Datasheet

Figure 3. Timing Diagram—3-Wire Read Transfer
Figure 4. Timing Diagram—3-Wire Write Transfer
t
DC
t
CL
t
CH
t
CDH
t
CC
t
CDD
t
CDZ
t
R
t
F
A0 A1 R/W
D0 D7
WRITE ADDRESS BYTE
READ DATA BYTE
CE
SCLK
I/O
I/O
CE
SCLK
t
DC
t
CL
t
CH
t
CDH
t
CC
t
CCH
t
CWH
t
R
t
F
A0 A1 R/W
D0
D7
WRITE ADDRESS BYTE
WRITE DATA BYTE
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Maxim Integrated │ 7
DS1390–DS1394 Low-Voltage SPI/3-Wire RTCs
with Trickle Charger