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Atmel ATmega328P 8-bit AVR Microcontroller
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  • Manufacturer: Microchip Technology (Atmel Corporation was acquired by Microchip Technology in 2016)
  • Series: AVR® ATmega
  • Packaging: Tube
  • Part Status: Active
  • Core Processor: AVR
  • Core Size: 8-Bit
  • Speed: 20MHz
  • Connectivity: I²C, SPI, UART/USART
  • Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
  • Number of I/O: 23
  • Program Memory Size: 32KB (16K x 16)
  • Program Memory Type: FLASH
  • EEPROM Size: 1K x 8
  • RAM Size: 2K x 8
  • Voltage - Supply (Vcc/Vdd): 1.8 V ~ 5.5 V
  • Data Converters: A/D 6x10b
  • Oscillator Type: Internal
  • Operating Temperature: -40°C ~ 85°C (TA)
  • Package / Case: 28-DIP (0.300", 7.62mm)
  • Supplier Device Package: 28-PDIP
  • Base Part Number: ATMEGA328

The high-performance Microchip picoPower 8-bit AVR RISC-based microcontroller combines 32KB ISP flash memory with read-while-write capabilities, 1024B EEPROM, 2KB SRAM, 23 general purpose I/O lines, 32 general purpose working registers, three flexible timer/counters with compare modes, internal and external interrupts, serial programmable USART, a byte-oriented 2-wire serial interface, SPI serial port, a 6-channel 10-bit A/D converter (8-channels in TQFP and QFN/MLF packages), programmable watchdog timer with internal oscillator, and five software selectable power saving modes. The device operates between 1.8-5.5 volts.

By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and processing speed.