SH7708 Datasheet, PDF (16/633 Pages) Renesas Technology Corp – SuperH™ RISC engine

12.3.3 Reading the Time ................................................................................................. 335
12.3.4 Alarm Function .................................................................................................... 336
12.3.5 Crystal Oscillator Circuit...................................................................................... 337
12.4 Usage Notes ....................................................................................................................... 338
12.4.1 Flag Clearing ........................................................................................................ 338
12.4.2 Register Writes during RTC Count ...................................................................... 338
12.4.3 Usage Note about Periodic Interrupt on RTC ...................................................... 338
Section 13 Serial Communication Interface (SCI) .................................................... 341
13.1 Overview............................................................................................................................ 341
13.1.1 Features ................................................................................................................ 341
13.1.2 Block Diagram...................................................................................................... 342
13.1.3 Pin Configuration ................................................................................................. 343
13.1.4 Register Configuration ......................................................................................... 343
13.2 Register Descriptions......................................................................................................... 344
13.2.1 Receive Shift Register (SCRSR).......................................................................... 344
13.2.2 Receive Data Register (SCRDR).......................................................................... 344
13.2.3 Transmit Shift Register (SCTSR) ........................................................................ 344
13.2.4 Transmit Data Register (SCTDR) ........................................................................ 345
13.2.5 Serial Mode Register (SCSMR) ........................................................................... 345
13.2.6 Serial Control Register (SCSCR) ......................................................................... 348
13.2.7 Serial Status Register (SCSSR)............................................................................ 351
13.2.8 Serial Port Register (SCSPTR) ............................................................................ 355
13.2.9 Bit Rate Register (SCBRR).................................................................................. 356
13.3 Operation ........................................................................................................................... 364
13.3.1 Overview .............................................................................................................. 364
13.3.2 Operation in Asynchronous Mode........................................................................ 366
13.3.3 Multiprocessor Communication ........................................................................... 376
13.3.4 Synchronous Operation ........................................................................................ 384
13.4 SCI Interrupt Sources ........................................................................................................ 394
13.5 Usage Notes ....................................................................................................................... 394
Section 14 Smart Card Interface...................................................................................... 399
14.1 Overview............................................................................................................................ 399
14.1.1 Features ................................................................................................................ 399
14.1.2 Block Diagram...................................................................................................... 400
14.1.3 Pin Configuration ................................................................................................. 401
14.1.4 Register Configuration ......................................................................................... 401
14.2 Register Descriptions......................................................................................................... 401
14.2.1 Smart Card Mode Register (SCSCMR) ............................................................... 402
14.2.2 Serial Status Register (SCSSR)............................................................................ 403
14.3 Operation ........................................................................................................................... 404
14.3.1 Overview .............................................................................................................. 404
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