16-Bit Microcontrollers with Infrared Module and Optional USB

Microcontrollers with Integrated Transceiver Reduce Overall Power Consumption of System and Increase Battery Life

Please check latest availability status for a specific part variant.


The MAXQ612/MAXQ622 are low-power, 16-bit MAXQ® microcontrollers designed for low-power applications including universal remote controls, consumer electronics, and white goods. Both devices use a low-power, high-throughput, 16-bit RISC microcontroller. Serial peripherals include two universal synchronous/asynchronous receiver-transmitters (USARTs), two SPI™ master/slave communications ports, and an inter-integrated circuit (I²C) bus. The devices also incorporate an IR module with carrier frequency generation and flexible port I/O capable of multiplexed keypad control. The MAXQ622 adds a universal serial bus (USB) with integrated physical interface (PHY).

The MAXQ612/MAXQ622 include 128KB of flash memory and 6KB of data SRAM. Intellectual property (IP) protection is provided by a secure memory management unit (MMU) that supports multiple application privilege levels and protects code against copying and reverse engineering. Privilege levels enable vendors to provide libraries and applications to execute on the MAXQ612/MAXQ622, while limiting access to only data and code allowed by their privilege level.

For the ultimate in low-power battery-operated performance, the devices include an ultra-low-power stop mode (0.3µA typical). In this mode, the minimum amount of circuitry is powered. Wake-up sources include external interrupts, the power-fail interrupt, and a timer interrupt. The microcontroller runs from a wide operating voltage of 1.70V to 3.6V, and can also be powered from the USB.

Designers must have the following documents to fully use all the features of this device. The data sheet contains pin descriptions, feature overviews, and electrical specifications. Errata sheets contain deviations from published specifications. The user's guides offer detailed information about device features and operation.
MAXQ612, MAXQ622: Block Diagram MAXQ612, MAXQ622: Block Diagram Enlarge+

Key Features

  • High-Performance, Low-Power, 16-Bit RISC Core
  • DC to 12MHz Operation Across Entire Operating Range
  • 1.70V to 3.6V Operating Voltage
  • Can Be Powered from Battery (VDD) or USB (VDDB)
  • 33 Total Instructions for Simplified Programming
  • Three Independent Data Pointers Accelerate Data Movement with Automatic Increment/Decrement
  • Dedicated Pointer for Direct Read from Code Space
  • 16-Bit Instruction Word, 16-Bit Data Bus
  • 16 x 16-Bit General-Purpose Working Registers
  • Secure MMU for Application Partitioning and IP Protection
  • Memory Features
    • 128KB Flash Memory
      • 512-Byte Sectors
      • 20,000 Erase/Write Cycles per Sector
    • 6KB Data SRAM
  • USB Features (MAXQ622 Only)
    • USB 2.0 Full-Speed Compatible
    • Hardware Receive and Transmit Buffers for High Throughput
    • Integrated Full-Speed Transceiver
    • On-Chip Termination and Pullup Resistors
  • Additional Peripherals
    • Power-Fail Warning
    • Power-On Reset (POR)/Brownout Reset
    • Automatic IR Carrier Frequency Generation and Modulation
    • Two 16-Bit Programmable Timers/Counters with Prescaler and Capture/Compare
    • Two SPI Communication Ports
    • Two USART Communication Ports
    • I²C Port
    • Programmable Watchdog Timer
    • 8kHz Nanopower Ring Oscillator Wake-Up Timer
    • Up to 56 General-Purpose I/O
  • Low Power Consumption
    • 0.3µA (typ), 3µA (max) in Stop Mode
      • TA = +25°C, Power-Fail Monitor Disabled
    • 4.8mA (typ) at 12MHz, 520µA (typ) at 1MHz in Active Mode


  • Battery-Powered Portable Equipment
  • Consumer Electronics
  • Home Appliances
  • Remote Controls
  • White Goods
Part NumberMCU CoreCore Clock Speed
Data ProcessingInternal Flash
Internal SRAM
USARTsSPI BusI2C BusUSBGPIO PinsPWMTimer FeaturesPackage/PinsBudgetary
maxmaxSee Notes
MAXQ622 MAXQ20S1216-bit1286221 Master/SlaveDevice Including Transceiver442
Wake Up Timer
$2.91 @1k
See All Microcontrollers (58)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAXQ622-KIT: Evaluation Kit for the MAXQ622

Technical Documents

App Note 5913 Getting Started with the MAXQ622 Evaluation Kit
Tutorial 5884 Turn Any Video Game Controller into a USB Mouse
Reference Schematic 5684 High-Performance Temperature Measurement Using Thermocouples and Precision Delta-Sigma ADCs, Part 2
Full System Design 5672 Fit Vital Signs Monitoring Shirt
User Guide 5618 MAXQ20-Based Microcontroller Bootloader Command Reference
Reference Schematic 5523 Liquid-Level Control and Delivery System Uses a Compensated Silicon Pressure Sensor and Precision Delta-Sigma ADCs, Part 2
App Note 5388 Getting Started with the DS8005 Evaluation Kit
Reference Schematic 5319 Liquid-Level Measurement System Uses a Compensated Silicon Pressure Sensor and Precision Delta-Sigma ADCs, Part 1
App Note 5106 Getting Started with the DeepCover Secure Microcontroller (MAXQ1010) Evaluation Kit and the IAR Embedded Workbench
App Note 5028 DeepCover Secure Microcontroller (MAXQ1050) Rowley Development Environment Setup
User Guide 4813 MAXQ612/MAXQ622 User's Guide
Tutorial 4694 Introduction to Digital Stethoscopes and Electrical Component Selection Criteria
Tutorial 4689 Blood Pressure Monitor Design Considerations
Tutorial 4688 Introduction to Spirometers and Important Design Considerations for Selecting Electrical Components
Tutorial 4686 Important Design Considerations for Heart-Rate and Fitness Monitors
Tutorial 4671 Improve Sensor Performance and SNR in Pulse Oximeter Designs

Quality and Environmental Data

Product Reliability Reports: MAXQ622.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

MAXQ612, MAXQ622 User's Guide
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


Related Resources

ChipDNA Secure Arm Cortex M4 Microcontroller

    High-Efficiency Microcontroller for Secure Element IoT
  • Secure Element
  • Power Management Maximizes Operating Time for Battery Applications
  • Multiple Peripherals for System Control

Low-Power Arm Cortex-M4 Microcontroller with Contactless Radio for Secure Applications

  • High-Efficiency Microcontroller for Secure Battery-Powered Applications
  • Scalable Cached External Memory Interfaces
  • Security Features Facilitates System-Level Protection