Microchip Technology ATMEGA328-AU Microcontrollers
IC MCU 8BIT 32KB FLASH 32TQFP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
ATMEGA328-AU
Detailed Description
IC MCU 8BIT 32KB FLASH 32TQFP
Package
32-TQFP
Lifecycle Status
Active
Datasheet
Quick Jump:
Technical Specifications
Microchip Technology ATMEGA328-AU Microcontrollers technical specifications.
General
Series
ATmega328
RAM Size
2K x 8
Data Bus Width
8 bit
Maximum Clock Frequency
20 MHz
RoHS
Yes
Package / Case
32-TQFP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
1.8V ~ 5.5V
Lifecycle Status
Active
Alternate Parts Comparison (ATMEGA328-AU vs ATMEGA8L-8AU vs ATMEGA88V-10AI vs ATMEGA168A-AUR)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 32-TQFP | 32-TQFP | 32-TQFP | 32-TQFP |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 1.8V ~ 5.5V | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 1.8V ~ 5.5V |
| Core Processor | AVR | AVR | AVR | AVR |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit |
| RAM Size | 2K x 8 | 1K x 8 | 1K x 8 | 1K x 8 |
| Connectivity | I²C, SPI, UART/USART | I²C, SPI, UART/USART | I²C, SPI, UART/USART | I²C, SPI, UART/USART |
| Data Converters | A/D 8x10b | A/D 8x10b | A/D 8x10b | A/D 8x10b |
| EEPROM Size | 1K x 8 | 512 x 8 | 512 x 8 | 512 x 8 |
| Number of I/O | 23 | 23 | 23 | 23 |
| Oscillator Type | Internal | Internal | Internal | Internal |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
Suggested replacements
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IC MCU 32BIT 32KB FLASH 32TQFP
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IC MCU 8BIT 32KB FLASH 32LQFP
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IC MCU 8BIT 32KB FLASH 44QFP
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