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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

??? 1.9?A 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