1. Products
  2. Processors and Microcontrollers
  3. Microcontrollers
  4. Precision Microcontrollers
  5. ADuCM322


Features and Benefits

  • Analog input/output
    • Multichannel, 12-bit, 1 MSPS analog-to-digital converter (ADC)
      • Up to 16 ADC input channels
      • 0 V to VREF analog input range
      • Single-ended modes
      • AVDD and IOVDD monitors
    • 12-bit voltage output digital-to-analog converters (VDACs)
      • 8 VDACs with a range of 0 V to 2.5 V or AVDD outputs
    • Voltage comparator
  • Microcontroller
    • ARM Cortex-M3 processor, 32-bit RISC architecture
    • Serial wire port supports code download and debug
  • Clocking options
    • 80 MHz phase-locked loop (PLL) with programmable divider
    • Trimmed on-chip oscillator (±3%)
    • External 16 MHz crystal option
    • External clock source up to 80 MHz
  • Memory
    • 2 × 128 kB independent Flash/EE memories
    • 10,000 cycle Flash/EE endurance
    • 20-year Flash/EE retention
    • 32 kB SRAM
  • Software triggered in-circuit reprogrammability via management data input/output (MDIO)
  • On-chip peripherals
    • MDIO slave up to 4 MHz
    • 2 × I2C, 2 × SPI, UART
    • Multiple general-purpose input/output (GPIO) balls: 3.6 V compliant
    • 7 × 1.2 V compatible when used for MDIO
    • 32-element programmable logic array (PLA)
    • 3 general-purpose timers
    • Wake-up timer
    • Watchdog timer
    • 16-bit pulse width modulator (PWM)
  • Power
    • Supply range: 2.9 V to 3.6 V
    • Flexible operating modes for low power applications
  • Packages and temperature range
    • 6 mm × 6 mm, 96-ball CSP_BGA package
    • Fully specified for −40°C to +105°C ambient operation
  • Tools
    • QuickStart development system
    • Full third-party support

Product Details

The ADuCM322 is a fully integrated, single package device that incorporates high performance analog peripherals together with digital peripherals controlled by an 80 MHz ARM® Cortex™-M3 processor and integral flash for code and data.

The ADC on the ADuCM322 provides 12-bit, 1 MSPS data acquisition on up to 16 input balls. Additionally, chip temperature and supply voltages can be measured.

The ADC input voltage range is 0 V to VREF. A sequencer is provided, which allows a user to select a set of ADC channels to measure in sequence without software involvement during the sequence. The sequence can optionally repeat automatically at a user selectable rate. Up to eight VDACs are provided with output ranges that are programmable to one of two voltage ranges.

The ADuCM322 can be configured so that the digital and analog outputs retain their output voltages through a watchdog or software reset sequence. Thus, a product can remain functional even while the ADuCM322 is resetting itself.

The ADuCM322 has a low power ARM Cortex-M3 processor and a 32-bit RISC machine that offers up to 100 MIPS peak performance. Also integrated on-chip are 2 × 128 kB Flash/EE memory blocks and 32 kB of SRAM. The flash comprises two separate 128 kB blocks supporting execution from one flash block and simultaneous writing/erasing of the other flash block.

The ADuCM322 operates from an on-chip oscillator or a 16 MHz external crystal and a PLL at 80 MHz. This clock can optionally be divided down to reduce current consumption. Additional low power modes can be set via software. In normal operating mode, the ADuCM322 digital core consumes about 300 μA per MHz.

The device includes an MDIO interface capable of operating at up to 4 MHz. The capability to simultaneously execute from one flash block and write/erase the other flash block makes the ADuCM322 ideal for 10G, 40G, and 100G optical applications. In addition, the nonerasable kernel code plus flags in user flash provide assistance by allowing user code to robustly switch between the two blocks of user flash code and data spaces.

The ADuCM322 integrates a range of on-chip peripherals that can be configured under software control, as required in the application. These peripherals include 1 × UART, 2 × I2C, and 2 × SPI serial input/output communication controllers, GPIO, 32-element PLA, three general-purpose timers, plus a wake-up timer and system watchdog timer. A 16-bit PWM with seven output channels is also provided.

GPIO balls on the device power up in high impedance input mode. In output mode, the software chooses between open-drain mode and push-pull mode. The pull-up resistors can be disabled and enabled in software. In GPIO output mode, the inputs can remain enabled to monitor the balls. The GPIO balls can also be programmed to handle digital or analog peripheral signals; in such cases, the ball characteristics are matched to the specific requirement.

A large support ecosystem is available for the ARM Cortex-M3 processor to ease product development of the ADuCM322. Access is via the ARM serial wire debug port (SW-DP). On-chip factory firmware supports in-circuit serial download via MDIO. These features are incorporated into a QuickStart™ development system, supporting this precision analog microcontroller family.


  • Optical networking

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Tools & Simulations

Design Tools

ADuCM322 CMSIS Pack (Rev. 1.1.0)

Download this file to add support for the ADuCM322 to Keil uVision.

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.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
ADUCM322BBCZ Material Declaration Reliability Data 96-Ball CSPBGA (6mm x 6mm)
ADUCM322BBCZ-RL Material Declaration Reliability Data 96-Ball CSPBGA (6mm x 6mm)
ADUCM322BBCZI Material Declaration Reliability Data 96-Ball CSPBGA (6mm x 6mm)
ADUCM322BBCZI-RL Material Declaration Reliability Data 96-Ball CSPBGA (6mm x 6mm)
Wafer Fabrication Data

PCN-PDN Information

Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

Sample & Buy

Ordering FAQs

See our Ordering FAQs for answers to questions about online orders, payment options and more.


Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Price Table Help


Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

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.