Datasheet

Figure 12. SPI Multiple-Byte Burst Transfer
Figure 13. 3-Wire Single-Byte Read
Figure 14. 3-Wire Single-Byte Write
CS
SCLK
DIN
DOUT
HIGH-IMPEDANCE
ADDRESS
BYTE
ADDRESS
BYTE
DATA BYTE 0 DATA BYTE 1
DIN
DATA BYTE N
DATA
BYTE 0
DATA
BYTE 1
DATA
BYTE N
WRITE
READ
A1 A2 A3 A4 A5 A6
CE
SCLK
I/O
W/R
A0
D1 D2 D3 D4 D5 D6
D7D0
A1 A2 A3 A4 A5 A6
CE
SCLK
I/O
W/R
A0
D1 D2 D3 D4 D5 D6
D7D0
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Maxim Integrated
23
DS1390–DS1394 Low-Voltage SPI/3-Wire RTCs
with Trickle Charger