Datasheet

Page xlviii of lvi R01UH0166EJ0600 Rev. 6.00
Mar 02, 2011
15.3.1 Watchdog Timer Operation .............................................................................. 717
15.3.2 Interval Timer Operation .................................................................................. 719
15.3.3 Timing of Setting Overflow Flag (OVF) .......................................................... 719
15.3.4 Timing of Setting of Watchdog Timer Overflow Flag (WOVF) ...................... 720
15.4 Interrupts........................................................................................................................... 721
15.5 Usage Notes...................................................................................................................... 721
15.5.1 Contention between Timer Counter (TCNT) Write and Increment.................. 721
15.5.2 Changing Value of PSS and CKS2 to CKS0 .................................................... 722
15.5.3 Switching between Watchdog Timer Mode and Interval Timer Mode............. 722
15.5.4 System Reset by WDTOVF Signal................................................................... 722
15.5.5 Internal Reset in Watchdog Timer Mode.......................................................... 722
15.5.6 OVF Flag Clearing in Interval Timer Mode ..................................................... 723
Section 16 Serial Communication Interface (SCI, IrDA)
(The H8S/2695 is not equipped with an IrDA function) ..................... 725
16.1 Overview .......................................................................................................................... 725
16.1.1 Features............................................................................................................. 725
16.1.2 Block Diagram.................................................................................................. 727
16.1.3 Pin Configuration.............................................................................................. 728
16.1.4 Register Configuration...................................................................................... 729
16.2 Register Descriptions........................................................................................................ 731
16.2.1 Receive Shift Register (RSR) ........................................................................... 731
16.2.2 Receive Data Register (RDR)........................................................................... 731
16.2.3 Transmit Shift Register (TSR).......................................................................... 732
16.2.4 Transmit Data Register (TDR).......................................................................... 732
16.2.5 Serial Mode Register (SMR) ............................................................................ 733
16.2.6 Serial Control Register (SCR) .......................................................................... 736
16.2.7 Serial Status Register (SSR) ............................................................................. 740
16.2.8 Bit Rate Register (BRR) ................................................................................... 744
16.2.9 Smart Card Mode Register (SCMR)................................................................. 752
16.2.10 IrDA Control Register (IrCR)........................................................................... 754
16.2.11 Module Stop Control Registers B and C (MSTPCRB, MSTPCRC) ................ 755
16.3 Operation .......................................................................................................................... 757
16.3.1 Overview........................................................................................................... 757
16.3.2 Operation in Asynchronous Mode .................................................................... 759
16.3.3 Multiprocessor Communication Function ........................................................ 770
16.3.4 Operation in Clocked Synchronous Mode ........................................................ 778
16.3.5 IrDA Operation................................................................................................. 787
16.4 SCI Interrupts.................................................................................................................... 790
16.5 Usage Notes...................................................................................................................... 792