Microchip Technology ATMEGA16U4-AUR Microcontrollers
IC MCU 8BIT 16KB FLASH 44TQFP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
ATMEGA16U4-AUR
Base Model
Detailed Description
IC MCU 8BIT 16KB FLASH 44TQFP
Package
44-TQFP
Lifecycle Status
Active
Datasheet
ATMEGA16U4-AUR Datasheet
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Technical Specifications
Microchip Technology ATMEGA16U4-AUR Microcontrollers technical specifications.
General
RAM Size
1.25K x 8
RoHS
Yes
Package / Case
44-TQFP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
2.7V ~ 5.5V
Lifecycle Status
Active
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number of I/O
26
Speed
16MHz
Related Parts Comparison (ATMEGA16U4-AUR vs ATMEGA16U2-AU vs ATMEGA16U2-AUR vs ATMEGA16U2-MU)
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 | 44-TQFP | 32-TQFP | 32-TQFP | 32-VFQFN Exposed Pad |
| 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 | -40°C ~ 85°C (TA) |
| Supply Voltage | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Core Processor | AVR | AVR | AVR | AVR |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit |
| RAM Size | 1.25K x 8 | 512 x 8 | 512 x 8 | 512 x 8 |
| RoHS | Yes | Yes | Yes | Yes |
| Lifecycle Status | Active | Active | Active | Active |
| Connectivity | I²C, SPI, UART/USART, USB | SPI, UART/USART, USB | SPI, UART/USART, USB | SPI, UART/USART, USB |
| EEPROM Size | 512 x 8 | 512 x 8 | 512 x 8 | 512 x 8 |
| Number of I/O | 26 | 22 | 22 | 22 |
| 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
MC9S08PB16MTJNXP SemiconductorsNXP
IC MCU 8BIT 16KB FLASH 20TSSOP
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