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ADUC7126:  Precision Analog Microcontroller, 12-Bit Analog I/O, Large Memory, ARM7TDMI MCU with Enhanced IRQ Handler

Product Details

Product Status:Recommended for New Designs

The ADuC7124/ADuC7126 is a fully integrated, 1 MSPS, 12-bit data acquisition systems incorporating high performance multichannel ADCs, 16-bit/32-bit MCUs, and Flash/EE memory on a single chip. The ADC consists of up to 12 single-ended inputs. An additional four inputs are available but are multiplexed with the four DAC output pins. 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 voltage comparator complete the ADC peripheral set. The DAC output range is programmable to one of three 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, which offers up to 41 MIPS peak performance. Thirty-two kilobytes of SRAM and 126 kB of nonvolatile Flash/EE memory are provided on-chip. The ARM7TDMI core views all memory and registers as a single linear array.

The ADuC7124 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 UART serial interface port or the I2C 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. Thirdly, 2× UART channels are provided. Each UART contains a configurable 16-bit FIFO with the receive and transmit buffers.

The parts operate from 2.7 V to 3.6 V and are specified over an industrial temperature range of −40°C to +125°C. When operating at 41.78 MHz, the power dissipation is typically 120 mW. The ADuC7124 is available in either 64-lead LFCSP or 80-lead LFQFP packages.


Applications
  • Industrial control and automation systems
  • Smart sensors, precision instrumentation
  • Base station systems, optical networking
  • Patient monitoring

FEATURES and BENEFITS

Analog I/O

  • Multichannel, 12-bit, 1 MSPS ADC
    Up to 16 ADC channels
  • Fully differential and single-ended modes
  • 0 V to VREF analog input range
  • 12-bit voltage output DACs
    Up to 4 DAC outputs available
  • On-chip voltage reference
  • On-chip temperature sensor (±3°C)
  • Voltage comparator

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 44 MHz
  • See data sheet for additional features

Functional Block Diagram for ADuC7126

Documentation

Title Content Type File Type
ADuC7124/ADuC1726: Precision Analog Microcontroller, 12-Bit Analog I/O, Large Memory, ARM7TDMI MCU with Enhanced IRQ Handler Datasheet (Rev C, 05/2012) (pdf, 1264 kB) Data Sheets PDF
CN0343: Ultrasonic Distance Measurement  (pdf, 350 kB) Circuit Note 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
Full-Featured Pedometer Design Realized with 3-Axis Digital Accelerometer  (pdf, 598 kB)
Analog Dialogue, June 2010
Analog Dialogue PDF
Full-Featured Pedometer Design Realized with 3-Axis Digital Accelerometer  (pdf, 598 kB)
Analog Dialogue, June 2010
Technical Articles PDF
Human Fall Detection Using New MEMS Accelerometer Technology
For humans, an unobserved fall can have very serious consequences. Statistics show that the majority of serious consequences are not the direct result of falling, but rather are due to a delay in assistance and treatment. Post-fall consequences can be greatly reduced if relief personnel can be alerted in time.
(ECN, December 9, 2009)
Technical Articles HTML
Simplifying Design of Industrial Process-Control Systems with PLC Evaluation Boards (Part 1 of 2)
PLC evaluation board applications for industrial process-control systems are diverse, ranging from simple traffic control to complex electrical power grids, from environmental control systems to oil-refinery process control.
(Industrial Control DesignLine, 8/24/09)
Technical Articles HTML
Low Power, Low Cost, Wireless ECG Holter Monitor Technical Articles HTML
Impedance Measurement Blood Analysis Systems Technical Articles HTML
Integrated Route Taken to Pulse Oximetry
by Aude Richard and Brian Moss, Analog Devices, Inc. (EE Times, 12/6/2004)
Technical Articles HTML
Precision Analog Microcontroller Simplifies Optical Transceiver Design  (pdf)
by Eamon Neary and Nobuhiro Matsuzoe, Analog Devices, Inc. (Information Quarterly, Volume 3, Number 2, 2004)
Technical Articles PDF
Industrial ICs
Industrial ICs Solutions Bulletin, Volume 10, Issue 8
Solutions Bulletins HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
Development Tools Software Configurable Products 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.

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Price, packaging, availability

ADUC7126 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADUC7126BSTZ126 Status: Production 80 ld LQFP (12x12x1.4mm) 80 Ind Tray, 119 $7.20 $6.34 Y  Material Info PCN Purchase Sample
ADUC7126BSTZ126-RL Status: Production 80 ld LQFP (12x12x1.4mm) 80 Ind Reel, 1000 - $6.34 Y  Material Info PCN Purchase
ADUC7126BSTZ126I Status: Production 80 ld LQFP (12x12x1.4mm) 80 Ind Tray, 119 $7.20 $6.34 Y  Material Info PCN Purchase Sample
ADUC7126BSTZ126IRL Status: Production 80 ld LQFP (12x12x1.4mm) 80 Ind Reel, 1000 - $6.34 Y  Material Info PCN Purchase
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.

ADuC7126 QuickStart Plus Development System
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADUC7126QSPZ Status: Production ADuC7126 Quickstart plus development system $159.00 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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