rs5c338a RICOH Co.,Ltd., rs5c338a Datasheet - Page 16

• Manufacturer Part Number: rs5c338a
• Description: 3-wire Serial Interface Real-time Clock Ics With Voltage Monitoring Function
• Manufacturer: RICOH Co.,Ltd.

16
R
2.3 Time Counters (at Addresses 0h to 2h)
· Time digit display (BCD format) as follows:
· Any writing to the second counter resets divider units of less than 1 second.
· Any carry from lower digits with the writing of non-existent time may cause the time counters to malfunction.
2.3-1 Second Counter (at Address 0h)
2.3-2 Minute Counter (at Address 1h)
2.3-3 Hour Counter (at Address 2h)
Therefore, such incorrect writing should be replaced with the writing of existent time data.
×
*
) Default settings: Default value means read/written values when the XSTP bit is set to “1” due to power-on from 0 volts or supply voltage drop.
5C338A
D7
D7
D7
—
—
—
The second digits range from 00 to 59 and are carried to the minute digit in transition from 59 to 00.
The minute digits range from 00 to 59 and are carried to the hour digits in transition from 59 to 00.
The hour digits range as shown in “2.1-2 12/24: 12-/24-hour Mode Selection Bit” and are carried to the day-of-
month and day-of-week digits in transition from PM11 to AM12 or from 23 to 00.
0
0
0
0
0
0
Indefinite
Indefinite
M
M
D6
D6
D6
S
S
—
0
0
40
40
40
40
P/A or H
P/A or H
Indefinite
Indefinite
Indefinite
M
M
D5
D5
D5
S
S
20
20
20
20
20
20
Indefinite
Indefinite
Indefinite
M
M
D4
D4
D4
H
H
S
S
10
10
10
10
10
10
Indefinite
Indefinite
Indefinite
D3
D3
D3
M
M
H
H
S
S
8
8
8
8
8
8
Indefinite
Indefinite
Indefinite
D2
D2
D2
M
M
H
H
S
S
4
4
4
4
4
4
Indefinite
Indefinite
Indefinite
D1
D1
D1
M
M
H
H
S
S
2
2
2
2
2
2
Indefinite
Indefinite
Indefinite
D0
D0
M
M
D0
H
H
S
S
1
1
1
1
1
1
(For writing)
(For reading)
Default settings*
(For writing)
(For reading)
Default settings*
(For writing)
(For reading)
Default settings*