MAXQ2000 Datasheet, PDF (1/39 Pages) Maxim Integrated Products – Low-Power LCD Microcontroller

Rev 2; 12/04
Low-Power LCD Microcontroller
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) or 132 (-RAX)
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 (V_DD > 1.8V) or 20MHz (V_DD > 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-vol-
ume 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.
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
Typical Operating Circuit and Pin Configurations appear at
end of data sheet.
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-Complier (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^TM and 1-Wire^® (-RAX 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
PART
MAXQ2000-RAX
MAXQ2000-RBX
TEMP RANGE
PROGRAM
MEMORY
DATA
MEMORY
-40°C to +85°C 32kWord Flash 1kWord SRAM
-40°C to +85°C 32kWord Flash 1kWord SRAM
LCD
SEGMENTS
132
100
Ordering Information
EXTERNAL
INTERRUPTS
16
14
UARTS
2
1
PIN-
PACKAGE
68 QFN
56 TQFN
MAXQ is a trademark of Maxim Integrated Products, Inc.
SPI is a trademark of Motorola, Inc.
1-Wire is a registered trademark of Dallas Semiconductor Corp.
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:
www.maxim-ic.com/errata.
______________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.