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전자부품 데이터시트 검색엔진 |
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ATMEGA1281-16MUR 데이터시트(PDF) 5 Page - ATMEL Corporation |
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ATMEGA1281-16MUR 데이터시트(HTML) 5 Page - ATMEL Corporation |
5 / 34 page ![]() 5 ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY] 2549QS–AVR–02/2014 2. Overview The ATmega640/1280/1281/2560/2561 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architect u re. By executing powerful instructions in a singl e cloc k cycle, the ATmega640/1280/1281/2560/2561 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. 2.1 Block Diagram Figure 2-1. Block Diagram The Atmel ® AVR® core combines a rich instruction set with 32 general purpose working registers. All the 32 regis- ters are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers. CPU GND VCC RESET Power Supervision POR/ BOD & RESET Watchdog Oscillator Watchdog Timer Oscillator Circuits / Clock Generation XTAL1 XTAL2 PC7..0 PORT C(8) PA7..0 PORT A (8) PORT D (8) PD7..0 PORT B(8) PB7..0 PORT E(8) PE7..0 PORT F(8) PF7..0 PORT J(8) PJ7..0 PG5..0 PORT G(6) PORT H (8) PH7..0 PORT K(8) PK7..0 PORT L (8) PL7..0 XRAM TWI SPI EEPROM JTAG 8 bit T/C0 8 bit T/C2 16 bit T/C1 16 bit T/C3 SRAM FLASH 16 bit T/C4 16 bit T/C5 USART 2 USART 1 USART 0 Internal Bandgap reference Analog Comparator A/D Converter USART 3 NOTE: Shaded parts only available in the 100-pin version. Complete functionality for the ADC, T/C4, and T/C5 only available in the 100-pin version. |
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