HD6417751RBP240V Datasheet, PDF (65/1226 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 11 Realtime Clock (RTC) .................................................................................. 291
11.1 Overview........................................................................................................................... 291
11.1.1 Features................................................................................................................ 291
11.1.2 Block Diagram ..................................................................................................... 292
11.1.3 Pin Configuration................................................................................................. 293
11.1.4 Register Configuration......................................................................................... 293
11.2 Register Descriptions ........................................................................................................ 295
11.2.1 64 Hz Counter (R64CNT).................................................................................... 295
11.2.2 Second Counter (RSECCNT) .............................................................................. 296
11.2.3 Minute Counter (RMINCNT) .............................................................................. 296
11.2.4 Hour Counter (RHRCNT).................................................................................... 297
11.2.5 Day-of-Week Counter (RWKCNT)..................................................................... 297
11.2.6 Day Counter (RDAYCNT) .................................................................................. 298
11.2.7 Month Counter (RMONCNT) ............................................................................. 298
11.2.8 Year Counter (RYRCNT) .................................................................................... 299
11.2.9 Second Alarm Register (RSECAR) ..................................................................... 300
11.2.10 Minute Alarm Register (RMINAR) ..................................................................... 300
11.2.11 Hour Alarm Register (RHRAR)........................................................................... 301
11.2.12 Day-of-Week Alarm Register (RWKAR)............................................................ 301
11.2.13 Day Alarm Register (RDAYAR) ......................................................................... 302
11.2.14 Month Alarm Register (RMONAR) .................................................................... 303
11.2.15 RTC Control Register 1 (RCR1).......................................................................... 303
11.2.16 RTC Control Register 2 (RCR2).......................................................................... 305
11.2.17 RTC Control Register (RCR3) and Year-Alarm Register (RYRAR)
(SH7751R Only) .................................................................................................. 308
11.3 Operation........................................................................................................................... 309
11.3.1 Time Setting Procedures ...................................................................................... 309
11.3.2 Time Reading Procedures .................................................................................... 311
11.3.3 Alarm Function .................................................................................................... 312
11.4 Interrupts ........................................................................................................................... 313
11.5 Usage Notes ...................................................................................................................... 313
11.5.1 Register Initialization........................................................................................... 313
11.5.2 Carry Flag and Interrupt Flag in Standby Mode .................................................. 313
11.5.3 Crystal Oscillation Circuit ................................................................................... 313
Section 12 Timer Unit (TMU) ......................................................................................... 315
12.1 Overview........................................................................................................................... 315
12.1.1 Features................................................................................................................ 315
12.1.2 Block Diagram ..................................................................................................... 316
12.1.3 Pin Configuration................................................................................................. 316
Rev.4.00 Oct. 10, 2008 Page lxiii of xcviii
REJ09B0370-0400