Microchip Technology ATMEGA32U4-MU Microcontrollers
8-bit AVR MCU, 32 KB, 2560 Bytes, 16 MHz, 2.7 to 5.5V, VQFN-44, RoHS
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
ATMEGA32U4-MU
Detailed Description
Advanced Microchip ATMEGA32U4-MU Microcontrollers for precision electronics.
Package
Surface Mount
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
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Technical Specifications
Microchip Technology ATMEGA32U4-MU Microcontrollers technical specifications.
General
Series
ATmega32U4
Interface
I2C, I2S, SPI, UART, USART, USB
Memory Size
32 kB
RAM Size
2.5 kB
Data Bus Width
8 b
Maximum Clock Frequency
16 MHz
RoHS
Compliant
Number of Pins
45
Package / Case
44-VFQFN Exposed Pad
Mounting Type
Surface Mount
Related Parts Comparison (ATMEGA32U4-MU vs ATMEGA128A-MUR vs ATMEGA165PV-8MUR vs ATMEGA645V-8AU)
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 | |
|---|---|---|---|---|
| Series | ATmega32U4 | AVR® ATmega | AVR® ATmega | AVR® ATmega |
| Package / Case | 44-VFQFN Exposed Pad | 64-VFQFN Exposed Pad | 64-VFQFN Exposed Pad | 64-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 | 2.7V ~ 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 | 2.5 kB | 4K x 8 | 1K x 8 | 4K x 8 |
| RoHS | Compliant | Yes | Yes | Yes |
| Lifecycle Status | Production | Active | Active | Active |
| Connectivity | I²C, SPI, UART/USART, USB | EBI/EMI, I²C, SPI, UART/USART | SPI, UART/USART, USI | SPI, UART/USART, USI |
| Data Converters | A/D 12x10b | A/D 8x10b | A/D 8x10b | A/D 8x10b |
| 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
MC9S08PT32VLDNXP SemiconductorsNXP
IC MCU 8BIT 32KB FLASH 44LQFP
MC9S08PA32VLDNXP SemiconductorsNXP
IC MCU 8BIT 32KB FLASH 44LQFP
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