ATMEGA6450V-8AJ 查看數據表（PDF） - Atmel Corporation
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ATMEGA6450V-8AJ Datasheet PDF : 347 Pages
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Power-down Mode.............................................................................................. 34
Power-save Mode............................................................................................... 34
Standby Mode..................................................................................................... 35
Power Reduction Register .................................................................................. 35
Minimizing Power Consumption ......................................................................... 36
System Control and Reset ................................................................ 38
Internal Voltage Reference ................................................................................. 43
Watchdog Timer ................................................................................................. 43
Timed Sequences for Changing the Configuration of the Watchdog Timer ....... 46
Interrupts ............................................................................................ 47
Interrupt Vectors in ATmega325/3250/645/6450................................................ 47
I/O-Ports.............................................................................................. 52
Introduction ......................................................................................................... 52
Ports as General Digital I/O ................................................................................ 53
Alternate Port Functions ..................................................................................... 57
Register Description for I/O-Ports....................................................................... 73
External Interrupts............................................................................. 76
8-bit Timer/Counter0 with PWM........................................................ 80
Overview............................................................................................................. 80
Timer/Counter Clock Sources............................................................................. 81
Counter Unit........................................................................................................ 81
Output Compare Unit.......................................................................................... 82
Compare Match Output Unit ............................................................................... 83
Modes of Operation ............................................................................................ 85
Timer/Counter Timing Diagrams......................................................................... 89
8-bit Timer/Counter Register Description ........................................................... 90
Timer/Counter0 and Timer/Counter1 Prescalers ............................ 94
16-bit Timer/Counter1........................................................................ 96
Overview............................................................................................................. 96
Accessing 16-bit Registers ................................................................................. 99
Timer/Counter Clock Sources........................................................................... 102
Counter Unit...................................................................................................... 102
Input Capture Unit............................................................................................. 103
Output Compare Units ...................................................................................... 105
Compare Match Output Unit ............................................................................. 107
Modes of Operation .......................................................................................... 108
Timer/Counter Timing Diagrams....................................................................... 115
16-bit Timer/Counter Register Description ....................................................... 117
ii ATmega325/3250/645/6450
2570A–AVR–09/04
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