Microchip Technology ATmega32U4 8-bit Microcontroller (MCU) with USB Controller is a low-power, AVR® RISC-based device featuring 32KB self-programming flash program memory, 2.5KB SRAM, 1KB EEPROM, USB 2.0 full-speed/low-speed device module, 12-channel, 10-bit analog-to-digital converter, and JTAG interface for on-chip-debug. This Microchip device achieves up to 16 MIPS throughput at 16MHz and 2.7 to 5.5V operation. By executing powerful instructions in a single clock cycle, Microchip ATmega32U4 MCU achieves throughputs approaching 1MIPS per MHz, allowing you to optimize power consumption versus processing speed.

Features:

• High Performance, Low Power AVR® 8-Bit Microcontroller
• Advanced RISC Architecture
  • 135 Powerful Instructions Most Single Clock Cycle Execution
  • 32 x 8 General Purpose Working Registers
  • Fully Static Operation
  • Up to 16 MIPS Throughput at 16 MHz
  • On-Chip 2-cycle Multiplier
• Non-volatile Program and Data Memories
  • 32K Bytes of In-System Self-Programmable Flash
  • 2.5K Bytes Internal SRAM
  • 1K Bytes Internal EEPROM
  • Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
  • Data retention: 20 years at 85°C/ 100 years at 25°C(1)
  • Optional Boot Code Section with Independent Lock Bits
    • In-System Programming by On-chip Boot Program
    • True Read-While-Write Operation
    • All supplied parts are preprogrammed with a default USB bootloader
  • Programming Lock for Software Security

• JTAG (IEEE std. 1149.1 compliant) Interface
  • Boundary-scan Capabilities According to the JTAG Standard
  • Extensive On-chip Debug Support
  • Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
• USB 2.0 Full-speed/Low-Speed Device Module with Interrupt on Transfer Completion
  • Complies fully with Universal Serial Bus Specification Rev 2.0
  • Supports data transfer rates up to 12 Mbit/s and 1.5 Mbit/s
  • Endpoint 0 for Control Transfers: up to 64-bytes
  • 6 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

Applications:

• Sensors for industrial automation
• PC peripherals
  • PC accessories
  • Small I/O devices