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