H83437 datasheet(21/753 Pages) RENESAS

21 / 753 page

9.2

Register Descriptions......................................................................................................... 192

9.2.1

Timer Counter (TCNT) ........................................................................................ 192

9.2.2

Time Constant Registers A and B (TCORA and TCORB).................................. 192

9.2.3

Timer Control Register (TCR) ............................................................................. 193

9.2.4

Timer Control/Status Register (TCSR) ................................................................ 196

9.2.5

Serial/Timer Control Register (STCR) ................................................................ 198

9.3

Operation ........................................................................................................................... 199

9.3.1

TCNT Increment Timing...................................................................................... 199

9.3.2

Compare-Match Timing ....................................................................................... 201

9.3.3

External Reset of TCNT ....................................................................................... 203

9.3.4

Setting of TCSR Overflow Flag (OVF) ............................................................... 203

9.4

Interrupts............................................................................................................................ 204

9.5

Sample Application ........................................................................................................... 204

9.6

Application Notes .............................................................................................................. 205

9.6.1

Contention between TCNT Write and Clear........................................................ 205

9.6.2

Contention between TCNT Write and Increment ................................................ 206

9.6.3

Contention between TCOR Write and Compare-Match ...................................... 207

9.6.4

Contention between Compare-Match A and Compare-Match B ......................... 208

9.6.5

Increment Caused by Changing of Internal Clock Source ................................... 208

Section 10 PWM Timers.................................................................................................... 211

10.1

Overview............................................................................................................................ 211

10.1.1 Features ................................................................................................................ 211

10.1.2 Block Diagram...................................................................................................... 212

10.1.3 Input and Output Pins ........................................................................................... 212

10.1.4 Register Configuration ......................................................................................... 213

10.2

Register Descriptions......................................................................................................... 213

10.2.1 Timer Counter (TCNT) ........................................................................................ 213

10.2.2 Duty Register (DTR) ............................................................................................ 214

10.2.3 Timer Control Register (TCR) ............................................................................. 215

10.3

Operation ........................................................................................................................... 217

10.3.1 Timer Increment ................................................................................................... 217

10.3.2 PWM Operation.................................................................................................... 218

10.4

Application Notes .............................................................................................................. 219

Section 11 Watchdog Timer ............................................................................................. 221

11.1

Overview............................................................................................................................ 221

11.1.1 Features ................................................................................................................ 221

11.1.2 Block Diagram...................................................................................................... 222

11.1.3 Output Pin ............................................................................................................ 222

11.1.4 Register Configuration ......................................................................................... 223

11.2

Register Descriptions......................................................................................................... 223

11.2.1 Timer Counter (TCNT) ........................................................................................ 223

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