Overview
The ATMEGA32U4-MUR is an 8-bit AVR microcontroller from Microchip Technology, part of the ATmega series. This microcontroller is renowned for its integrated USB controller, making it a versatile choice for various applications. It features 32 KB of ISP flash memory, 2.5 KB of SRAM, and 1 KB of EEPROM. The device operates at a maximum frequency of 16 MHz and supports a supply voltage range of 2.7 to 5.5 volts. The ATMEGA32U4-MUR is packaged in a 44-pin VQFN (Very Thin Quad Flat No-Lead) exposed pad package, which is RoHS compliant.
Key Specifications
| Parameter | Value |
|---|---|
| Microcontroller Type | 8-bit AVR MCU |
| Flash Memory | 32 KB |
| SRAM | 2.5 KB |
| EEPROM | 1 KB |
| Operating Frequency | Up to 16 MHz |
| Supply Voltage | 2.7 to 5.5 V |
| Package Type | 44-pin VQFN Exposed Pad |
| Number of I/O Pins | 26 |
| Interfaces | I2C, I2S, SPI, UART, USART, USB |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
Key Features
- Complies fully with Universal Serial Bus Specification Rev. 2.0
- Supports data transfer rates up to 12 Mbit/s and 1.5 Mbit/s
- Six programmable endpoints with In or Out directions and with Bulk, Interrupt, or Isochronous Transfers
- Configurable endpoints size up to 256 bytes in double bank mode
- Fully independent 832 bytes USB DPRAM for endpoint memory allocation
- Suspend/Resume Interrupts and USB Bus Reset detection
- Crystal-less operation for Low-Speed mode
- 48 MHz from PLL for Full-Speed Bus Operation
Applications
The ATMEGA32U4-MUR is widely used in various applications due to its integrated USB capabilities and robust feature set. Some common uses include:
- Custom keyboards and keyboard controllers, especially with the QMK firmware.
- USB-based projects such as USB sticks, USB-to-serial converters, and other USB peripherals.
- Embedded systems requiring USB communication.
- IoT devices and smart home automation projects.
- Industrial control systems and automation.
Q & A
- What is the ATMEGA32U4-MUR microcontroller?
The ATMEGA32U4-MUR is an 8-bit AVR microcontroller from Microchip Technology with integrated USB capabilities. - How much flash memory does the ATMEGA32U4-MUR have?
The ATMEGA32U4-MUR has 32 KB of ISP flash memory. - What is the maximum operating frequency of the ATMEGA32U4-MUR?
The maximum operating frequency is 16 MHz. - What is the supply voltage range for the ATMEGA32U4-MUR?
The supply voltage range is 2.7 to 5.5 volts. - How many I/O pins does the ATMEGA32U4-MUR have?
The ATMEGA32U4-MUR has 26 I/O pins. - What interfaces does the ATMEGA32U4-MUR support?
The ATMEGA32U4-MUR supports I2C, I2S, SPI, UART, USART, and USB interfaces. - What are some common applications of the ATMEGA32U4-MUR?
Common applications include custom keyboards, USB-based projects, embedded systems, IoT devices, and industrial control systems. - Is the ATMEGA32U4-MUR RoHS compliant?
Yes, the ATMEGA32U4-MUR is RoHS compliant. - What is the package type of the ATMEGA32U4-MUR?
The package type is a 44-pin VQFN Exposed Pad. - Does the ATMEGA32U4-MUR support crystal-less operation?
Yes, it supports crystal-less operation for Low-Speed mode.
