SH7713 datasheet(19/904 Pages) RENESAS

19 / 904 page

Rev.1.50 Aug. 30, 2006 Page xix of xl

15.2

Input/Output Pins ...............................................................................................................507

15.3

Register Descriptions ......................................................................................................... 507

15.3.1 64-Hz Counter (R64CNT) .................................................................................... 508

15.3.2 Second Counter (RSECCNT) ............................................................................... 508

15.3.3 Minute Counter (RMINCNT) ............................................................................... 509

15.3.4 Hour Counter (RHRCNT)..................................................................................... 509

15.3.5 Day of Week Counter (RWKCNT) ...................................................................... 510

15.3.6 Date Counter (RDAYCNT) .................................................................................. 512

15.3.7 Month Counter (RMONCNT) .............................................................................. 512

15.3.8 Year Counter (RYRCNT) ..................................................................................... 513

15.3.9 Second Alarm Register (RSECAR) ...................................................................... 514

15.3.10 Minute Alarm Register (RMINAR) ...................................................................... 514

15.3.11 Hour Alarm Register (RHRAR) ........................................................................... 515

15.3.12 Day of Week Alarm Register (RWKAR) ............................................................. 516

15.3.13 Date Alarm Register (RDAYAR) ......................................................................... 517

15.3.14 Month Alarm Register (RMONAR) ..................................................................... 518

15.3.15 Year Alarm Register (RYRAR)............................................................................ 519

15.3.16 RTC Control Register 1 (RCR1)........................................................................... 520

15.3.17 RTC Control Register 2 (RCR2)........................................................................... 522

15.3.18 RTC Control Register 3 (RCR3)........................................................................... 524

15.4

Operation ........................................................................................................................... 525

15.4.1 Initial Settings of Registers after Power-On ......................................................... 525

15.4.2 Setting Time.......................................................................................................... 525

15.4.3 Reading Time........................................................................................................ 525

15.4.4 Alarm Function ..................................................................................................... 527

15.4.5 Crystal Oscillator Circuit ...................................................................................... 528

15.5

Usage Notes ....................................................................................................................... 529

15.5.1 Register Writing during RTC Count..................................................................... 529

15.5.2 Use of Realtime Clock (RTC) Periodic Interrupts ................................................ 529

15.5.3 Transition to Standby Mode after Setting Register............................................... 529

15.5.4 Usage Note about RTC Power Supply.................................................................. 530

Section 16 Serial Communication Interface with FIFO (SCIF) ........................531

16.1

Features.............................................................................................................................. 531

16.2

Input/Output Pins ...............................................................................................................534

16.3

Register Descriptions ......................................................................................................... 535

16.3.1 Receive Shift Register (SCRSR)........................................................................... 536

16.3.2 Receive FIFO Data Register (SCFRDR) .............................................................. 536

16.3.3 Transmit Shift Register (SCTSR) ......................................................................... 537

16.3.4 Transmit FIFO Data Register (SCFTDR) ............................................................. 537

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