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ATMEGA328P-AU
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Reference price and stock shown as of 2026-09-20. Confirm live availability and unit price via RFQ before placing a PO.

ATMEGA328P-AU

IC MCU 8BIT 32KB FLASH 32TQFP
Microchip Technology · Microcontrollers · BOM Matching
Mfr. Part Number
ATMEGA328P-AU
Manufacturer
Microchip Technology
Package / Case
32-TQFP
Datasheet
Datasheet
Description
IC MCU 8BIT 32KB FLASH 32TQFP
RoHS Status
Lead Free / RoHS Complaint
Availability
In Stock — Typically ships within 24 hours after order confirmation
sample
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ATMEGA328P-AU
Microchip Technology
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In Stock100,000
Unit
Price
$71.3848
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Reference Price
QuantityPrice
1$ 71.3848
Prices are for reference only. The final transaction is subject to confirmation.
As of 2026-09-20 · Valid as reference until 2026-09-27 · Request RFQ for live stock.
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Specification Summary

Package / Case
32-TQFP
Supplier Device Package
32-TQFP (7x7)
Voltage - Supply (Vcc/Vdd)
1.8V ~ 5.5V
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Connectivity
I²C, SPI, UART/USART
Full specifications are listed below. Need alternates or BOM matching? Read BOM guide · Request a quote
Stock status: In Stock — Typically ships within 24 hours after order confirmation
Final ship date confirmed with payment / PO terms.
Reference price and stock shown as of 2026-09-20. Confirm live availability and unit price via RFQ before placing a PO.
Lead time FAQ Authenticity FAQ MOQ FAQ
Specifications
Product Description
Purchase & Inquiry
Core Size
8-Bit
Program Memory Size
32KB (16K x 16)
Voltage - Supply (Vcc/Vdd)
1.8V ~ 5.5V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Connectivity
I²C, SPI, UART/USART
Core Processor
AVR
EEPROM Size
1K x 8
Number of I/O
23
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Program Memory Type
FLASH
RAM Size
2K x 8
Speed
20MHz
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Package / Case
32-TQFP
Supplier Device Package
32-TQFP (7x7)
IC MCU 8BIT 32KB FLASH 32TQFP
Brand Introduction

Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.

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Buying FAQ — ATMEGA328P-AU

Answer-first notes for stock, authenticity, lead time and quoting. Marked up as FAQPage.

ATMEGA328P-AU vs ATMEGA328P-PU — which package do I need?

AU is TQFP-32 (SMT); PU is DIP-28 (through-hole). Match the PCB. Firmware is largely compatible within 328P, but package is not interchangeable.

Is ATMEGA328P-AU still available for production?

Yes via Microchip channels and surplus. Lead times vary — send qty and we quote sealed tray vs loose. Consider AVR128DB / PIC alternatives for new designs.

How to avoid fake ATmega328P on the market?

Check laser marking depth, package mold texture and programming verify. We prefer factory-sealed trays and can do blank-check / signature read.

MOQ for ATMEGA328P-AU samples?

Samples and low MOQ are usually possible on in-stock lines. Reel / full tray pricing kicks in at higher breaks — ask for tier pricing.
BOM matching · Anti-counterfeit · Lead time & shipping · Full ATMEGA328P-AU FAQ page

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