16-Bit Microcontroller with Infrared Module

Increase the Life of Battery-Powered Equipment with 150nA Stop-Mode Current and Widest Operating Voltage


The MAXQ61H is a low-power, 16-bit MAXQ® microcontroller designed for low-power applications including universal remote controls, consumer electronics, and white goods. The MAXQ61H combines a powerful 16-bit RISC microcontroller and integrated peripherals including an IR module with carrier frequency generation and flexible port I/O capable of multiplexed keypad control.

The MAXQ61H includes 36KB of ROM memory and 1.28KB of data SRAM.

For the ultimate in low-power battery-operated performance, the MAXQ61H includes an ultra-low-power stop mode (0.2µA, typ). 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 1.70V to 3.6V operating voltage.

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.

  • MAXQ61H IC data sheet
  • MAXQ61H revision-specific errata sheet (Click here for availability)
  • MAXQ610 User's Guide
MAXQ61H: Pin Configuration MAXQ61H: Pin Configuration 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 Range
  • 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
  • Memory Features
    • 36KB ROM
    • 1.28KB Data SRAM
  • Additional Peripherals
    • Power-Fail Warning
    • Power-On Reset/Brownout Reset
    • Automatic IR Carrier Frequency Generation and Modulation
    • Two 16-Bit, Programmable Timers/Counters with Prescaler and Capture/Compare
    • Programmable Watchdog Timer
    • 8kHz Nanopower Ring Oscillator Wake-Up Timer
    • Up to 24 (MAXQ61HA) General-Purpose I/Os
  • Low Power Consumption
    • 0.2µA (typ), 2.0µA (max) in Stop Mode
      • TA = +25°C, Power-Fail Monitor Disabled
    • 2.0mA (typ) at 12MHz in Active Mode


  • Battery-Powered Portable Equipment
  • Consumer Electronics
  • Home Appliances
  • Remote Controls
  • White Goods
Part Number MCU Core Core Clock Speed
Data Processing Internal SRAM
GPIO Pins PWM Timer Features
max max
MAXQ61H  MAXQ20S 12 16-bit 1 32 2
IR Timer
Wake Up Timer
See All Microcontrollers (42)
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.

Technical Documents

User Guide 5618 MAXQ20-Based Microcontroller Bootloader Command Reference
User Guide 4812 MAXQ610 User's Guide

Quality and Environmental Data

Product Reliability Reports: MAXQ61H.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

MAXQ610 User's Guide

Related Resources