8-bit AVR microcontroller featuring 32KB Flash memory and 2.5KB RAM. Operates at up to 16MHz with an 8-bit data bus width. Supports I2C, SPI, USB, UART, and USART interfaces, with 26 I/Os, 12 ADC channels, and 8 PWM channels. Surface mountable in a VQFN package, offering a wide operating temperature range of -40°C to 85°C and supply voltages from 2.7V to 5.5V. Includes integrated peripherals like Brown-out Detect/Reset, POR, and a Watchdog Timer.
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Microchip ATMEGA32U4-MU technical specifications.
| Package/Case | VQFN |
| Core Architecture | AVR |
| Data Bus Width | 8b |
| Frequency | 16MHz |
| Height | 0.95mm |
| Interface | I2C, SPI, USB, UART, USART |
| Lead Free | Lead Free |
| Length | 7.1mm |
| Max Frequency | 16MHz |
| Max Operating Temperature | 85°C |
| Max Supply Voltage | 5.5V |
| Memory Size | 32KB |
| Memory Type | FLASH, |
| Min Operating Temperature | -40°C |
| Min Supply Voltage | 2.7V |
| Mount | Surface Mount |
| Number of ADC Channels | 12 |
| Number of I/Os | 26 |
| Number of I2C Channels | 1 |
| Number of PWM Channels | 8 |
| Number of SPI Channels | 2 |
| Number of Timers/Counters | 3 |
| Number of UART Channels | 1 |
| Number of USB Channels | 1 |
| Oscillator Type | Internal |
| Packaging | Tray |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| RAM Size | 2.5KB |
| Reach SVHC Compliant | No |
| RoHS Compliant | Yes |
| Series | AVR® ATmega |
| Watchdog Timer | Yes |
| Width | 7.1mm |
| RoHS | Compliant |
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