Samsung S5PC110 Manual page 738

1 Pulse Width Modulation Timer..................................................................1-1
1.1 Overview of Pulse Width Modulation Timer............................................................................................. 1-1
1.2 Key Features of Pulse Width Modulation Timer ...................................................................................... 1-4
1.3 PWM Operation........................................................................................................................................ 1-5
1.3.1 Prescaler and Divider ....................................................................................................................... 1-5
1.3.2 Basic Timer Operation...................................................................................................................... 1-5
1.3.3 Auto-reload and Double Buffering .................................................................................................... 1-7
1.3.4 Timer Operation Example................................................................................................................. 1-8
1.3.5 Initialize Timer (setting manual-up data and inverter) ...................................................................... 1-9
1.3.6 PWM (Pulse Width Modulation)........................................................................................................ 1-9
1.3.7 Output Level Control....................................................................................................................... 1-10
1.3.8 Dead Zone Generator..................................................................................................................... 1-11
1.4 I/O description ........................................................................................................................................ 1-12
1.5 Register Description............................................................................................................................... 1-13
1.5.1 Register Map .................................................................................................................................. 1-13
2 System Timer..............................................................................................2-1
2.1 Overview of System Timer....................................................................................................................... 2-1
2.2 Key Features of System Timer ................................................................................................................ 2-2
2.3 Internal Function of System Timer ........................................................................................................... 2-2
2.4 Detailed Operation ................................................................................................................................... 2-3
2.5 Tick Generation with Fractional Divider ................................................................................................... 2-4
2.6 Usage Model ............................................................................................................................................ 2-6
2.6.1 Counter Setting................................................................................................................................. 2-6
2.6.2 Interrupt ............................................................................................................................................ 2-6
2.6.3 Count Value Update ......................................................................................................................... 2-6
2.6.4 START Timer.................................................................................................................................... 2-7
2.6.5 STOP Timer...................................................................................................................................... 2-7
2.6.6 Change Interval Interrupt at Run-time .............................................................................................. 2-7
2.7 I/O Description ......................................................................................................................................... 2-8
2.8 Register Description................................................................................................................................. 2-9
2.8.1 Register Map .................................................................................................................................... 2-9
3 Watchdog Timer .........................................................................................3-1
3.1 Overview of Watchdog Timer................................................................................................................... 3-1
3.2 Key Features of Watchdog Timer ............................................................................................................ 3-1
3.3 Functional Description of Watchdog Timer.............................................................................................. 3-2
3.3.1 Watchdog Timer Operation .............................................................................................................. 3-2
3.3.2 WTDAT and WTCNT ........................................................................................................................ 3-2
3.3.3 WDT Start ......................................................................................................................................... 3-2
3.3.4 Consideration of Debugging Environment........................................................................................ 3-3
3.4 Register Description................................................................................................................................. 3-4
3.4.1 Register Map .................................................................................................................................... 3-4
4 Real Time Clock (RTC)...............................................................................4-1
Table of Contents