NEC PD789488 User Manual page 13

5.4.5 When subsystem clock is not used ............................................................................................. 104
Subsystem clock ×4 multiplication circuit .................................................................................... 104
5.4.6
5.5 Clock Generator Operation.....................................................................................................105
5.6 Changing Setting of System Clock and CPU Clock .............................................................106
5.6.1 Time required for switching between system clock and CPU clock............................................. 106
5.6.2 Switching between system clock and CPU clock ........................................................................ 107
CHAPTER 6 16-BIT TIMER 20............................................................................................................108
6.1 16-Bit Timer 20 Functions .......................................................................................................108
6.2 16-Bit Timer 20 Configuration ................................................................................................108
6.3 Registers Controlling 16-Bit Timer 20 ...................................................................................110
6.4 16-Bit Timer 20 Operation .......................................................................................................113
6.4.1 Operation as timer interrupt ........................................................................................................ 113
6.4.2 Operation as timer output............................................................................................................ 115
6.4.3 Capture operation ....................................................................................................................... 116
6.4.4 16-bit timer counter 20 readout ................................................................................................... 117
6.5 Cautions on Using 16-Bit Timer 20 ........................................................................................118
6.5.1 Restrictions when rewriting 16-bit compare register 20............................................................... 118
CHAPTER 7 8-BIT TIMERS 50, 60, AND 61 ...................................................................................120
7.1 Functions of 8-Bit Timers 50, 60, and 61 ...............................................................................120
7.2 Configuration of 8-Bit Timers 50, 60, and 61 ........................................................................122
7.3 Control Registers for 8-Bit Timers 50, 60, and 61 ................................................................128
7.4 Operation of 8-Bit Timers 50, 60, and 61 ...............................................................................134
7.4.1 Operation as 8-bit timer counter.................................................................................................. 134
7.4.2 Operation as 16-bit timer counter................................................................................................ 143
7.4.3 Operation as carrier generator .................................................................................................... 150
7.4.4 PWM output mode operation (timer 50) ...................................................................................... 154
7.4.5 PPG output mode operation (timer 60 and timer 61)................................................................... 158
7.5 Cautions on Using 8-Bit Timers 50, 60, and 61.....................................................................160
CHAPTER 8 WATCH TIMER ...............................................................................................................161
8.1 Watch Timer Functions ...........................................................................................................161
8.2 Configuration of Watch Timer ................................................................................................162
8.3 Control Registers for Watch Timer ........................................................................................163
8.4 Watch Timer Operation ...........................................................................................................165
8.4.1 Operation as watch timer ............................................................................................................ 165
8.4.2 Operation as interval timer .......................................................................................................... 165
CHAPTER 9 WATCHDOG TIMER .......................................................................................................167
9.1 Watchdog Timer Functions ....................................................................................................167
9.2 Watchdog Timer Configuration ..............................................................................................168
9.3 Watchdog Timer Control Registers .......................................................................................169
9.4 Watchdog Timer Operation.....................................................................................................171
User's Manual U15331EJ4V1UD
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