HD64F3687HV Datasheet, PDF (176/538 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

Section 10 Realtime Clock (RTC)
32-kHz
oscillator
circuit
PSS
1/4
TMOW
Clock count
control circuit
RTCCSR
RSECDR
RMINDR
RHRDR
RWKDR
RTCCR1
RTCCR2
Interrupt
control circuit
[Legend]
RTCCSR:
RSECDR:
RMINDR:
RHRDR:
RWKDR:
RTCCR1:
RTCCR2:
PSS:
Clock source select register
Second date register/free running counter data register
Minute date register
Hour date register
Day-of-week date register
RTC control register 1
RTC control register 2
Prescaler S
Interrupt
Figure 10.1 Block Diagram of RTC
10.2 Input/Output Pin
Table 10.1 shows the RTC input/output pin.
Table 10.1 Pin Configuration
Name
Clock output
Abbreviation I/O
TMOW
Output
Function
RTC divided clock output
Rev.5.00 Nov. 02, 2005 Page 142 of 500
REJ09B0027-0500