r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 826

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

Section 22 Realtime Clock (RTC)
22.1.1
Figure 22.1 shows a block diagram of the RTC.
Rev. 1.00 Oct. 01, 2007 Page 760 of 1956
REJ09B0256-0100
RTC clock output
RSECCNT
RSECAR
R64CNT
Prescaler
Block Diagram
16.384 kHz
128 kHz
RMINCNT
RMINAR
32.768 kHz
Counter unit
Figure 22.1 Block Diagram of RTC
RHRCNT
RHRAR
RTC crystal
oscillator
Bus interface
RDAYCNT
RDAYAR
To registers
Internal peripheral module bus
control unit
ATI
Interr upt
PRI
RWKCNT
RWKAR
CUI
RTC operation
RMONCNT
control unit
RMONAR
Reset
RCR3
RYRCNT
RCR1
RCR2
RYRAR