ATMEGA644PA-AU

8 位 PicoPower megaAVR 系列微控制器，Atmel此系列 megaAVR 微控制器具有 picoPower 技术 — 非常适合节能。 它们提供大量程序和数据内存，性能高达 20 MIPS。 **picoPower megaAVR 微控制器的特色和优点** •片上闪存 •SRAM •内部 EEPROM •SPI •TWI I²C •USART、USB、CAN 和 LIN 接口 •监控计时器 •精密振荡器 •GPIO 引脚 •ADC •DAC •内置温度传感器 •内部参考电压 •掉电检测器

The is a 8-bit high-performance picoPower AVR RISC-based Microcontroller combines 64kB ISP flash memory with read-while-write capabilities, 2kB EEPROM, 4kB SRAM, 32 general purpose I/O lines, 32 general purpose working registers, a real time counter, three flexible timer/counters with compare modes and PWM, two USARTs, a byte oriented 2-wire serial interface, an 8-channel 10-bit A/D converter with optional differential input stage with programmable gain, programmable watchdog timer with internal oscillator, SPI serial port, a JTAG IEEE 1149.1 compliant test interface for on-chip debugging and programming and six software selectable power saving modes. The device operates between 1.8 to 5.5V. By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and processing speed.

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Advanced RISC architecture - On-chip 2-cycle multiplier

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High endurance, non-volatile memory segments

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QTouch® library support - Capacitive touch buttons, sliders and wheels

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JTAG IEEE 1149.1 compliant interface

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Peripheral features - Real time counter with separate oscillator

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Power-on reset POR and programmable brown-out detection

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Internal calibrated RC oscillator

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External and internal interrupt sources

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Six sleep modes - Idle, ADC noise reduction, power-save, power-down, standby and extended standby