ATMEGA325-16AJ ATMEL [ATMEL Corporation], ATMEGA325-16AJ Datasheet - Page 342
ATMEGA325-16AJ
Manufacturer Part Number
ATMEGA325-16AJ
Description
8-bit Microcontroller with In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATMEGA325-16AJ.pdf
(347 pages)
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ATmega325/3250/645/6450
System Control and Reset ................................................................ 38
Interrupts ............................................................................................ 47
I/O-Ports.............................................................................................. 52
External Interrupts............................................................................. 76
8-bit Timer/Counter0 with PWM........................................................ 80
Timer/Counter0 and Timer/Counter1 Prescalers ............................ 94
16-bit Timer/Counter1........................................................................ 96
Power-down Mode.............................................................................................. 34
Power-save Mode............................................................................................... 34
Standby Mode..................................................................................................... 35
Power Reduction Register .................................................................................. 35
Minimizing Power Consumption ......................................................................... 36
Internal Voltage Reference ................................................................................. 43
Watchdog Timer ................................................................................................. 43
Timed Sequences for Changing the Configuration of the Watchdog Timer ....... 46
Interrupt Vectors in ATmega325/3250/645/6450................................................ 47
Introduction ......................................................................................................... 52
Ports as General Digital I/O ................................................................................ 53
Alternate Port Functions ..................................................................................... 57
Register Description for I/O-Ports....................................................................... 73
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
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
2570A–AVR–09/04
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