Datasheet

Section 17 Timer RE
Page 622 of 982 REJ09B0465-0300 Rev. 3.00
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
17.3.4 Operation in Realtime Clock Mode
Figure 17.5 shows an example of realtime clock mode operation.
SECF in
TREIFR
03
MNF in
TREIFR
WK[2:0]
in TREWK
"1"
"0"
"1"
"0"
"1"
"0"
PM in TRECR1
HR11 to HR00
in TREHR
(Not change)
(Not change)
(Not change)
Set to 0 by accepting an interrupt
request or by a program.
04
MN12 to MN00
in TREMIN
58 59 00
BSY bit
Approx.
62.5ms
Approx.
62.5ms
SC12 to SC00
in TRESEC
1s
BSY: Bit in TRESEC, TREMIN, TREHR, and TREWK
Figure 17.5 Example of Realtime Clock Mode Operation