UPD780974 데이터 시트보기 (PDF) - NEC => Renesas Technology
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UPD780974 Datasheet PDF : 301 Pages
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6.4 System Clock Oscillator ...................................................................................................... 92
6.4.1 Main system clock oscillator ....................................................................................................... 92
6.4.2 Divider circuit .............................................................................................................................. 94
6.5 Operation of Clock Generator ............................................................................................ 95
6.6 Changing Setting of CPU Clock ......................................................................................... 96
6.6.1 Time required for switching CPU clock ....................................................................................... 96
6.6.2 Switching CPU clock ................................................................................................................... 97
CHAPTER 7 16-BIT TIMER 0 TM0 ............................................................................................... 99
7.1 Outline of Internal Timer of µPD780973 Subseries ........................................................... 99
7.2 16-Bit Timer 0 Functions ..................................................................................................... 100
7.3 16-Bit Timer 0 Configuration .............................................................................................. 102
7.4 16-Bit Timer 0 Control Registers ........................................................................................ 103
7.5 16-Bit Timer 0 Operations ................................................................................................... 106
7.5.1 Pulse width measurement operations ......................................................................................... 106
7.6 16-Bit Timer 0 Cautions ....................................................................................................... 109
CHAPTER 8 8-BIT TIMER 1 TM1 ................................................................................................. 111
8.1 8-Bit Timer 1 Functions ....................................................................................................... 111
8.2 8-Bit Timer 1 Configuration ................................................................................................ 112
8.3 8-Bit Timer 1 Control Registers .......................................................................................... 113
8.4 8-Bit Timer 1 Operations ..................................................................................................... 115
8.4.1 8-bit interval timer operation ....................................................................................................... 115
8.5 8-Bit Timer 1 Cautions ......................................................................................................... 118
CHAPTER 9 8-BIT TIMER/EVENT COUNTERS 2, 3 TM2, TM3 .............................................. 119
9.1 8-Bit Timer/Event Counters 2 and 3 Functions ................................................................. 119
9.2 8-Bit Timer/Event Counters 2 and 3 Configurations ........................................................ 121
9.3 8-Bit Timer/Event Counters 2 and 3 Control Registers .................................................... 122
9.4 8-Bit Timer/Event Counters 2 and 3 Operations ............................................................... 125
9.4.1 8-bit interval timer operation ....................................................................................................... 125
9.4.2 External event counter operation ................................................................................................ 127
9.4.3 Square-wave output operation (8-bit resolution) ......................................................................... 128
9.4.4 8-bit PWM output operation ........................................................................................................ 129
9.5 8-Bit Timer/Event Counters 2 and 3 Cautions ................................................................... 132
CHAPTER 10 WATCH TIMER .......................................................................................................... 133
10.1 Watch Timer Functions ....................................................................................................... 133
10.2 Watch Timer Configuration ................................................................................................. 134
10.3 Watch Timer Control Register ............................................................................................ 135
10.4 Watch Timer Operations ..................................................................................................... 136
10.4.1 Watch timer operation ................................................................................................................. 136
10.4.2 Interval timer operation ............................................................................................................... 136
CHAPTER 11 WATCHDOG TIMER ................................................................................................. 139
11.1 Watchdog Timer Functions ................................................................................................ 139
11.2 Watchdog Timer Configuration .......................................................................................... 141
11.3 Watchdog Timer Control Registers ................................................................................... 141
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