Low-Power LCD Microcontroller

Industry's Highest MIPS/mA, 16-Bit, RISC Microcontroller
 Overview   Design Resources   Ordering Info   Related Products   All   

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)
Send this datasheet to any email addressEmail

My Maxim: Not Logged In
By logging in to My Maxim you can subscribe to alerts for this data sheet.

Login | Register
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

Technical Documents

App Note 3006  Using MAXQ's Multiplier Module
App Note 3205  Using Timers in the MAXQ Family of Microcontrollers
App Note 3221  Benchmarking the MAXQ® Instruction-Set Architecture vs. RISC Competitors
App Note 3222  Introduction to the MAXQ Architecture
App Note 3378  Getting Started with the IAR Compiler and the MAXQ2000 Evaluation Kit
App Note 3383  Programming in the MAXQ Environment
App Note 3384  Accessing the Functions Provided in the MAXQ Utility ROM
App Note 3385  An Example Application Using the MAXQ2000 Evaluation Kit
App Note 3386  Signal Processing with the MAXQ Multiply-Accumulate Unit (MAC)
App Note 3414  Using a Keypad and LCD Display with the MAXQ2000
App Note 3483  Audio Filtering with the MAXQ2000
App Note 3546  Security System Control with the MAXQ2000
App Note 3548  Using an LCD with MAXQ Microcontrollers
App Note 3561  Getting started with MAX-IDE
App Note 3563  Using Data Pointers to Read/Write to SRAM
App Note 3568  Using the MAXQ2000 with the MAX4397 to Create an Inexpensive Audio/Video Source Selector
App Note 3588  Software I²C Driver for the MAXQ2000 Microcontroller
App Note 3593  MAXQ Competitive Analysis Study
Tutorial 3620  Temperature-Based Fan Control Using the MAXQ2000 Microcontroller
App Note 3637  Add USB to Anything
App Note 3653  MAXQ Microcontroller Drives a Smart and Intelligent 4-20mA Transmitter
App Note 3666  Pulse Width Modulation (PWM) with the MAXQ2000 Timer Type 2
App Note 3667  Using Lookup Tables to Perform Gamma Correction on LEDs
App Note 3688  Using the MAXQ2000 with the MAX6960 to Create a Stock Quote Display System
App Note 3698  Getting Started with Rowley CrossWorks and the MAXQ2000 Evaluation Kit
App Note 3720  Options for Embedded User Interfaces
App Note 3729  Using the MAX6951/MAX6950 LED Display Drivers with SPI Interface to Communicate with the MAXQ2000 Microcontroller
App Note 3770  Table Operations for the MAXQ Architecture
App Note 3845  The MAXQ Microcontroller in Action: Designing a Bicycle Computer with the MAXQ2000
User Guides & Manuals 3905  MAX-IDE Simulator User's Guide for the MAXQ Microcontrollers
App Note 3960  Unlocking the Secrets of the MAXQ®
App Note 3966  Multiplexing JTAG Interface Pins on MAXQ Microcontrollers
App Note 3969  SD Media Format Expands the MAXQ2000's Space for Nonvolatile Data Storage
App Note 4008  Calling Utility ROM Functions with IAR's Embedded Workbench for MAXQ
App Note 4012  Implementing a JTAG Bootloader Master for the MAXQ2000 Microcontroller
App Note 4017  How to Create a MAXQ®-Based "Learning" Remote Control
App Note 4024  SPI/I²C Bus Lines Control Multiple Peripherals
Reference Schematic 4091  Reference Design for Power-over-Ethernet (PoE) Midspan or Endpoint Insertion
App Note 4112  Leveraging Nonvolatile Memory Services in MAXQ® Processors
App Note 4194  How to Use the MAXQ2000 as a Voltmeter
Reference Schematic 4195  Selecting SPI Clock Modes for Interfacing the MAX1132 ADC with the MAXQ2000 Microcontroller
App Note 4200  Getting Started with the DS8113 Smart-Card Analog Interface Evaluation Kit
App Note 4205  Using the uIP Stack to Network a MAXQ Microcontroller
App Note 4238  Implementing a Soft Stack in Data Memory on the MAXQ2000
App Note 4246  How to Use Serial Peripheral Interface (SPI) on the MAXQ3180 Microcontroller
Reference Schematic 4267  Proven Implementations of the I²C Bus
App Note 4277  Getting Started with the MAXQ2000 USB Thumb Evaluation Kit
Reference Schematic 4379  Display Different LED Sequences Using the MAXQ2000 Microcontroller with the MAX6970 LED Driver
App Note 4420  Automatically Initializing Data Segment Values in MAX-IDE
App Note 4450  Getting Started with the MAX6651 Fan Controller
Tutorial 4671  Improve Sensor Performance and SNR in Pulse Oximeter Designs
Tutorial 4686  Important Design Considerations for Heart-Rate and Fitness Monitors
Tutorial 4689  Blood Pressure Monitor Design Considerations
Tutorial 4690  Important Design Considerations for Digital Thermometers
Tutorial 4694  Introduction to Digital Stethoscopes and Electrical Component Selection Criteria
User Guides & Manuals 4811  MAXQ Family User's Guide
User Guides & Manuals 4819  MAXQ® Family User's Guide: MAXQ2000 Supplement
App Note 4913  A Simple Implementation of LCD Brightness Control Using the MAX44009 Ambient-Light Sensor
App Note 5074  Implementing an ADC with a Microcontroller, an Op Amp, and Resistors
Reference Schematic 5150  Simple Wireless Temperature Monitor Also Has Data-Logging Capabilities
Reference Schematic 5244  Modern PRTD Temperature Sensors and High-Resolution Delta-Sigma ADCs Enable Wide Range High-Accuracy Temperature Measurements
Reference Schematic 5387  QAM Reference Design Using the MAX5880 Modulator and MAX5882 RF DAC
User Guides & Manuals 5618  MAXQ20-Based Microcontroller Bootloader Command Reference

