MAXQ3100 Datasheet, PDF (1/30 Pages) Maxim Integrated Products – Mixed-Signal Microcontroller with Analog Comparators, LCD, and RTC

Rev 0; 6/07
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Mixed-Signal Microcontroller with Analog
Comparators, LCD, and RTC
General Description
The MAXQ3100 microcontroller is a low-power, 16-bit
RISC device that incorporates an integrated liquid-crystal
display (LCD) interface that can drive up to 160 seg-
ments, two analog comparators with precision internal
1.25V reference voltage, and a real-time clock (RTC)
module with a dedicated battery-backup supply. An inter-
nal temperature sensor allows software to monitor device
temperature and optionally interrupt to alert when a tem-
perature conversion is complete. The MAXQ3100 is
uniquely suited for single-phase electricity metering appli-
cations that require an external analog front-end, but can
be used in any application that requires high-perfor-
mance operation. The device operates at a fixed
4.194MHz, generated from the 32.76kHz RTC crystal. The
device has 8kWords of EEPROM, 512 words of RAM,
three 16-bit timers, and two universal synchronous/asyn-
chronous receiver/transmitters (USARTs). The microcon-
troller core and I/O are powered by a single 3.3V supply,
and an additional battery supply keeps the RTC running
during power outages.
Applications
Utility Meters
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
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAXQ3100-EMN+ -40°C to +85°C 80 MQFP
+Denotes a Pb-free/RoHS-compliant device.
Typical Application Circuits and Pin Configuration appear
at end of data sheet.
MAXQ is a registered trademark of Maxim Integrated Products, Inc.
Note: Some revisions of this device may incorporate deviations
from published specifications known as errata. Multiple revi-
sions of any device may be simultaneously available through
various sales channels. For information about device errata, go
to: www.maxim-ic.com/errata.
Features
♦ High-Performance, Low-Power, 16-Bit RISC Core
4.194MHz Operation, Approaching 1MIPS
per MHz
3.3V Core and I/O
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
8kWords EEPROM
200,000 EEPROM Write/Erase Cycles
512 Words of Internal Data RAM
JTAG-Compatible Debug Port Bootloader for
Programming
♦ Peripheral Features
Up to 27 General-Purpose I/O Pins, Most 5V
Tolerant
160-Segment LCD Driver
Up to 4 COM and 40 Segments
Static, 1/2, and 1/3 LCD Bias Supported
No External Resistors Required
Two Analog Comparators with Internal +1.25V
Precision Reference
Two Serial USARTs, One with Infrared PWM
Support
Digital Temperature Sensor
Three 16-Bit Programmable Timers/Counters
8-Bit, Subsecond, System Timer/Alarm
Battery-Backed, 32-Bit RTC with
Time-of-Day Alarm and Digital Trim
Programmable Watchdog Timer
♦ Flexible Programming Interface
Bootloader Simplifies Programming
In-System Programming Through Debug Port
Supports In-Application Programming of EEPROM
♦ Power Consumption
1.9mA at 4.194MHz, 3.6V Operation
1.9µA Standby Current in Sleep Mode
Low-Power Divide-by-256 Mode
________________________________________________________________ Maxim Integrated Products 1
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.