Filter
Top Products
R01UH0134EJ0400 Rev. 4.00 Page xix of xl
Sep 24, 2014
11.8.1 Operating Modes ............................................................................................... 616
11.8.2 Reset Start Operation ........................................................................................ 616
11.8.3 Operation in Case of Re-Setting Due to Error during Operation, etc. .............. 617
11.8.4 Overview of Initialization Procedures and Mode Transitions in Case of
Error during Operation, etc. .............................................................................. 618
Section 12 Compare Match Timer ..................................................................... 649
12.1 Features ............................................................................................................................. 649
12.2 Register Descriptions ........................................................................................................ 650
12.2.1 Compare Match Timer Start Register (CMSTR) .............................................. 651
12.2.2 Compare Match Timer Control/Status Register (CMCSR) .............................. 652
12.2.3 Compare Match Counter (CMCNT) ................................................................. 654
12.2.4 Compare Match Constant Register (CMCOR) ................................................. 654
12.3 Operation .......................................................................................................................... 655
12.3.1 Interval Count Operation .................................................................................. 655
12.3.2 CMCNT Count Timing ..................................................................................... 655
12.4 Interrupts ........................................................................................................................... 656
12.4.1 Interrupt Sources and DMA Transfer Requests ................................................ 656
12.4.2 Timing of Compare Match Flag Setting ........................................................... 656
12.4.3 Timing of Compare Match Flag Clearing ......................................................... 657
12.5 Usage Notes ...................................................................................................................... 658
12.5.1 Conflict between Write and Compare-Match Processes of CMCNT ............... 658
12.5.2 Conflict between Word-Write and Count-Up Processes of CMCNT ............... 659
12.5.3 Conflict between Byte-Write and Count-Up Processes of CMCNT ................. 660
12.5.4 Compare Match between CMCNT and CMCOR ............................................. 660
Section 13 Watchdog Timer .............................................................................. 661
13.1 Features ............................................................................................................................. 661
13.2 Input/Output Pin ............................................................................................................... 662
13.3 Register Descriptions ........................................................................................................ 663
13.3.1 Watchdog Timer Counter (WTCNT) ................................................................ 663
13.3.2 Watchdog Timer Control/Status Register (WTCSR) ........................................ 664
13.3.3 Watchdog Reset Control/Status Register (WRCSR) ........................................ 667
13.3.4 Notes on Register Access .................................................................................. 668
13.4 Usage ................................................................................................................................ 670
13.4.1 Canceling Software Standby Mode ................................................................... 670
13.4.2 Using Watchdog Timer Mode........................................................................... 670
13.4.3 Using Interval Timer Mode .............................................................................. 672
13.5 Usage Notes ...................................................................................................................... 673
13.5.1 Timer Variation ................................................................................................. 673