ATmega16U4/ATmega32U4
8-bit Microcontroller with 16/32K bytes of ISP Flash and
USB Controller
DATASHEET
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 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 85C/ 100 years at 25C(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
…