11.1.2 Block Diagram
Figure 11.1 shows a block diagram of the RTC.
ATI
PRI
CUI
RTCCLK
RESET, STBY, etc
16.384 kHz
RTC crystal
oscillator
RTC operation
control unit
32.768 kHz
Prescaler
128 Hz
RCR1
RCR2
Counter unit
*
RCR3
Interrupt
R64CNT
control unit
RSECCNT
RSECAR
RMINCNT
RHRCNT
RDAYCNT
RDAYAR
RWKCNT
RMONCNT
RMONAR
RYRCNT
*
RYRAR
RMINAR
RHRAR
RWKAR
To registers
Bus interface
Internal peripheral module bus
Note:
* SH7750R only
Figure 11.1 Block Diagram of RTC
Rev. 6.0, 07/02, page 268 of 986