Transcription of ATmega16U4/ATmega32U4
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ATmega16U4/ATmega32U4
Atmel-7766J-USB-ATmega16U4/32U4-Datashee t_04/2016 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 16/32KB of In-System Self-Programmable Flash Internal SRAM 512 Bytes/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 BitsIn-System Programming by On-chip Boot ProgramTrue Read-While-Write OperationParts using external XTAL clock are pre-programed with a default USB bootloader Programming Lock for Software Security JTAG (IEEE std.)
Port F serves as analog inputs to the A/D Converter. Port F also serves as an 8-bit bi-directional I/O port, if the A/D Converter channels are not used. Port pins can provide internal pull-up resistors (selected for each bit). The Port F output buffers have symmetrical drive characteristics with both high sink and source capability.
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