Microchip ATmega32U4 8-Bit Microcontroller 32KB Flash USB TQFP-44
Microchip ATmega32U4 8-bit microcontroller with 32KB flash, USB 2.0 Full-Speed/Low-Speed, 2.5KB SRAM and a TQFP-44 surface-mount package.
The Microchip ATmega32U4 is an 8-bit microcontroller with 32KB of in-system programmable flash and an integrated USB 2.0 controller.
Built on the high-performance AVR RISC architecture, it comes factory-configured with a USB boot loader in the on-chip flash boot section. This enables in-system programming (ISP) directly from a USB host, without removing the chip from the system or relying on an external programming interface.
The device provides 32KB of ISP flash for program storage, 2.5KB of SRAM and 1KB of EEPROM for non-volatile data. Its USB 2.0 Full-Speed/Low-Speed controller suits projects that require direct communication with computers or other USB hosts, such as custom HID devices.
Key Features
- Advanced 8-bit AVR RISC CPU with a maximum operating frequency of 16 MHz
- 26 programmable I/O lines for peripheral connectivity
- Hardware support for USB 2.0, USART, I2C and SPI
- 10-bit ADC with up to 12 channels for analog sensor reading
- Operating voltage from 2.7V to 5.5V, suitable for 3.3V and 5V systems
- Operating temperature range of -40°C to +85°C
- Supplied in a compact, surface-mount TQFP-44 package
Boot Loader Support
The integrated boot loader supports auto-baud detection (for 8/16 MHz crystals), reading and writing flash and EEPROM, reading the device ID and performing a full chip erase.
- Embedded applications
- Custom USB HID devices
- Projects requiring direct communication with computers or USB hosts
- Industrial environments
- Core: 8-bit AVR RISC CPU
- Maximum Operating Frequency: 16 MHz
- Flash Memory: 32KB in-system self-programmable
- SRAM: 2.5KB
- EEPROM: 1KB
- Programmable I/O Lines: 26
- Communication Interfaces: USB 2.0, USART, I2C, SPI
- USB Controller: USB 2.0 Full-Speed/Low-Speed
- ADC: 10-bit, up to 12 channels
- Operating Voltage: 2.7V to 5.5V
- Operating Temperature: -40°C to +85°C
- Package: Surface-mount TQFP-44
- Special Feature: Factory-configured USB boot loader for in-system programming
- Weight: 7.031 g
- Width: 3.3
- Depth: 1.5
- Height: 4.3
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