Infrared Remote Control System-On-Chip

Integrated Clock Saves Additional Components and Simplifies Design

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The MAXQ611 is a low-power, 16-bit MAXQ® microcontroller designed for low-power applications including universal remote controls, consumer electronics, and white goods. The device combines a powerful 16-bit RISC microcontroller and integrated peripherals including two universal synchronous/asynchronous receiver-transmitters (USART), SPI master/slave and I2C communications ports, along with an IR module with carrier frequency generation and flexible port I/O capable of multiplexed keypad control.

The device provides 80KB of flash memory and 2KB of data SRAM.

For the ultimate in low-power battery-operated performance, the device includes an ultra-low-power stop mode. In this mode, the minimum amount of circuitry is powered. Wake-up sources include external interrupts, the power-fail interrupt, and a timer interrupt.

MAXQ611: Block Diagram MAXQ611: Block Diagram Enlarge+

Key Features

  • Fast, Compact Architecture Allows Easy Integration into Applications
    • Internal 12MHz Oscillator Requires No External Components
    • Efficient, 16-Bit MAXQ20S RISC Core
    • 1.7V to 3.6V Wide Operating Range
    • 80KB Flash Program Memory
    • 2KB SRAM for Data Storage
    • Default VPFW Compatible with MAXQ610
  • Integrated IR Module Reduces Cost and Development Time
    • Transmit and Receive (Code Learning) Modes
    • Automatic Carrier Generation/Modulation
    • Glitch Filter Improves Noise Immunity
    • Configurable High-Current Driver
  • Peripherals Support Multiple Applications
    • Up to 32 (TQFN) or 38 (Bare Die) GPIO
    • Two 16-Bit Programmable Timers/Counters Include Capture/Compare Functionality
    • SPI, I2C, and Two USART Busses
    • Programmable Watchdog Timer Enhances System Stability
  • Low Power Consumption Maximizes Battery Life
    • Power-Fail Warning Circuit Minimizes Effects of Power Fluctuation
    • Power-On and Brownout Reset Circuitry
    • 2.0mA (typ) at 12MHz in Active Mode


  • Universal Remote Controls for Smartphones
  • Universal Remote Controls for Tablets

Quality and Environmental Data

Product Reliability Reports: MAXQ611.pdf 
Lead-Free Package Tin (Sn) Whisker Reports
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 >


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