ATmega32U4
Overview
- 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 16MHz - On-Chip 2-cycle Multiplier
- Non-volatile Program and Data Memories - 16/32KB of In-System Self-Programmable Flash - 1.25/2.5KB Internal SRAM - 512Bytes/1KB 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 Parts using external XTAL clock are pre-programed 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 12Mbit/s and 1.5Mbit/s - Endpoint 0 for Control Transfers: up to 64-bytes - 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 - CPU Reset possible on USB Bus Reset detection - 48MHz from PLL for Full-speed Bus Operation - USB Bus Connection/Disconnection on Microcontroller Request - Crystal-less operation for Low Speed mode
- Peripheral Features - On-chip PLL for USB and High Speed Timer: 32 up
