Ciencias

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 – 16/32K Bytes of In-System Self-Programmable Flash (ATmega16U4/ATmega32U4) – 1.25/2.5K Bytes Internal SRAM (ATmega16U4/ATmega32U4) – 512Bytes/1K Bytes Internal EEPROM (ATmega16U4/ATmega32U4) – 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 preprogramed 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 – Fully independent 832 bytes USB DPRAM for endpoint memory allocation – Suspend/Resume Interrupts – CPU Reset possible on USB Bus Reset detection – 48 MHz 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 to 96 MHz operation – One 8-bit Timer/Counter with Separate Prescaler and Compare Mode – Two 16-bit