1. Products
  2. Processors and Microcontrollers
  3. Microcontrollers
  4. ARM7 Core Products
  5. ADUC7122

Data Sheet Rev. A
Circuit Note
CN 1 View All

Overview

Features and Benefits

ANALOG I/O

  • 13 external channel, 12-bit, 1 MSPS ADC
    2 channels with programmable gain
    PGA (1 to 5) input range
    IOVDD power monitor channel
    On-chip temperature monitor
    11 general-purpose inputs
  • Fully differential and single-ended modes
  • 0 V to VREF analog input range
  • 12 × 12-bit voltage output DACs
  • On-chip voltage reference: 1.2 V/2.5 V
    Buffered output reference sources for use with external circuits

MICROCONTROLLER

  • ARM7TDMI core, 16-bit/32-bit RISC architecture
  • JTAG port supports code download and debug

CLOCKING OPTIONS

  • Trimmed on-chip oscillator (±3%)
  • External watch crystal
  • External clock source up to 41.78 MHz
  • 41.78 MHz PLL with programmable divider

MEMORY

  • 126 kB Flash/EE memory, 8 kB SRAM
  • In-circuit download, JTAG-based debug
  • Software-triggered in-circuit reprogrammability

ON-CHIP PERIPHERALS

  • UART, 2×I2C and SPI serial I/O
  • 32-pin GPIO port
  • 4× general-purpose timers
  • Wake-up and watchdog timers (WDT)
  • Power supply monitor

VECTORED INTERRUPT CONTROLLER FOR FIQ AND IRQ

  • 8 Priority levels for each interrupt type
  • Interrupt on edge or level external pin inputs

POWER

  • Specified for 3 V operation
  • Active mode: 11 mA at 5 MHz, 40 mA at 41.78 MHz

PACKAGES AND TEMPERATURE RANGE

  • 7 mm × 7mm 108-ball BGA
  • Fully specified for −10°C to +95°C operation

TOOLS

  • Low cost QuickStart™ development system
  • Full third-party support

Product Details

The ADuC7122 is a fully integrated, 1 MSPS, 12-bit data acquisition system, incorporating high performance multichannel ADCs, 12 voltage output DACs, 16-bit/32-bit MCUs, and Flash/EE memory on a single chip. The ADC consists of up to 13 inputs. Four of these inputs can be configured as differential pairs with a Programmable Gain Amplifier on their front end providing a gain between 1 and 5. The ADC can operate in single-ended or differential input modes. The ADC input voltage is 0 V to VREF. A low drift band gap reference, temperature sensor, and supply voltage monitor complete the ADC peripheral set.

The DAC output range is programmable to one of two voltage ranges. The DAC outputs have an enhanced feature of being able to retain their output voltage during a watchdog or software reset sequence.

The devices operate from an on-chip oscillator and a PLL, generating an internal high frequency clock of 41.78 MHz. This clock is routed through a programmable clock divider from which the MCU core clock operating frequency is generated. The microcontroller core is an ARM7TDMI®, 16-bit/32-bit RISC machine that offers up to 41 MIPS peak performance. Eight kilobytes of SRAM and 126 kilobytes of nonvolatile Flash/EE memory are provided on chip. The ARM7TDMI core views all memory and registers as a single linear array.

The ADuC7122 contains an advanced interrupt controller. The vectored interrupt controller (VIC) allows every interrupt to be assigned a priority level. It also supports nested interrupts to a maximum level of eight per IRQ and FIQ. When IRQ and FIQ interrupt sources are combined, a total of 16 nested interrupt levels are supported.

On-chip factory firmware supports in-circuit download via the I2C serial interface port, while nonintrusive emulation is also supported via the JTAG interface. These features are incorporated into a low cost QuickStart™ Development System supporting this MicroConverter® family. The part contains a 16-bit PWM with six output signals.

For communication purposes, the part contains 2 × I2C channels that can be individually configured for master or slave mode. An SPI¯ interface supporting both master and slave modes is also provided.

The parts operate from 3.0 V to 3.6 V and are specified over atemperature range of −10°C to +95°C. The ADuC7122 is available in a 108-Ball BGA package.

APPLICATIONS

  • Optical networking, industrial control, and automation systems
  • Smart sensors, precision instrumentation, base station systems

Product Categories

Markets and Technologies

Comparable Parts Click to see all in Parametric Search

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)

Documentation & Resources

  • View All (6)
  • Data Sheets (1)
  • Circuit Note (1)
  • Technical Articles (4)
    • Document Type

    Reference Designs (1)

    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
    ADUC7122BBCZ Material Declaration Reliability Data 108-Ball CSPBGA (7mm x 7mm x 1.4mm)
    ADUC7122BBCZ-RL Material Declaration Reliability Data 108-Ball CSPBGA (7mm x 7mm x 1.4mm)
    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.

    Select Model for PCN Information
    • ADUC7122BBCZ Production
    • ADUC7122BBCZ-RL Production

    Support & Discussions

    ADUC7122 Discussions

    RE: Programming Guide for ADuc7122
    RE: If i use a AVdd of 5V and buffer on(ADuC7122) or external reference (ADuC7023) , then can i use signals with 5V input to ADC pins as well as output of 5V from DAC pins.
    RE: I2C interfacing MAX44009 with ADuC7122
    All ADUC7122 Discussions
    ADUC7122 Contact ADI Technical Support »
    ADUC7122 Ask your question »
    ADUC7122 Contact ADI Technical Support » ADUC7122 Ask your question »

    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.

     

    Sampling


    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.

    •