Reliability Reports

Reliability Report: MAXQ2000.pdf

Ordering Information

Filters: Part Number Package: Temperature: Tape and Reel Sample
Part Number Free
Buy Status Explanations for product status codes Recommended Replacement Package:
Temp RoHS/Lead-Free?
Materials Analysis
MAXQ2000-QAX     N/A No Longer Available MAXQ2000-QAX+

QFN;68 pin;100 mm²
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
Active   QFN;68 pin;100 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAXQ2000-QBX     N/A No Longer Available   TQFN;56 pin;65.6 mm²
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
Active   TQFN;56 pin;65.6 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAXQ2000-RAX     N/A No Longer Available   QFN;68 pin;100 mm²
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
Active   QFN;68 pin;100 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
Last Time Buy   TQFN;56 pin;65.6 mm²
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
Active   TQFN;56 pin;65.6 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAXQ2000-RFX     N/A No Longer Available   LQFP;100 pin;262.4 mm²
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
Active   LQFP;100 pin;262.4 mm²
-40°C to +85°C See data sheet

  1. Other options and links for purchasing parts are listed at:
  2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
  3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
  4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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:

Similar Products by Function

MAXQ2000-KIT Evaluation Kit for the MAXQ2000
See All Microcontrollers (47Products)

Similar Products by Application

Advanced Backplane Solutions: ATCA/MicroTCA > Microcontroller
Blood Glucose Meters > Microcontroller Unit (MCU)
Blood Pressure Monitors > Microcontroller Unit (MCU)
Digital Stethoscopes > Microcontroller Unit (MCU)/Digital Signal Processor (DSP)
Digital Thermometers > Microcontroller Unit (MCU)
Heart-Rate/Fitness Monitors > Microcontroller Unit (MCU)
Insulin Pumps > Microcontroller
MP3 Docking Stations: Mid Level > Microcontroller
Pulse Oximeters > MCU/DSP

Evaluation Kits

MAXQ2000-KIT Evaluation Kit for the MAXQ2000
MINIQUSB Evaluates: SPI and SMBus/I²C-Compatible Parts

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

Didn't Find What You Need?

Information Index

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