Low-Power LCD Microcontroller

Industry's Highest MIPS/mA, 16-Bit, RISC Microcontroller
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Status Explanations for product status codes

Part Number Status
MAXQ2000 Active: In Production. But some versions of the family are subject to Last Time Buy. See Ordering Information.


The MAXQ2000 microcontroller is a low-power, 16-bit device that incorporates a liquid-crystal display (LCD) interface that can drive up to 100 (-RBX/-RBX+) or 132 (-RAX/-RAX+/-RFX/-RFX+) segments. The MAXQ2000 is uniquely suited for the blood-glucose monitoring market, but can be used in any application that requires high performance and low-power operation. The device can operate at a maximum of either 14MHz (VDD > 1.8V) or 20MHz (VDD > 2.25V). The MAXQ2000 has 32kWords of flash memory, 1kWord of RAM, three 16-bit timers, and one or two universal synchronous/asynchronous receiver/transmitters (UARTs). Flash memory aids prototyping and low-volume production. The microcontroller core is powered by a 1.8V supply, with a separate I/O supply for optimum flexibility. An ultra-low-power sleep mode makes these parts ideal for battery-powered, portable equipment.

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.

Data Sheet

Download this datasheet in PDF formatDownload Rev 10 (PDF, 496kB)
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Errata MAXQ2000 MAXQ2000A2.pdf
Errata MAXQ2000 MAXQ2000A3.pdf
An evaluation board is available: MAXQ2000-KIT MINIQUSB

Key Features

  • High-Performance, Low-Power, 16-Bit RISC Core
    • DC to 20MHz Operation, Approaching 1MIPS per MHz
    • Dual 1.8V Core/3V I/O Enables Low Power/Flexible Interfacing
    • 33 Instructions, Most Single Cycle
    • Three Independent Data Pointers Accelerate Data Movement with Automatic Increment/Decrement
    • 16-Level Hardware Stack
    • 16-Bit Instruction Word, 16-Bit Data Bus
    • 16 x 16-Bit, General-Purpose Working Registers
    • Optimized for C-Compiler (High-Speed/Density Code)
  • Program and Data Memory
    • 32kWords Flash Memory, Mask ROM for High-Volume Applications
    • 10,000 Flash Write/Erase Cycles
    • 1kWord of Internal Data RAM
    • JTAG/Serial Boot Loader for Programming
  • Peripheral Features
    • Up to 50 General-Purpose I/O Pins
    • 100/132 Segment LCD Driver
      • Up to 4 COM and 36 Segments
      • Static, 1/2, and 1/3 LCD Bias Supported
      • No External Resistors Required
    • SPI™ and 1-Wire® (-RAX/RAX+/-RFX/-RFX+ Only) Hardware I/O Ports
    • One or Two Serial UARTs
    • One-Cycle, 16 x 16 Hardware Multiply/Accumulate with 48-Bit Accumulator
    • Three 16-Bit Programmable Timers/Counters
    • 8-Bit, Subsecond, System Timer/Alarm
    • 32-Bit, Binary Real-Time Clock with Time-of-Day Alarm
    • Programmable Watchdog Timer
  • Flexible Programming Interface
    • Bootloader Simplifies Programming
    • In-System Programming Through JTAG
    • Supports In-Application Programming of Flash Memory
  • Ultra-Low-Power Consumption
    • 190µA typ at 8MHz Flash Operation, PMM1 at 2.2V
    • 700nA typ in Lowest Power Stop Mode
    • Low-Power 32kHz Mode and Divide-by-256 Mode


  • Battery-Powered and Portable Devices
  • Consumer Electronics
  • Data-Acquisition Systems and Data Loggers
  • Electrochemical and Optical Sensors
  • Gas and Chemical Sensors
  • Home Appliances
  • HVAC
  • Industrial Control
  • Medical Instrumentation
  • Security Sensors
  • Smart Transmitters
  • Thermostats/Humidity Sensors

Key Specifications:

Part Number MCU Core Core Clock Speed
Data Processing Internal Flash
Internal SRAM
USARTs SPI Bus GPIO Pins PWM Timer Features Budgetary
max max See Notes
MAXQ2000  MAXQ20 20 16-bit 64 2 2 1 50 3
$3.36 @1k
See All Microcontrollers (44)

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.


MAXQ2000: Pin Configuration
Pin Configuration

Notes and Comments

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about device errata, go to:

More Information

New Product Press Release   2004-11-02 ]
MAXQ Family User's Guide (PDF)
MAXQ Family User's Guide: MAXQ2000 Supplement (PDF, 10MB)
MAXQ Tools and Training

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Information Index

Rev 10; 2008-08-01
This page last modified: 2010-11-09