ATMEGA328P-20AU

MCU 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**

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*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**

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*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**

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*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**

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*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**

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*Low Power Consumption**

**– Active Mode: 1.5mA @3V - 4MHz**

**– Power-down Mode: 1 µA @3V**