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ATmega328P データシート(PDF) 5 Page - ATMEL Corporation |
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ATmega328P データシート(HTML) 5 Page - ATMEL Corporation |
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5 / 448 page  5 8161D–AVR–10/09 ATmega48PA/88PA/168PA/328P 2. Overview The ATmega48PA/88PA/168PA/328P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega48PA/88PA/168PA/328P 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 AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers 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 PORT C (7) PORT B (8) PORT D (8) USART 0 8bit T/C 2 16bit T/C 1 8bit T/C 0 A/D Conv. Internal Bandgap Analog Comp. SPI TWI SRAM Flash EEPROM Watchdog Oscillator Watchdog Timer Oscillator Circuits / Clock Generation Power Supervision POR / BOD & RESET PROGRAM LOGIC debugWIRE 2 GND AREF AVCC ADC[6..7] PC[0..6] PB[0..7] PD[0..7] 6 RESET XTAL[1..2] CPU |
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