ATMEGA48P-20PU

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### AVR 微控制器，Atmel

The is a high-performance picoPower 8-bit AVR RISC-based Microcontroller combines 4kB ISP flash memory with read-while-write capabilities, 256byte EEPROM, 512byte SRAM, 23 general purpose I/O lines, 32 general purpose working registers, three flexible timers/counters with compare modes, internal and external interrupts, serial programmable USART, a byte-oriented 2-wire serial interface, SPI serial port, 6-channel 10-bit A/D converter, programmable watchdog timer with internal oscillator and five software selectable power saving modes. The device operates between 2.7 to 5.5V. By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1MIPS per MHz, balancing power consumption and processing speed. The device is manufactured using Atmel"s high density nonvolatile memory technology. The on-chip ISP flash allows the program memory to be reprogrammed in-system through an SPI serial interface.

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Advanced RISC architecture

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Power-on reset 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

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131 Powerful instructions-most single clock cycle execution

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32 x 8 General purpose working registers

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Fully static operation

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Up to 20MIPS throughput at 20MHz

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On-chip 2-cycle multiplier

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QTouch® library support

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Programmable watchdog timer with separate on-chip oscillator

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On-chip analog comparator

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Interrupt and wake-up on pin change

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Two 8-bit timers/counters with separate prescalers and compare modes

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One 16-bit timer/counter with separate prescaler, compare mode and capture mode

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Real-time counter with separate oscillator

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Six PWM channels

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Programmable serial USART

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Master/Slave SPI serial interface