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
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