UPD780957 데이터 시트보기 (PDF) - NEC => Renesas Technology
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UPD780957 Datasheet PDF : 326 Pages
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4.2 Port Configuration .........................................................................................................................79
4.2.1 Port 0 ................................................................................................................................................79
4.2.2 Port 2 ................................................................................................................................................81
4.2.3 Port 3 ................................................................................................................................................83
4.2.4 Port 4 ................................................................................................................................................86
4.2.5 Port 5 ................................................................................................................................................87
4.2.6 Port 6 ................................................................................................................................................89
4.2.7 Port 7 ................................................................................................................................................91
4.2.8 Port 8 ................................................................................................................................................92
4.2.9 Port 9 ................................................................................................................................................93
4.3 Port Function Control Registers ..................................................................................................94
4.4 Port Function Operations .............................................................................................................99
4.4.1 Writing to I/O ports............................................................................................................................99
4.4.2 Reading from I/O ports .....................................................................................................................99
4.4.3 Arithmetic operations on I/O ports ....................................................................................................99
4.5 Mask Option Selection ................................................................................................................100
CHAPTER 5 CLOCK GENERATOR ......................................................................................................101
5.1 Clock Generator Functions ........................................................................................................101
5.2 Clock Generator Configuration ..................................................................................................101
5.3 Clock Generator Control Registers ...........................................................................................104
5.4 Main System Clock Oscillator ....................................................................................................106
5.4.1 Main system clock oscillator ...........................................................................................................106
5.4.2 Subsystem clock 1 oscillator...........................................................................................................109
5.4.3 Divider ............................................................................................................................................111
5.4.4 Subsystem clock 2 oscillator...........................................................................................................111
5.5 Clock Generator Operations.......................................................................................................114
5.5.1 Main system clock operations.........................................................................................................115
5.5.2 Subsystem clock 1 operations ........................................................................................................115
5.6 Changing System Clock and CPU Clock Settings ...................................................................116
5.6.1 Time required for switchover between system clock and CPU clock ..............................................116
5.6.2 System clock and CPU clock switching procedure .........................................................................117
CHAPTER 6 REAL-TIME OUTPUT FUNCTION....................................................................................118
6.1 Real-Time Output Functions ......................................................................................................118
6.2 Real-Time Output Configuration ................................................................................................118
6.3 Real-Time Output Port Control Registers .................................................................................120
6.4 Real-Time Output Operation.......................................................................................................121
6.5 Real-Time Output Function Operating Cautions......................................................................123
CHAPTER 7 16-BIT TIMER/EVENT COUNTER 0...............................................................................124
7.1 Outline of 16-Bit Timer/Event Counter 0 ...................................................................................124
7.2 Functions of 16-Bit Timer/Event Counter 0 ..............................................................................124
7.3 Configuration of 16-Bit Timer/Event Counter 0 ........................................................................126
7.4 Control Registers of 16-Bit Timer/Event Counter 0 .................................................................129
7.5 Operations of 16-Bit Timer/Event Counter 0.............................................................................135
7.5.1 Interval timer operation ...................................................................................................................135
User’s Manual U13655EJ2V1UD
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