SH7144_08 Datasheet, PDF (31/930 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series

Section 12 Watchdog Timer (WDT)
Figure 12.1 Block Diagram of WDT ..........................................................................................380
Figure 12.2 Operation in Watchdog Timer Mode.......................................................................386
Figure 12.3 Operation in Interval Timer Mode...........................................................................386
Figure 12.4 Timing of Setting OVF............................................................................................387
Figure 12.5 Timing of Setting WOVF ........................................................................................388
Figure 12.6 Writing to TCNT and TCSR ...................................................................................389
Figure 12.7 Writing to RSTCSR.................................................................................................390
Figure 12.8 Contention between TCNT Write and Increment....................................................390
Figure 12.9 Example of System Reset Circuit Using WDTOVF Signal ....................................391
Section 13 Serial Communication Interface (SCI)
Figure 13.1 Block Diagram of SCI .............................................................................................394
Figure 13.2 Data Format in Asynchronous Communication
(Example with 8-Bit Data, Parity, Two Stop Bits) ..................................................426
Figure 13.3 Receive Data Sampling Timing in Asynchronous Mode ........................................428
Figure 13.4 Relation between Output Clock and Transmit Data Phase
(Asynchronous Mode) .............................................................................................429
Figure 13.5 Sample SCI Initialization Flowchart .......................................................................430
Figure 13.6 Example of Operation in Transmission in Asynchronous Mode
(Example with 8-Bit Data, Parity, One Stop Bit).....................................................431
Figure 13.7 Sample Serial Transmission Flowchart ...................................................................432
Figure 13.8 Example of SCI Operation in Reception (Example with 8-Bit Data, Parity,
One Stop Bit) ...........................................................................................................433
Figure 13.9 Sample Serial Reception Data Flowchart (1) ..........................................................435
Figure 13.9 Sample Serial Reception Data Flowchart (2) ..........................................................436
Figure 13.10 Example of Communication Using Multiprocessor Format
(Transmission of Data H'AA to Receiving Station A) ..........................................438
Figure 13.11 Sample Multiprocessor Serial Transmission Flowchart ........................................439
Figure 13.12 Example of SCI Operation in Reception (Example with 8-Bit Data,
Multiprocessor Bit, One Stop Bit) .........................................................................440
Figure 13.13 Sample Multiprocessor Serial Reception Flowchart (1) ........................................441
Figure 13.13 Sample Multiprocessor Serial Reception Flowchart (2) ........................................442
Figure 13.14 Data Format in Clocked Synchronous Communication (For LSB-First) ..............443
Figure 13.15 Sample SCI Initialization Flowchart .....................................................................444
Figure 13.16 Sample SCI Transmission Operation in Clocked Synchronous Mode ..................446
Figure 13.17 Sample Serial Transmission Flowchart .................................................................446
Figure 13.18 Example of SCI Operation in Reception ...............................................................447
Figure 13.19 Sample Serial Reception Flowchart.......................................................................448
Figure 13.20 Sample Flowchart of Simultaneous Serial Transmit and Receive Operations.......450
Figure 13.21 Example of Pin Connections for Smart Card Interface .........................................451
Rev.4.00 Mar. 27, 2008, Page xxxi of xliv
REJ09B0108-0400