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
Related Parts Comparison (ATMEGA328-AU vs ATMEGA8L-8AU vs ATMEGA88V-10AI vs ATMEGA168A-AUR)
Side-by-side specifications of related catalog parts.
Engineering verification required. Related parts may have different electrical ratings, pinouts, footprints, and operating limits. Verify suitability for your circuit before substitution.
| This Part | Related Part | Related Part | Related Part | |
|---|---|---|---|---|
| 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 |
| RoHS | Yes | Yes | Yes | Yes |
| Lifecycle Status | Active | Active | Obsolete | Active |
| 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 |
| 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
CY8C4025AXI-S402Infineon TechnologiesSimilar FunctionalityInfineon
IC MCU 32BIT 32KB FLASH 32TQFP
MC9S08QE32CLCNXP SemiconductorsNXP
IC MCU 8BIT 32KB FLASH 32LQFP
MC9S08GT32ACFBENXP SemiconductorsNXP
IC MCU 8BIT 32KB FLASH 44QFP
More Parts in Microcontrollers
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.