Microchip Technology ATMEGA328P-MNR

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATmega
Packaging Cut Tape (CT) | Tape & Reel (TR)
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 8x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 105°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 32-VQFN (5x5)
Package / Case 32-VFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATMEGA328P-MNR from Microchip Technology is a high-performance 8-bit AVR microcontroller in a compact 32-VFQFN package. It delivers 20MHz processing speed with 32KB flash memory and 2KB SRAM. Operating from 1.8V to 5.5V, it includes brown-out detection, power-on reset, PWM, and watchdog timer. Its extended temperature range of -40°C to 105°C makes it suitable for demanding industrial and automotive environments.

  • Wide voltage range (1.8V-5.5V) enables flexible power supply design and direct battery operation.
  • High temperature tolerance (-40°C to 105°C) ensures reliability in harsh environments.
  • 32KB flash memory provides ample code space for complex applications.
  • Compact VFQFN package saves PCB area for space-constrained designs.

IoT Sensor Nodes

With 20MHz speed and 32KB flash, it can handle sensor fusion and wireless protocol stacks while maintaining low power consumption.

Battery-Powered Devices

The 1.8V minimum supply voltage allows direct operation from two AA batteries or a single Li-ion cell without a regulator.

Motor Control

Six PWM channels and multiple timers enable precise control of brushed DC motors and simple stepper drivers.

Data Logging Systems

2KB SRAM and 1KB EEPROM provide sufficient storage for calibration data and small log buffers in industrial monitoring.

Prototyping and Education

Its wide ecosystem and 32-VFQFN package make it ideal for compact PCB designs in university labs and maker projects.

Automotive Aftermarket

The -40°C to 105°C temperature range supports under-hood and cabin electronics in retrofitted vehicle systems.

Q: What is the operating voltage range of the ATMEGA328P-MNR?
A: It operates from 1.8V to 5.5V, making it suitable for battery and 3.3V/5V systems.
Q: What is the maximum clock speed?
A: The AVR core runs at up to 20MHz.
Q: How much flash memory does it have?
A: It has 32KB of in-system programmable flash memory.
Q: What package is this variant?
A: It comes in a 32-VFQFN exposed pad package.
Q: Does it include analog features?
A: Yes, it has 10-bit ADC, PWM, and multiple timers.
Base Product Number : ATMEGA328P
20MHz 32KB Flash 8-bit MCU ADC ATmega328P AVR Industrial IoT Low Power PWM VFQFN-32
Q: What is the operating voltage range of the ATMEGA328P-MNR?
A: It operates from 1.8V to 5.5V, making it suitable for battery and 3.3V/5V systems.
Q: What is the maximum clock speed?
A: The AVR core runs at up to 20MHz.
Q: How much flash memory does it have?
A: It has 32KB of in-system programmable flash memory.
Q: What package is this variant?
A: It comes in a 32-VFQFN exposed pad package.
Q: Does it include analog features?
A: Yes, it has 10-bit ADC, PWM, and multiple timers.