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ATMEGA328A - 8-bit Microcontroller

Download the ATMEGA328A datasheet PDF. This datasheet also covers the ATMEGA variant, as both devices belong to the same 8-bit microcontroller family and are provided as variant models within a single manufacturer datasheet.

General Description

VCC Digital supply voltage.

GND Ground.

Port B (PB7:0) XTAL1/XTAL2/TOSC1/TOSC2 Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit).

Key Features

  • High Performance, Low Power Atmel®AVR® 8-Bit Microcontroller Family Advanced RISC Architecture.
  • 131 Powerful Instructions.
  • Most Single Clock Cycle Execution.
  • 32 x 8 General Purpose Working Registers.
  • Fully Static Operation.
  • Up to 20 MIPS Throughput at 20MHz.
  • On-chip 2-cycle Multiplier High Endurance Non-volatile Memory Segments.
  • 4/8/16/32KBytes of In-System Self-Programmable Flash program memory.
  • 256/512/.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (ATMEGA-328A.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
ATmega328 CMOS 8-bit microcontroller Microchip
ATmega328P CMOS 8-bit microcontroller Microchip
ATmega328PB Microcontroller Microchip
ATmega328V 8-bit Microcontroller ATMEL Corporation
ATmega3208 Microcontrollers Microchip

Other Datasheets by Atmel (now Microchip Technology)

Part Number Description
ATmega328 8-bit AVR Microcontrollers
ATmega328P 8-bit Microcontroller
ATmega32 8-bit Microcontroller
ATmega323 8-bit Microcontroller
ATmega323L 8-bit Microcontroller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Atmel 8-bit Microcontroller with 4/8/16/32KBytes InSystem Programmable Flash ATmega48A; ATmega48PA; ATmega88A; ATmega88PA; ATmega168A; ATmega168PA; ATmega328; ATmega328P SUMMARY Features • • High Performance, Low Power Atmel®AVR® 8-Bit Microcontroller Family Advanced RISC Architecture – 131 Powerful Instructions – Most Single Clock Cycle Execution – 32 x 8 General Purpose Working Registers – Fully Static Operation – Up to 20 MIPS Throughput at 20MHz – On-chip 2-cycle Multiplier High Endurance Non-volatile Memory Segments – 4/8/16/32KBytes of In-System Self-Programmable Flash program memory – 256/512/512/1KBytes EEPROM – 512/1K/1K/2KBytes Internal SRAM – Write/Erase Cycles: 10,000 Flash/100,000 EEPROM – Data retention: 20 years at 85C/100 years at 25C(1) – Optional Boot Code Section with