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MAXQ3120

Dallas Semiconducotr
Part Number MAXQ3120
Manufacturer Dallas Semiconducotr
Description High-Precision ADC Mixed-Signal Microcontroller
Published Sep 27, 2005
Detailed Description Rev 1; 8/05 High-Precision ADC Mixed-Signal Microcontroller General Description The MAXQ3120 microcontroller is a high-...
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MAXQ3120
MAXQ3120

Overview
Rev 1; 8/05 High-Precision ADC Mixed-Signal Microcontroller General Description The MAXQ3120 microcontroller is a high-performance, 16-bit microcontroller that incorporates dual, true-differential, 16-bit sigma-delta analog-to-digital converters (ADCs), a liquid-crystal display (LCD) interface that can drive up to 112 segments, and a real-time clock (RTC) module with a dedicated battery-backup supply.
The MAXQ3120 is uniquely suited for the single-phase electricity metering market, but can be used in any application that requires high-performance operation.
The device can operate at a maximum of 8MHz (DVDD = 3.
3V).
The MAXQ3120 has 16kWords of flash memory, 256 words of RAM, three 16-bit timers, and two universal synchronous/asynchronous receiver/transmitters (USARTs).
The microcontroller core and I/O are powered by a single 3.
3V supply, and an additional battery supply keeps the RTC running during power outages.
Features ♦ High-Performance, Low-Power, 16-Bit RISC Core DC to 8MHz 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 16kWords Flash Memory 1,000,000 Flash Write/Erase Cycles 256 Words of Internal Data RAM JTAG Bootloader for Programming ♦ Dual, 16-Bit Sigma-Delta ADCs Differential Analog Input Channels Programmable Gain of 1x or 16x Integrated Sinc3 Filters Digital Phase Compensation and Trimmable Bandgap Reference ♦ Peripheral Features Up to 32 General-Purpose I/O Pins 112-Segment LCD Driver Up to 4 COM and 28 Segments Static, 1/2, and 1/3 LCD Bias Supported No External Resistors Required Two Serial USARTs, One with Infrared PWM Support One-Cycle, 16 x 16 Hardware Multiply/ Accumulate with 40-Bit Accumulator Three 16-Bit Programmable Tim...


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