ATMEGA328P-20AU
数据手册.pdfMCU 8Bit ATmega AVR RISC 32KB Flash 3.3V/5V 32Pin TQFP
**Overview**
The ATmega328P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega328P achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.
**Features**
•- .
- *High Performance, Low Power AVR**® **8-Bit Microcontroller**
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- *Advanced RISC Architecture**
**– 131 Powerful Instructions – Most Single Clock Cycle Execution**
**– 32 x 8 General Purpose Working Registers**
**– Fully Static Operation**
**– Up to 16 MIPS Throughput at 16 MHz**
**– On-chip 2-cycle Multiplier**
•- .
- *High Endurance Non-volatile Memory Segments**
**– 32K Bytes of In-System Self-Programmable Flash progam memory**
**– 1K Bytes EEPROM**
**– 2K Bytes Internal SRAM**
**– Write/Erase Cycles: 10,000 Flash/100,000 EEPROM**
**– Optional Boot Code Section with Independent Lock Bits**
**• In-System Programming by On-chip Boot Program**
**• True Read-While-Write Operation**
**– Programming Lock for Software Security**
•- .
- *Peripheral Features**
**– Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode**
**– One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture ****Mode**
**– Real Time Counter with Separate Oscillator**
**– Six PWM Channels**
**– 8-channel 10-bit ADC in TQFP and QFN/MLF package**
**• Temperature Measurement**
**– Programmable Serial USART**
**– Master/Slave SPI Serial Interface**
**– Byte-oriented 2-wire Serial Interface Philips I****2****C compatible**
**– Programmable Watchdog Timer with Separate On-chip Oscillator**
**– On-chip Analog Comparator**
**– Interrupt and Wake-up on Pin Change**
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- *Special Microcontroller Features**
**– Power-on Reset and Programmable Brown-out Detection**
**– Internal Calibrated Oscillator**
**– External and Internal Interrupt Sources**
**– Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, ****and Extended Standby**
•- .
- *I/O and Packages**
**– 23 Programmable I/O Lines**
**– 32-lead TQFP, and 32-pad QFN/MLF**
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- *Operating Voltage:**
**– 2.7V - 5.5V for ATmega328P**
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- *Temperature Range:**
**– Automotive Temperature Range: -40**°**C to +125**°**C**
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- *Speed Grade:**
**– 0 - 8 MHz @ 2.7 - 5.5V Automotive Temp. Range: -40°C to +125°C**
**– 0 - 16 MHz @ 4.5 - 5.5V Automotive Temp. Range: -40°C to +125°C**
•- .
- *Low Power Consumption**
**– Active Mode: 1.5mA @3V - 4MHz**
**– Power-down Mode: 1 µA @3V**