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
