DS1390_09 Datasheet, PDF (21/26 Pages) Maxim Integrated Products – Low-Voltage SPI/3-Wire RTCs with Trickle Charger

Low-Voltage SPI/3-Wire RTCs with
Trickle Charger
CS
SCLK
(MODE 0)
SCLK
(MODE 1)
DIN
W/R A6
A5
A4
A3
A2
A1
A0
D7
D6
D5 D4
D3
D2
D1 D0
DOUT
Figure 10. SPI Single-Byte Write
HIGH IMPEDANCE
CS
SCLK
(MODE 0)
SCLK
(MODE 1)
DIN
W/R
A6
A5
A4
A3
A2
A1
A0
DOUT
HIGH IMPEDANCE
D7
D6 D5
D4
D3
D2
D1 D0
Figure 11. SPI Single-Byte Read
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