SH7751 Datasheet, PDF (390/1224 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

11. Realtime Clock (RTC)
11.1.2 Block Diagram
Figure 11.1 shows a block diagram of the RTC.
RTCCLK
16.384 kHz
Prescaler
32.768 kHz
RTC crystal
oscillation circuit
128 Hz
R64CNT
Counter unit
ATI
PRI
CUI
RESET, STBY, etc
RTC operation
control unit
Interrupt
control unit
RCR1
RCR2
*
RCR3
RSECCNT RMINCNT RHRCNT RDAYCNT RWKCNT RMONCNT RYRCNT
RSECAR
RMINAR
RHRAR
RDAYAR
RWKAR
RMONAR
*
RYRAR
To registers
Bus interface
Note: * SH7751R only
Internal peripheral module bus
Figure 11.1 Block Diagram of RTC
Rev.4.00 Oct. 10, 2008 Page 292 of 1122
REJ09B0370-0400