D12320VF25V Datasheet, PDF (25/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

10.6.3 Contention between TCOR Write and Compare Match ...................................... 410
10.6.4 Contention between Compare Matches A and B ................................................. 411
10.6.5 Switching of Internal Clocks and TCNT Operation............................................. 411
10.6.6 Interrupts and Module Stop Mode ....................................................................... 413
Section 11 Watchdog Timer ..............................................................................415
11.1 Overview........................................................................................................................... 415
11.1.1 Features................................................................................................................ 415
11.1.2 Block Diagram ..................................................................................................... 416
11.1.3 Pin Configuration................................................................................................. 417
11.1.4 Register Configuration......................................................................................... 417
11.2 Register Descriptions ........................................................................................................ 418
11.2.1 Timer Counter (TCNT)........................................................................................ 418
11.2.2 Timer Control/Status Register (TCSR) ................................................................ 419
11.2.3 Reset Control/Status Register (RSTCSR) ............................................................ 421
11.2.4 Notes on Register Access..................................................................................... 422
11.3 Operation........................................................................................................................... 423
11.3.1 Operation in Watchdog Timer Mode ................................................................... 423
11.3.2 Operation in Interval Timer Mode ....................................................................... 425
11.3.3 Timing of Overflow Flag (OVF) Setting ............................................................. 426
11.3.4 Timing of Watchdog Timer Overflow Flag (WOVF) Setting.............................. 427
11.4 Interrupts ........................................................................................................................... 428
11.5 Usage Notes ...................................................................................................................... 428
11.5.1 Contention between Timer Counter (TCNT) Write and Increment ..................... 428
11.5.2 Changing Value of CKS2 to CKS0...................................................................... 429
11.5.3 Switching between Watchdog Timer Mode and Interval Timer Mode................ 429
11.5.4 System Reset by WDTOVF Signal...................................................................... 429
11.5.5 Internal Reset in Watchdog Timer Mode............................................................. 430
Section 12 Serial Communication Interface (SCI) ............................................431
12.1 Overview........................................................................................................................... 431
12.1.1 Features................................................................................................................ 431
12.1.2 Block Diagram ..................................................................................................... 433
12.1.3 Pin Configuration................................................................................................. 434
12.1.4 Register Configuration......................................................................................... 435
12.2 Register Descriptions ........................................................................................................ 436
12.2.1 Receive Shift Register (RSR) .............................................................................. 436
12.2.2 Receive Data Register (RDR) .............................................................................. 436
12.2.3 Transmit Shift Register (TSR) ............................................................................. 437
12.2.4 Transmit Data Register (TDR)............................................................................. 437
Rev.7.00 Feb. 14, 2007 page xxiii of xxxii
REJ09B0089-0700