Microchip Technology ATMEGA329P-20MU

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATmega
Packaging Tray | NULL
Core Processor AVR
Core Size 8-Bit
Speed 20MHz
Connectivity SPI, UART/USART, USI
Peripherals Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number of I/O 54
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) 2.7V ~ 5.5V
Data Converters A/D 8x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 64-QFN (9x9)
Package / Case 64-VFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATMEGA329P-20MU is a high-speed 8-bit AVR microcontroller from Microchip running at 20MHz. It offers 32KB flash and 2KB SRAM, with an integrated LCD driver. Operating from 2.7V to 5.5V, it includes brown-out detection, POR, PWM, and WDT. The 64-VFQFN package is designed for demanding industrial and automotive applications.

  • High-speed processing: 20MHz clock enables real-time control and fast display updates.
  • Integrated LCD driver: Reduces external components and simplifies design.
  • Robust protection: Brown-out detection and WDT ensure reliable operation in noisy environments.
  • Flexible power: 2.7-5.5V supports both 3.3V and 5V systems.

High-Performance Industrial Displays

20MHz speed enables fast screen updates for production line counters with LCD readouts.

Automotive Instrument Clusters

5V operation and PWM drive warning LEDs; LCD shows speed and fuel levels.

Medical Infusion Pumps

32KB flash stores dosing protocols; WDT ensures safe operation; LCD displays flow rates.

Point-of-Sale Terminals

20MHz processing handles keypad scanning and LCD updates for payment devices.

Smart Grid Meters

Brown-out detection protects billing data; LCD shows consumption; PWM controls relays.

Robotics Controllers

Fast PWM generation for servo motors; LCD provides debugging info; POR ensures clean boot.

Q: What is the maximum speed?
A: It operates at 20MHz.
Q: What is the flash size?
A: It has 32KB (16K x 16) of flash.
Q: Does it have an LCD driver?
A: Yes, it includes a segment LCD controller.
Q: What is the supply voltage?
A: It runs from 2.7V to 5.5V.
Base Product Number : ATMEGA329P
20MHz 2KB SRAM 32KB flash 8-bit MCU ATMEGA329P-20MU automotive AVR industrial LCD driver medical VFQFN-64
Q: What is the maximum speed?
A: It operates at 20MHz.
Q: What is the flash size?
A: It has 32KB (16K x 16) of flash.
Q: Does it have an LCD driver?
A: Yes, it includes a segment LCD controller.
Q: What is the supply voltage?
A: It runs from 2.7V to 5.5V.