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ATMEGA3250V Datasheet(PDF) 4 Page - ATMEL Corporation |
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ATMEGA3250V Datasheet(HTML) 4 Page - ATMEL Corporation |
4 / 27 page 4 ATmega325/3250/645/6450 2570JS–AVR–11/06 Overview The ATmega325/3250/645/6450 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architec- ture. By executing powerful instructions in a single clock cycle, the ATmega325/3250/645/6450 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. Block Diagram Figure 3. Block Diagram PROGRAM COUNTER INTERNAL OSCILLATOR WATCHDOG TIMER STACK POINTER PROGRAM FLASH MCU CONTROL REGISTER SRAM GENERAL PURPOSE REGISTERS INSTRUCTION REGISTER TIMER/ COUNTERS INSTRUCTION DECODER DATA DIR. REG. PORTB DATA DIR. REG. PORTE DATA DIR. REG. PORTA DATA DIR. REG. PORTD DATA REGISTER PORTB DATA REGISTER PORTE DATA REGISTER PORTA DATA REGISTER PORTD TIMING AND CONTROL OSCILLATOR INTERRUPT UNIT EEPROM SPI USART STATUS REGISTER Z Y X ALU PORTB DRIVERS PORTE DRIVERS PORTA DRIVERS PORTF DRIVERS PORTD DRIVERS PORTC DRIVERS PB0 - PB7 PE0 - PE7 PA0 - PA7 PF0 - PF7 VCC GND CONTROL LINES PC0 - PC7 8-BIT DATA BUS CALIB. OSC DATA DIR. REG. PORTC DATA REGISTER PORTC ON-CHIP DEBUG JTAG TAP PROGRAMMING LOGIC BOUNDARY- SCAN DATA DIR. REG. PORTF DATA REGISTER PORTF ADC PD0 - PD7 DATA DIR. REG. PORTG DATA REG. PORTG PORTG DRIVERS PG0 - PG4 AGND AREF AVCC UNIVERSAL SERIAL INTERFACE AVR CPU |
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