r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 22

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 14 Watchdog Timer (WDT) ................................................................. 813
14.1 Features.............................................................................................................................. 813
14.2 Input/Output Pin ................................................................................................................ 814
14.3 Register Descriptions ......................................................................................................... 815
14.4 Operation ........................................................................................................................... 818
14.5 Interrupt Source ................................................................................................................. 820
14.6 Usage Notes ....................................................................................................................... 821
Section 15 Serial Communication Interface (SCI, IrDA) ................................. 825
15.1 Features.............................................................................................................................. 825
15.2 Input/Output Pins............................................................................................................... 828
15.3 Register Descriptions ......................................................................................................... 829
15.4 Operation in Asynchronous Mode ..................................................................................... 859
Rev. 1.00 Sep. 19, 2008 Page xxii of xxx
13.8.8 Interrupts in Module Stop Mode........................................................................... 811
14.3.1 Timer Counter (TCNT)......................................................................................... 815
14.3.2 Timer Control/Status Register (TCSR)................................................................. 815
14.3.3 Reset Control/Status Register (RSTCSR)............................................................. 817
14.4.1 Watchdog Timer Mode......................................................................................... 818
14.4.2 Interval Timer Mode............................................................................................. 819
14.6.1 Notes on Register Access ..................................................................................... 821
14.6.2 Contention between Timer Counter (TCNT) Write and Increment ...................... 823
14.6.3 Changing Value of CKS2 to CKS0 ...................................................................... 823
14.6.4 Switching between Watchdog Timer Mode and Interval Timer Mode................. 823
14.6.5 Internal Reset in Watchdog Timer Mode.............................................................. 824
14.6.6 System Reset by WDTOVF Signal....................................................................... 824
15.3.1 Receive Shift Register (RSR) ............................................................................... 830
15.3.2 Receive Data Register (RDR)............................................................................... 830
15.3.3 Transmit Data Register (TDR).............................................................................. 831
15.3.4 Transmit Shift Register (TSR) .............................................................................. 831
15.3.5 Serial Mode Register (SMR) ................................................................................ 831
15.3.6 Serial Control Register (SCR) .............................................................................. 835
15.3.7 Serial Status Register (SSR) ................................................................................. 840
15.3.8 Smart Card Mode Register (SCMR)..................................................................... 848
15.3.9 Bit Rate Register (BRR) ....................................................................................... 849
15.3.10 IrDA Control Register (IrCR)............................................................................... 856
15.3.11 Serial Extension Mode Register (SEMR) ............................................................. 857
15.4.1 Data Transfer Format............................................................................................ 859
15.4.2 Receive Data Sampling Timing and
Reception Margin in Asynchronous Mode ........................................................... 861