9.3.4 Setting of Overflow Flag (OVF) .......................................................................... 205
9.4 Interrupts............................................................................................................................ 206
9.5 Sample Application ........................................................................................................... 206
9.6 Application Notes.............................................................................................................. 207
9.6.1 Contention between TCNT Write and Clear ....................................................... 207
9.6.2 Contention between TCNT Write and Increment ............................................... 208
9.6.3 Contention between TCOR Write and Compare-Match ..................................... 209
9.6.4 Contention between Compare-Match A and Compare-Match B ......................... 210
9.6.5 Increment Caused by Changing of Internal Clock Source ................................... 210
Section 10 PWM Timers.................................................................................................... 213
10.1 Overview............................................................................................................................ 213
10.1.1 Features ................................................................................................................ 213
10.1.2 Block Diagram...................................................................................................... 214
10.1.3 Input and Output Pins........................................................................................... 214
10.1.4 Register Configuration ......................................................................................... 215
10.2 Register Descriptions......................................................................................................... 215
10.2.1 Timer Counter (TCNT) ........................................................................................ 215
10.2.2 Duty Register (DTR)............................................................................................ 216
10.2.3 Timer Control Register (TCR) ............................................................................. 217
10.3 Operation ........................................................................................................................... 219
10.3.1 Timer Incrementation ........................................................................................... 219
10.3.2 PWM Operation.................................................................................................... 220
10.4 Application Notes.............................................................................................................. 221
Section 11 Watchdog Timer ............................................................................................. 223
11.1 Overview............................................................................................................................ 223
11.1.1 Features ................................................................................................................ 223
11.1.2 Block Diagram...................................................................................................... 224
11.1.3 Register Configuration ......................................................................................... 224
11.2 Register Descriptions......................................................................................................... 225
11.2.1 Timer Counter (TCNT) ........................................................................................ 225
11.2.2 Timer Control/Status Register (TCSR)................................................................ 225
11.2.3 System Control Register (SYSCR) ...................................................................... 227
11.2.4 Register Access .................................................................................................... 228
11.3 Operation ........................................................................................................................... 229
11.3.1 Watchdog Timer Mode ........................................................................................ 229
11.3.2 Interval Timer Mode ............................................................................................ 230
11.3.3 Setting the Overflow Flag .................................................................................... 230
11.4 Application Notes.............................................................................................................. 231
11.4.1 Contention between TCNT Write and Increment ................................................ 231
11.4.2 Changing the Clock Select Bits (CKS2 to CKS0)................................................ 231
11.4.3 Recovery from Software Standby Mode.............................................................. 231
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RENESAS [ RENESAS TECHNOLOGY CORP ]
