NEC NEC PD78081(A), User Manual

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6.4 8-Bit Timer/Event Counters 5 and 6 Operations ............................................................ 90
6.4.1 Interval timer operations ...................................................................................................... 90
6.4.2 External event counter operation ......................................................................................... 93
6.4.3 Square-wave output ............................................................................................................ 94
6.4.4 PWM output operations ....................................................................................................... 96
6.5 Cautions on 8-Bit Timer/Event Counters 5 and 6 .......................................................... 100
CHAPTER 7 WATCHDOG TIMER ................................................................................................... 103
7.1 Watchdog Timer Functions .............................................................................................. 103
7.2 Watchdog Timer Configuration ....................................................................................... 105
7.3 Watchdog Timer Control Registers ................................................................................. 106
7.4 Watchdog Timer Operations ............................................................................................ 109
7.4.1 Watchdog timer operation .................................................................................................... 109
7.4.2 Interval timer operation ........................................................................................................ 110
CHAPTER 8 CLOCK OUTPUT CONTROL CIRCUIT ..................................................................... 111
8.1 Clock Output Control Circuit Functions ......................................................................... 111
8.2 Clock Output Control Circuit Configuration ................................................................... 112
8.3 Clock Output Function Control Registers ...................................................................... 113
CHAPTER 9 BUZZER OUTPUT CONTROL CIRCUIT .................................................................... 115
9.1 Buzzer Output Control Circuit Functions ....................................................................... 115
9.2 Buzzer Output Control Circuit Configuration ................................................................. 115
9.3 Buzzer Output Function Control Registers .................................................................... 116
CHAPTER 10 A/D CONVERTER ....................................................................................................... 119
10.1 A/D Converter Functions .................................................................................................. 119
10.2 A/D Converter Configuration ........................................................................................... 119
10.3 A/D Converter Control Registers ..................................................................................... 122
10.4 A/D Converter Operations ................................................................................................ 126
10.4.1 Basic operations of A/D converter ....................................................................................... 126
10.4.2 Input voltage and conversion results ................................................................................... 128
10.4.3 A/D converter operating mode ............................................................................................. 129
10.5 A/D Converter Cautions ................................................................................................... 131
CHAPTER 11 SERIAL INTERFACE CHANNEL 2 ............................................................................ 135
11.1 Serial Interface Channel 2 Functions .............................................................................. 135
11.2 Serial Interface Channel 2 Configuration ....................................................................... 136
11.3 Serial Interface Channel 2 Control Registers ................................................................. 140
11.4 Serial Interface Channel 2 Operation .............................................................................. 148
11.4.1 Operation stop mode ........................................................................................................... 148
11.4.2 Asynchronous serial interface (UART) mode ...................................................................... 150
11.4.3 3-wire serial I/O mode ......................................................................................................... 163
CHAPTER 12 INTERRUPT FUNCTION ............................................................................................ 171
12.1 Interrupt Function Types .................................................................................................. 171
12.2 Interrupt Sources and Configuration .............................................................................. 172
12.3 Interrupt Function Control Registers .............................................................................. 175