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MAXQ2000 Low-Power LCD Microco
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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 (VDD > 1.8V) or 20MHz (VDD > 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
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