Datasheet

Table Of Contents
REJ09B0140-0900 Rev. 9.00 Page xxi of liv
Sep 16, 2010
11.5.2 Setting of Compare Match Flags CMFA and CMFB .......................................358
11.5.3 Timer Output Timing........................................................................................ 358
11.5.4 Timing of Compare Match Clear...................................................................... 359
11.5.5 Timing of TCNT External Reset....................................................................... 359
11.5.6 Timing of Overflow Flag (OVF) Setting ..........................................................360
11.6 Operation with Cascaded Connection............................................................................... 361
11.6.1 16-Bit Counter Mode........................................................................................ 361
11.6.2 Compare Match Count Mode............................................................................ 361
11.7 Interrupts........................................................................................................................... 362
11.7.1 Interrupt Sources and DTC Activation ............................................................. 362
11.7.2 A/D Converter Activation.................................................................................363
11.8 Usage Notes...................................................................................................................... 363
11.8.1 Contention between TCNT Write and Clear.....................................................363
11.8.2 Contention between TCNT Write and Increment ............................................. 364
11.8.3 Contention between TCOR Write and Compare Match ................................... 365
11.8.4 Contention between Compare Matches A and B .............................................. 366
11.8.5 Switching of Internal Clocks and TCNT Operation.......................................... 366
11.8.6 Mode Setting with Cascaded Connection .........................................................368
11.8.7 Module Stop Mode Setting ............................................................................... 368
Section 12 Watchdog Timer (WDT)............................................................................... 369
12.1 Features............................................................................................................................. 369
12.2 Register Descriptions........................................................................................................ 370
12.2.1 Timer Counter (TCNT)..................................................................................... 370
12.2.2 Timer Control/Status Register (TCSR)............................................................. 370
12.2.3 Reset Control/Status Register (RSTCSR)......................................................... 372
12.3 Operation .......................................................................................................................... 373
12.3.1 Watchdog Timer Mode..................................................................................... 373
12.3.2 Timing of Setting of Watchdog Timer Overflow Flag (WOVF)...................... 374
12.3.3 Interval Timer Mode......................................................................................... 375
12.3.4 Timing of Setting of Overflow Flag (OVF)...................................................... 375
12.4 Interrupts........................................................................................................................... 376
12.5 Usage Notes...................................................................................................................... 376
12.5.1 Notes on Register Access.................................................................................. 376
12.5.2 Contention between Timer Counter (TCNT) Write and Increment.................. 378
12.5.3 Changing Value of CKS2 to CKS0................................................................... 378
12.5.4 Switching between Watchdog Timer Mode and Interval Timer Mode............. 378
12.5.5 Internal Reset in Watchdog Timer Mode.......................................................... 379
12.5.6 OVF Flag Clearing in Interval Timer Mode ..................................................... 379