Electronics America Computer Hardware User Manual

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Contents
7-106 Interrupt Request Handling for Pulse Width Calculation .........................................................197
7-107 Example of PWM Signal Output by 8-Bit Timer/Counter 2 .....................................................197
7-108 Setting of Control Registers for PWM Output Operation ........................................................198
7-109 Setting Procedure for PWM Output ............................................................................................199
7-110 Changing Duty Factor of PWM Output .......................................................................................199
7-111 Example of PPG Signal Output by 8-Bit Timer/Counter 2 .......................................................199
7-112 Setting of Control Registers for PPG Output Operation ..........................................................200
7-113 Setting Procedure for PPG Output ..............................................................................................201
7-114 Changing Duty Factor of PPG Output .........................................................................................201
7-115 External Event Counter Operation ..............................................................................................201
7-116 Setting of Control Registers for External Event Counter Operation ......................................202
7-117 Setting Procedure for External Event Counter Operation .......................................................202
7-118 One-Shot Timer Operation ...........................................................................................................203
7-119 Setting of Control Registers for One-Shot Timer Operation ...................................................203
7-120 Setting Procedure for One-Shot Timer Operation ....................................................................204
7-121 Procedure for Starting an Additional One-Shot Timer Operation ..........................................204
7-122 Block Diagram of 8-Bit Timer/Counter 3 ....................................................................................206
7-123 Format of Timer Control Register 0 (TMC0) ..............................................................................207
7-124 Format of Prescaler Mode Register 0 (PRM0) ...........................................................................207
7-125 Basic Operation of 8-Bit Timer 3 (TM3)......................................................................................208
7-126 TM3 Cleared by a Coincidence with Compare Register (CR30) ..............................................209
7-127 Clear Operation When the CE3 Bit Is Reset to 0 .......................................................................209
7-128 Compare Operation .......................................................................................................................211
7-129 Timing of Interval Timer Operation ............................................................................................211
7-130 Setting of Control Registers for Interval Timer Operation ......................................................212
7-131 Setting Procedure for Interval Timer Operation .......................................................................212
7-132 Count Start Operation ...................................................................................................................214
7-133 Count Operation Stop ...................................................................................................................214
7-134 Timing of Count Operation Stop and Restart............................................................................214
7-135 Example of PWM Output Signal with a 100% Duty Factor......................................................216
7-136 Example of PPG Output Signal with a 100% Duty Factor ........................................................217
7-137 Example of PPG Output Period Made Longer ...........................................................................218
7-138 Interrupt Request Generation Using External Event Counter .................................................220
7-139 Example Where Input of No Valid Edge Cannot Be Distinguished from Input of
Only One Valid Edge with External Event Counter ..................................................................220
7-140 How to Distinguish Input of No Valid Edge from Input of Only One Valid Edge
with External Event Counter ........................................................................................................221
7-141 Interrupt Generation Timing Change by an Erroneously Detected Edge ..............................223
8-1 A/D Converter Configuration .......................................................................................................226
8-2 Example of Capacitors Connected to the A/D Converter Pins ................................................ 227
8-3 A/D Converter Mode Register (ADM) Format ............................................................................229
8-4 Basic A/D Converter Operation....................................................................................................230
8-5 Relations between Analog Input Voltages and A/D Conversion Results...............................231
8-6 Select Mode Operation Timing ...................................................................................................232
8-7 Scan Mode Operation Timing......................................................................................................233
8-8 Software-Started Select-Mode A/D Conversion ........................................................................234
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