SH7604 Datasheet, PDF (13/633 Pages) Hitachi Semiconductor – Hardware Manual

Section 11 16-Bit Free-Running Timer ......................................................................... 295
11.1 Overview............................................................................................................................ 295
11.1.1 Features ................................................................................................................. 295
11.1.2 Block Diagram...................................................................................................... 296
11.1.3 Pin Configuration.................................................................................................. 297
11.1.4 Register Configuration.......................................................................................... 297
11.2 Register Descriptions ......................................................................................................... 298
11.2.1 Free-Running Counter (FRC) ............................................................................... 298
11.2.2 Output Compare Registers A and B (OCRA and OCRB).................................... 298
11.2.3 Input Capture Register (ICR)................................................................................ 299
11.2.4 Timer Interrupt Enable Register (TIER)............................................................... 299
11.2.5 Free-Running Timer Control/Status Register (FTCSR) ....................................... 300
11.2.6 Timer Control Register (TCR).............................................................................. 302
11.2.7 Timer Output Compare Control Register (TOCR) ............................................... 303
11.3 CPU Interface..................................................................................................................... 304
11.4 Operation............................................................................................................................ 307
11.4.1 FRC Count Timing ............................................................................................... 307
11.4.2 Output Timing for Output Compare ..................................................................... 308
11.4.3 FRC Clear Timing ................................................................................................ 308
11.4.4 Input Capture Input Timing .................................................................................. 309
11.4.5 Input Capture Flag (ICF) Setting Timing ............................................................. 310
11.4.6 Output Compare Flag (OCFA, OCFB) Setting Timing........................................ 310
11.4.7 Timer Overflow Flag (OVF) Setting Timing ....................................................... 311
11.5 Interrupt Sources................................................................................................................ 312
11.6 Example of FRT Use.......................................................................................................... 312
11.7 Usage Notes ....................................................................................................................... 313
Section 12 Watchdog Timer (WDT) .............................................................................. 319
12.1 Overview............................................................................................................................ 319
12.1.1 Features ................................................................................................................. 319
12.1.2 Block Diagram...................................................................................................... 320
12.1.3 Pin Configuration.................................................................................................. 320
12.1.4 Register Configuration.......................................................................................... 321
12.2 Register Descriptions ......................................................................................................... 321
12.2.1 Watchdog Timer Counter (WTCNT).................................................................... 321
12.2.2 Watchdog Timer Control/Status Register (WTCSR) ........................................... 322
12.2.3 Reset Control/Status Register (RSTCSR) ............................................................ 323
12.2.4 Register Access..................................................................................................... 324
12.3 Operation............................................................................................................................ 326
12.3.1 Operation in Watchdog Timer Mode.................................................................... 326
12.3.2 Operation in Interval Timer Mode........................................................................ 328
12.3.3 Operation in Standby Mode.................................................................................. 328
12.3.4 Timing of Overflow Flag (OVF) Setting.............................................................. 329
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