SH7763 Datasheet, PDF (829/2026 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 22 Realtime Clock (RTC)
Table 22.3 Register State in Each Operating Mode
Name
Abbrevia- Initial
tion
Value
Power-On Manual
Reset
Reset
Sleep Standby
64 Hz counter
R64CNT Undefined Counts Counts Counts Counts
Second counter
RSECCNT Undefined Counts Counts Counts Counts
Minute counter
RMINCNT Undefined Counts Counts Counts Counts
Hour counter
RHRCNT Undefined Counts Counts Counts Counts
Day-of-week counter RWKCNT Undefined Counts Counts Counts Counts
Day counter
RDAYCNT Undefined Counts Counts Counts Counts
Month counter
RMONCNT Undefined Counts Counts Counts Counts
Year counter
RYRCNT
Second alarm register RSECAR
Minute alarm register RMINAR
Hour alarm register RHRAR
Day-of-week alarm
register
RWKAR
Undefined
Undefined*¹
Undefined*¹
Undefined*¹
Undefined*¹
Counts Counts
Initialized*¹ Retained
Initialized*¹ Retained
Initialized*¹ Retained
Initialized*¹ Retained
Counts Counts
Retained Retained
Retained Retained
Retained Retained
Retained Retained
Day alarm register RDAYAR
Month alarm register RMONAR
RTC control register 1 RCR1
RTC control register 2 RCR2
Undefined*¹
Undefined*¹
H'00*³
H'09*⁴
Initialized*¹ Retained Retained Retained
Initialized*¹ Retained Retained Retained
Initialized Initialized Retained Retained
Initialized Initialized*² Retained Retained
RTC control register 3 RCR3
H'00
Initialized Retained Retained Retained
Year alarm register RYRAR
Undefined Retained Retained Retained Retained
Notes: 1. The ENB bit in each register is initialized.
2. Bits other than the RTCEN bit and START bit are initialized.
3. The value of the CF bit, CRF bit and AF bit is undefined.
4. The value of the PEF bit is undefined.
Rev. 1.00 Oct. 01, 2007 Page 763 of 1956
REJ09B0256-0100