSPS data acquisition system incorporating a high performance self-calibrating multi-channel 12-bit ADC, dual 12-bit DACs, and programmable 8-bit MCU on a single chip.

The microcontroller core is an 8052, and therefore 8051-instruction-set compatible with 12 core clock periods per machine cycle. 62 kBytes of nonvolatile Flash/EE program memory are provided on-chip. Four kBytes of nonvolatile Flash/EE data memory, 256 bytes RAM and 2 kBytes of extended RAM are also integrated on-chip.

The ADuC831 also incorporates additional analog functionality with two 12-bit DACs, power supply monitor, and a band gap reference. On-chip digital peripherals include two 16-bit Σ-∆ DACs, dual output 16-bit PWM, watchdog timer, time interval counter, three timers/counters, Timer 3 for baud rate generation and serial I/O ports (I2C, SPI and UART).

On-chip factory firmware supports in-circuit serial download and debug modes (via UART), as well as single-pin emulation mode via the EA pin. The ADuC831 is supported by QuickStart™ and QuickStart Plus development systems featuring low cost software and hardware development tools. 

The part is specified for 3 V and 5 V operation over the extended industrial temperature range, and is available in a 52-lead plastic quad flatpack package and in a 56-lead chip scale package.

Applications

  • Optical networking—laser power control
  • Base station systems
  • Precision instrumentation, smart sensors
  • Transient capture systems
  • DAS and communications systems

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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.

Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (2)
  • Application Notes (13)
  • User Guides (2)
  • Technical Articles (1)
    • Document Type
    Application Notes

    Software & Systems Requirements

    Code Examples

    ADuC831 Code Examples

    Assembler Code

    C Code

    C Library

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

    ADUC831 Material Declaration
    Quality And Reliability
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    PCN-PDN Information

    Select Model
    • ADUC831BCPZ Production
    • ADUC831BCPZ-REEL Production
    • ADUC831BSZ Production
    • ADUC831BSZ-REEL Production

    Support & Discussions

    ADUC831 Discussions

    RE: ADUC841 Serial Downloader (WSD) error code 4
    13 week(s) ago in 8052 Core Products
    RE: ADuC831
    RE: What should be the address offset for the Intel hex file for the 4 Kb data area in serial download mode for ADuC831?
    All ADUC831 Discussions
    ADUC831 Contact ADI Technical Support »
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    ADUC831 Contact ADI Technical Support » ADUC831 Ask your question »

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