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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATmega
Packaging Tube |
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) 1.8V ~ 5.5V
Data Converters A/D 6x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 105°C (TA)
Grade -
Qualification AEC -
Mounting Type Through Hole
Supplier Device Package 28-PDIP
Package / Case 28-DIP (0.300", 7.62mm)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATMEGA328P-PN from Microchip is a high-performance 8-bit AVR microcontroller with 32KB flash and 2KB SRAM. It operates from 1.8V to 5.5V at speeds up to 20MHz, featuring PWM, brown-out detection, and a watchdog timer. The 28-pin DIP package is breadboard-friendly, making it a staple for hobbyist and industrial designs alike.

  • Wide Voltage Range: 1.8V-5.5V allows direct battery or regulated 5V supply without level shifting.
  • High Temperature Tolerance: Rated to 105°C, suitable for automotive and industrial environments.
  • Through-Hole Package: Easy to solder and replace, reducing field service complexity.
  • Rich Peripheral Set: PWM, analog comparator, and WDT reduce external component count.

Arduino-Compatible Prototyping

The 28-DIP package and 5V operation make it a drop-in for classic Arduino boards, enabling rapid development of interactive projects.

Automotive Aftermarket Sensors

With a -40°C to 105°C range and 20MHz speed, it handles engine-adjacent monitoring like oil pressure or temperature sensing.

Home Automation Hubs

Its 32KB flash supports Zigbee or custom RF stacks, while 5.5V tolerance simplifies power supply design in mains-powered hubs.

Educational Robotics Kits

The DIP form factor allows students to socket-replace MCUs without soldering, ideal for learning embedded programming.

Industrial Timer/Counters

Built-in PWM and WDT provide reliable timing for conveyor belt controllers or batch counters in harsh environments.

Battery-Powered Data Loggers

At 1.8V operation, it can run directly from two AA cells, logging environmental data to external EEPROM.

Q: What is the maximum clock speed?
A: The ATMEGA328P-PN runs at up to 20MHz.
Q: What is the supply voltage range?
A: It operates from 1.8V to 5.5V, compatible with both 3.3V and 5V systems.
Q: How much flash memory is available?
A: It has 32KB of flash memory and 2KB of SRAM.
Q: What package is this?
A: It is in a 28-pin DIP package, ideal for through-hole prototyping.
Q: Does it support PWM?
A: Yes, it includes PWM channels along with brown-out detect and watchdog timer.
Base Product Number : ATMEGA328P
1.8V-5.5V 20MHz 2KB SRAM 32KB Flash 8-bit MCU Arduino ATMEGA328P automotive AVR DIP-28 industrial Microchip PWM
Q: What is the maximum clock speed?
A: The ATMEGA328P-PN runs at up to 20MHz.
Q: What is the supply voltage range?
A: It operates from 1.8V to 5.5V, compatible with both 3.3V and 5V systems.
Q: How much flash memory is available?
A: It has 32KB of flash memory and 2KB of SRAM.
Q: What package is this?
A: It is in a 28-pin DIP package, ideal for through-hole prototyping.
Q: Does it support PWM?
A: Yes, it includes PWM channels along with brown-out detect and watchdog timer.