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/-RBX+) or 132 (-RAX/-RAX+/-RFX/-RFX+) 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-volume 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.

• 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-Compiler (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? and 1-Wire? (-RAX/RAX+/-RFX/-RFX+ 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