General Description

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 mar-

ket, but can be used in any application that requires

high performance and low-power operation. The device

32kWords of flash memory, 1kWord of RAM, three 16-

bit timers, and one or two universal synchronous/asyn-

chronous 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 bat-

tery-powered, portable equipment.

Applications

Medical Instrumentation

Battery-Powered and Portable Devices

Electrochemical and Optical Sensors

Industrial Control

Data-Acquisition Systems and Data Loggers

Home Appliances

Consumer Electronics

Thermostats/Humidity Sensors

Security Sensors

Gas and Chemical Sensors

HVAC

Smart Transmitters

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

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

Low-Power LCD Microcontroller

______________________________________________

Maxim Integrated Products

1

Rev 10; 7/08

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Typical Operating Circuit, Pin Configurations, and

Ordering Information appear at end of data sheet.

MAXQ is a registered trademark of Maxim Integrated Products, Inc.

SPI is a trademark of Motorola, Inc.

1-Wire is a registered trademark of Dallas Semiconductor Corp., a wholly owned subsidiary of Maxim Integrated Products, Inc.

EVALUATION

KIT

AVAILABLE

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be