rs5c338a RICOH Co.,Ltd., rs5c338a Datasheet - Page 9

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

FUNCTIONAL DESCRIPTIONS
1. Address Mapping
D
A
B
C
E
0
1
2
3
4
5
6
7
8
9
F
*
*
*
*
1) All the data listed above accept both reading and writing.
2) The data marked with “–” is invalid for writing and reset to 0 for reading.
3) When the XSTP bit is set to 1 in control register 2, all the bits are reset to 0 in oscillation adjustment register 1, control register 1 and control register 2
4) Writing to the oscillation adjustment register requires zero filling the (0) bit.
excluding the XSTP bit.
A
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
3
A
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Address
2
A
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
A
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Second Counter
Minute Counter
Hour Counter
Day-of-week Counter
Day-of-month Counter
Month Counter and Century Bit 19/20
Year Counter
Oscillation Adjustment Register
Alarm_W (minute register)
Alarm_W (hour register)
Alarm_W (day-of-week register)
Alarm_D (minute register)
Alarm_D (hour register)
Control Register 1
Control Register 2
Register
*
*
3
3
*
3
WALE DALE 12/24 CLEN2 TEST
VDSL VDET
(0)
Y
D7
–
–
–
–
–
–
–
–
–
–
–
*
80
*
2
4
WM
DM
WW
M
Y
S
D6
F
–
–
–
–
–
–
–
40
40
40
6
40
40
6
SCRATCH
WP/A
WM
DP/A
WH
DM
WW
DH
P/A
M
H
D
Y
S
D5
F
–
–
–
20
20
20
20
20
5
20
20
20
20
5
WM
MO
WH
DM
XSTP CLEN1 CTFG WAFG DAFG
WW
DH
M
H
D
Y
D4
S
F
–
–
10
10
10
10
10
4
Data*
10
10
10
10
10
4
WM
WW
MO
WH
DM
DH
M
1
H
D
D3
Y
S
F
–
–
8
8
3
8
8
8
8
8
8
8
8
3
WM
WW
MO
WH
DM
DH
CT
M
W
D2
H
D
Y
F
S
–
4
2
4
4
4
4
4
2
4
4
4
4
4
2
R
WM
WW
MO
WH
DM
DH
CT
×
M
W
D1
H
D
Y
F
S
–
2
2
1
2
2
5C338A
2
2
1
2
2
2
2
2
1
WM
WW
MO
WH
DM
DH
CT
M
W
D0
H
D
S
Y
F
–
1
1
0
1
1
1
1
0
1
1
1
1
1
0
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