Microcontroller with Analog Comparator and LED Driver

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The MAXQ3212 microcontroller is a low-power, 16-bit RISC device that incorporates an analog comparator and a high-current I/O pin for directly driving an LED. The device is uniquely suited for cost-conscious applications such as battery-powered devices, system monitors, and white goods, but can be used in any application that requires high performance and low-power operation. The high-performance 16-bit RISC MAXQ® core and 8-bit accumulators are complemented by standard amenities such as timers and digital I/O. The power consumption per MIPS ratio is among the best in the 16-bit microcontroller industry.

Note: Designers must have the following documents to fully use all the features of this device. This 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.
MAXQ3212: Typical Operating Circuit MAXQ3212: Typical Operating Circuit Enlarge+

Key Features

  • High-Performance, Low-Power, 16-Bit RISC Core
    • DC to 3.58MHz Operation, Approaching 1MIPS per MHz
    • +5V ±10% Operation
    • Up to 15 General-Purpose I/O Pins
    • 33 Instructions, Most Single-Cycle
    • Two Independent Data Pointers Accelerate Data Movement with Automatic Increment/Decrement
    • Two Loop Counters
    • 4-Level Hardware Stack
    • 16-Bit Instruction Word, 16-Bit Data Bus
    • 16 x 8-Bit Accumulators
    • 16 x 16 General-Purpose Working Registers
    • Optimized for C Compiler (High-Speed/Density Code)
    • JTAG-Like Debug/Visibility Port
  • Program and Data Memory
    • 1kWord EEPROM Program Memory, Mask ROM for High-Volume Applications
    • 128 Bytes EEPROM Data Memory
    • 60,000 EEPROM Write/Erase Cycles
    • 64 Bytes SRAM Data Memory
    • In-System Programming
  • Peripheral Features
    • 16-Bit Programmable Timer/Counter with Prescaler
    • High-Current I/O Pin Suitable for LED Drive
    • Programmable Watchdog Timer
    • Selectable Power-Fail Reset
    • Power-On Reset (POR)
    • Wake-Up Timer
    • Internal 8kHz Ring Oscillator
  • Flexible Programming Interface
    • Bootloader Simplifies Programming
    • In-System Programming Through JTAG
    • Supports In-Application Programming of EEPROM Memory
  • Ultra-Low-Power Consumption
    • 2.7µA Stop Mode Current (typ)
    • Low-Power Divide-by-256 Mode
  • Analog Features
    • Analog Comparator Uses Internal or External Voltage Reference
    • +2.5V Reference Output Available


  • Battery-Powered and Portable Devices
  • Electrochemical and Optical Sensors
  • Environmental Systems
  • Gas and Chemical Sensors
  • Home Appliances
  • Industrial Control

Technical Documents

User Guide 4811 MAXQ Family User's Guide
App Note 3770 Table Operations for the MAXQ Architecture
App Note 3561 Getting started with MAX-IDE

Quality and Environmental Data

Request Reliability Report for: MAXQ3212 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

MAXQ Family User's Guide (PDF)
MAXQ Family User's Guide: MAXQ3210/MAXQ3212 Supplement (PDF)
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.

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