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RV5C387A-E2 Datasheet(PDF) 9 Page - RICOH electronics devices division

Part No. RV5C387A-E2
Description  I2C-bus Real-Time Clock ICs with Voltage Monitoring Function?
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Manufacturer  RICOH [RICOH electronics devices division]
Direct Link  http://www.ricoh.com
Logo RICOH - RICOH electronics devices division

RV5C387A-E2 Datasheet(HTML) 9 Page - RICOH electronics devices division

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PRELIMINARY
RV5C387A
12345
- 9 -
13.
FUNCTION DESCRIPTIONS
13.1.
Address Mapping
Address
Register Name
D a t a
A3A2A1A0
D7
D6
D5
D4
D3
D2
D1
D0
0
0 0 0 0
Second Counter
-
*2)
S40
S20
S10
S8
S4
S2
S1
1
0 0 0 1
Minute Counter
-
M40
M20
M10
M8
M4
M2
M1
2
0 0 1 0
Hour Counter
-
-
H20
P
⋅/A
H10
H8
H4
H2
H1
3
0 0 1 1
Day-of-week Counter
-
-
-
-
-
W4
W2
W1
4
0 1 0 0
Day-of-month Counter
-
-
D20
D10
D8
D4
D2
D1
5
0 1 0 1
Month Counter and
Century Bit
/19
⋅20
-
-
MO10
MO8
MO4
MO2
MO1
6
0 1 1 0
Year Counter
Y80
Y40
Y20
Y10
Y8
Y4
Y2
Y1
7
0 1 1 1
Oscillation Adjustment
Register *3)
-
F6
F5
F4
F3
F2
F1
F0
8
1 0 0 0
Alarm_W
(Minute Register)
-
WM40 WM20
WM10
WM8
WM4
WM2
WM1
9
1 0 0 1
Alarm_W
(Hour Register)
-
-
WH20
WP
⋅/A
WH10
WH8
WH4
WH2
WH1
A
1 0 1 0
Alarm_W
(Day-of-week Register)
-
WW6
WW5
WW4
WW3
WW2
WW1
WW0
B
1 0 1 1
Alarm_D
(Minute Register)
-
DM40
DM20
DM10
DM8
DM4
DM2
DM1
C
1 1 0 0
Alarm_D
(Hour Register)
-
-
DH20
DP
⋅/A
DH10
DH8
DH4
DH2
DH1
D
1 1 0 1
-
-
-
-
-
-
-
-
E
1 1 1 0
Control Register 1 *3)
WALE DALE
/12
⋅24 /CLEN2 TEST
CT2
CT1
CT0
F
1 1 1 1
Control Register 2 *3)
VDSL VDET
SCRA-
TCH
XSTP
/CLEN1 CTFG WAFG DAFG
Notes:
* 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, Control Register 1 and Control Register 2 excluding the XSTP bit.


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