UPD78F9234MC-5A4-A Datasheet, PDF (11/419 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

3.4.5 Register indirect addressing.............................................................................................................. 49
3.4.6 Based addressing ............................................................................................................................. 50
3.4.7 Stack addressing............................................................................................................................... 51
CHAPTER 4 PORT FUNCTIONS........................................................................................................... 52
4.1 Functions of Ports........................................................................................................................ 52
4.2 Port Configuration........................................................................................................................ 54
4.2.1 Port 0 ................................................................................................................................................ 55
4.2.2 Port 2 ................................................................................................................................................ 56
4.2.3 Port 3 ................................................................................................................................................ 57
4.2.4 Port 4 ................................................................................................................................................ 60
4.2.5 Port 12 .............................................................................................................................................. 63
4.2.6 Port 13 .............................................................................................................................................. 65
4.3 Registers Controlling Port Functions ........................................................................................ 66
4.4 Operation of Port Function ......................................................................................................... 71
4.4.1 Writing to I/O port .............................................................................................................................. 71
4.4.2 Reading from I/O port........................................................................................................................ 71
4.4.3 Operations on I/O port....................................................................................................................... 71
CHAPTER 5 CLOCK GENERATORS................................................................................................... 72
5.1 Functions of Clock Generators................................................................................................... 72
5.1.1 System clock oscillators .................................................................................................................... 72
5.1.2 Clock oscillator for interval time generation....................................................................................... 72
5.2 Configuration of Clock Generators ............................................................................................ 73
5.3 Registers Controlling Clock Generators.................................................................................... 75
5.4 System Clock Oscillators ............................................................................................................ 78
5.4.1 High-speed internal oscillator ............................................................................................................ 78
5.4.2 Crystal/ceramic oscillator .................................................................................................................. 78
5.4.3 External clock input circuit................................................................................................................. 80
5.4.4 Prescaler........................................................................................................................................... 80
5.5 Operation of CPU Clock Generator ............................................................................................ 81
5.6 Operation of Clock Generator Supplying Clock to Peripheral Hardware............................... 86
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00............................................................................. 88
6.1 Functions of 16-bit Timer/Event Counter 00.............................................................................. 88
6.2 Configuration of 16-bit Timer/Event Counter 00 ....................................................................... 89
6.3 Registers to Control 16-bit Timer/Event Counter 00 ................................................................ 93
6.4 Operation of 16-bit Timer/Event Counter 00.............................................................................. 99
6.4.1 Interval timer operation ..................................................................................................................... 99
6.4.2 External event counter operation .................................................................................................... 101
6.4.3 Pulse width measurement operations ............................................................................................. 104
6.4.4 Square-wave output operation ........................................................................................................ 112
6.4.5 PPG output operations.................................................................................................................... 114
6.4.6 One-shot pulse output operation ..................................................................................................... 117
6.5 Cautions Related to 16-bit Timer/Event Counter 00 ...............................................................122
CHAPTER 7 8-BIT TIMER 80..............................................................................................................129
7.1 Function of 8-bit Timer 80 .........................................................................................................129
User’s Manual U17446EJ5V0UD
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