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CHAPTER 8. A-D CONVERTER
8.1 Overview ..................................................................................................................................8-2
8.2 Block description .................................................................................................................. 8-3
8.2.1 A-D control register 0 ................................................................................................... 8-4
8.2.2 A-D control register 1 ................................................................................................... 8-6
8.2.3 A-D register i (i = 0 to 7) ............................................................................................. 8-7
8.2.4 A-D conversion interrupt control register .................................................................... 8-8
8.2.5 Port P7 direction register ............................................................................................. 8-9
8.4 Absolute accuracy and differential non-linearity error .............................................. 8-13
8.4.1 Absolute accuracy ....................................................................................................... 8-13
8.4.2 Differential non-linearity error ..................................................................................... 8-14
8.5 Comparison voltage in 8-bit mode ................................................................................. 8-15
8.6 One-shot mode .................................................................................................................... 8-16
8.6.1 Settings for one-shot mode ........................................................................................ 8-16
8.6.2 One-shot mode operation description ....................................................................... 8-18
8.7 Repeat mode ........................................................................................................................ 8-20
8.7.1 Settings for repeat mode ............................................................................................ 8-20
8.7.2 Repeat mode operation description .......................................................................... 8-22
8.8 Single sweep mode ............................................................................................................ 8-23
8.8.1 Settings for single sweep mode ................................................................................ 8-23
8.8.2 Single sweep mode operation description ................................................................ 8-25
8.9 Repeat sweep mode 0 ....................................................................................................... 8-27
8.9.1 Settings for repeat sweep mode 0 ............................................................................ 8-27
8.9.2 Repeat sweep mode 0 operation description .......................................................... 8-29
8.10 Repeat sweep mode 1 ..................................................................................................... 8-31
8.10.1 Settings for repeat sweep mode 1 .......................................................................... 8-31
8.10.2 Repeat sweep mode 1 operation description ........................................................ 8-34
CHAPTER 9. WATCHDOG TIMER
9.1 Block description .................................................................................................................. 9-2
9.1.1 Watchdog timer .............................................................................................................. 9-3
9.1.2 Watchdog timer frequency select register .................................................................. 9-4
9.2 Operation description .......................................................................................................... 9-5
9.2.1 Basic operation .............................................................................................................. 9-5
9.2.2 Operation in Stop mode ............................................................................................... 9-7
9.2.3 Operation in Hold state ................................................................................................. 9-7
9.3 Precautions when using watchdog timer ........................................................................ 9-8
10.1 Clock generating circuit .................................................................................................. 10-2
10.2 Operation description ...................................................................................................... 10-3
10.2.1 Termination by interrupt request occurrence ......................................................... 10-4
10.2.2 Termination by hardware reset ................................................................................ 10-5
10.3 Precautions for Stop mode ............................................................................................ 10-6
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7751 Group User's Manual
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