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8 Bit MCU, MicroConverter with ADC, ADUC Family ADUC8 Series Microcontrollers, 20 MHz, 62 KB, 2 KB

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Brands: Analog Devices, Inc

Mfr.Part #: ADUC841BSZ62-5

Datasheet: ADUC841BSZ62-5 Datasheet (PDF)

Package/Case: QFP-52

Product Type: Embedded Processors & Controllers

RoHS Status:

Stock Condition: 2899 pcs, New Original

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ADUC841BSZ62-5 General Description

The ADuC841/ADuC842/ADuC843 are complete smart transducer front ends, that integrates a high performance self-calibrating multichannel ADC, a dual DAC, and an optimized single-cycle 20 MHz 8-bit MCU (8051 instruction set compatible)on a single chip.

The ADuC841 and ADuC842 are identical with the exception of the clock oscillator circuit; the ADuC841 is clocked directly from an external crystal up to 20 MHz whereas the ADuC842 uses a 32 kHz crystal with an on-chip PLL generating a programmable core clock up to 16.78 MHz.

The ADuC843 is identical to the ADuC842 except that the ADuC843 has no analog DAC outputs.

The microcontroller is an optimized 8052 core offering up to 20 MIPS peak performance. Three different memory options are available offering up to 62 kBytes of nonvolatile Flash/EE program memory. Four kBytes of nonvolatile Flash/EE data memory, 256 bytes RAM, and 2 kBytes of extended RAM are also integrated on-chip.

The parts also incorporate 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-Δ. DACs, a dual output 16-bit PWM, a watchdog timer, a time interval counter, three timers/counters, and three serial I/O ports (SPI, I2C, and UART).

On the ADuC812 and the ADuC832, the I2C and SPI interfaces share some of the same pins. For backwards compatibility, this is also the case for the ADuC841/ADuC842/ADuC843.

However, there is also the option to allow SPI operate separately on P3.3, P3.4, and P3.5, while I2C uses the standard pins. The I2C interface has also been enhanced to offer repeated start, general call, and quad addressing.

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



  • Pin compatible upgrade of ADuC812/ADuC831/ADuC832
  • Increased performance
  • Single-cycle 20 MIPS 8052 core
  • High speed 420 kSPS 12-bit ADC
  • Increased memory
  • Up to 62 kBytes on-chip Flash/EE program memory
  • 4 kBytes on-chip Flash/EE data memory
  • In-circuit reprogrammable
  • Flash/EE, 100 year retention, 100 kCycle endurance
  • 2304 bytes on-chip data RAM
  • Smaller package
  • 8 mm × 8 mm chip scale package
  • 52-lead PQFP—pin-compatible upgrade
  • Analog I/O
  • 8-channel, 420 kSPS high accuracy, 12-bit ADC
  • On-chip, 15 ppm/°C voltage reference
  • DMA controller, high speed ADC-to-RAM capture
  • Two 12-bit voltage output DACs
  • Dual output PWM Σ-Δ DACs
  • On-chip temperature monitor function
  • 8052 based core
  • 8051 compatible instruction set (20 MHz max)
  • High performance single-cycle core
  • 32 kHz external crystal, on-chip programmable PLL
  • 12 interrupt sources, 2 priority levels
  • Dual data pointers, extended 11-bit stack pointer
  • On-chip peripherals
  • Time interval counter (TIC)
  • UART, I2C®, and SPI® Serial I/O
  • Watchdog timer (WDT)
  • Power supply monitor (PSM)
  • Power
  • Normal: 4.5 mA @ 3 V (core>
  • Development tools
  • Low cost, comprehensive development system incorporating nonintrusive single-pin emulation,
  • IDE based assembly and C source debugging


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


Parameter Value Parameter Value
feature-tradename feature-data-bus-width-bit 8
feature-minimum-operating-supply-voltage-v 4.75 feature-maximum-operating-supply-voltage-v 5.25
feature-interface-type I2C/SPI/UART feature-packaging Tray
feature-rad-hard feature-pin-count 52
feature-supplier-package MQFP feature-standard-package-name1 QFP
feature-cecc-qualified No feature-esd-protection Yes
feature-escc-qualified feature-military No
feature-aec-qualified No feature-aec-qualified-number
feature-auto-motive No feature-p-pap No
feature-eccn-code EAR99 feature-svhc No
feature-svhc-exceeds-threshold No


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1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


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  • Individual packaging

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    Step5 :Packaging boxes

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All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

  • ESD
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Datasheet PDF

Preliminary Specification ADUC841BSZ62-5 PDF Download

Key points

  • The ADUC841BSZ62-5 is a microcontroller chip manufactured by Analog Devices. It is based on the 8052 architecture and features 62kB of flash memory, 2kB of RAM, and 12-bit analog-to-digital converters. The chip is known for its high performance, low power consumption, and versatile interface options. It is commonly used in various industrial and automotive applications that require precise control and monitoring capabilities.
  • Equivalent

    There are no direct equivalent products to the ADUC841BSZ62-5 chip as it is a specific microcontroller from Analog Devices. However, there are other microcontrollers available from Analog Devices and other manufacturers that may serve similar purposes or have comparable specifications.
  • Features

    The ADUC841BSZ62-5 is a small microcontroller with a 12-bit analog-to-digital converter (ADC), 8KB flash memory, and various integrated peripherals, including UART, SPI, and I²C interfaces. It operates with a supply voltage ranging from 2.7V to 5.5V, making it suitable for low-power applications.
  • Pinout

    The ADUC841BSZ62-5 is a microcontroller with 52 pins. It is used for various functions such as data acquisition, control, and processing in industrial and automotive applications.
  • Manufacturer

    The manufacturer of the ADUC841BSZ62-5 is Analog Devices, Inc. It is a semiconductor company that specializes in the design and production of integrated circuits and other electronic components.
  • Application Field

    The ADUC841BSZ62-5 microcontroller has various application areas including industrial automation, motor control, power management, and communication systems. It is especially suitable for applications where a high level of integration and low power consumption are required.
  • Package

    The ADUC841BSZ62-5 chip has a package type of LQFP (Low-Profile Quad Flat Package), a form of surface mount package. The size of the package is 10mm x 10mm.

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