Datasheet

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2503Q–AVR–02/11
ATmega32(L)
Standby Mode 34
Extended Standby Mode 34
Minimizing Power Consumption 34
System Control and Reset 36
Internal Voltage Reference 41
Watchdog Timer 41
Interrupts 44
Interrupt Vectors in ATmega32 44
I/O Ports 49
Introduction 49
Ports as General Digital I/O 50
Alternate Port Functions 54
Register Description for I/O Ports 64
External Interrupts 66
8-bit Timer/Counter0 with PWM 69
Overview 69
Timer/Counter Clock Sources 70
Counter Unit 70
Output Compare Unit 71
Compare Match Output Unit 72
Modes of Operation 73
Timer/Counter Timing Diagrams 77
8-bit Timer/Counter Register Description 80
Timer/Counter0 and Timer/Counter1 Prescalers 84
16-bit Timer/Counter1 86
Overview 86
Accessing 16-bit Registers 89
Timer/Counter Clock Sources 91
Counter Unit 91
Input Capture Unit 93
Output Compare Units 94
Compare Match Output Unit 96
Modes of Operation 97
Timer/Counter Timing Diagrams 105
16-bit Timer/Counter Register Description 107
8-bit Timer/Counter2 with PWM and Asynchronous Operation 114
Overview 114
Timer/Counter Clock Sources 115