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 segments, two analog comparators with precision internal 1.25V reference voltage, and a real-time clock (RTC) module with a dedicated battery-backup supply.

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

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