DS1390 Maxim, DS1390 Datasheet - Page 5

• Manufacturer Part Number: DS1390
• Description: The low-voltage serial-peripheral interface (SPI™) DS1390/DS1391/DS1394 and the low-voltage 3-wire DS1392/DS1393 real-time clocks (RTCs) are clocks/calendars that provide hundredths of a second, seconds, minutes, hours, day, date, month, and ye
• Manufacturer: Maxim

Figure 2a. Timing Diagram—SPI Write Transfer (Mode 3)
Figure 2b. Timing Diagram—SPI Write Transfer (Mode 0)
CPHA = 1
CPHA = 0
SCLK
DOUT
SCLK
DOUT
NOTE: SCLK CAN BE EITHER POLARITY SHOWN FOR CPOL = 1.
DIN
DIN
NOTE: SCLK CAN BE EITHER POLARITY SHOWN FOR CPOL = 0.
CS
CS
t
DC
t
CC
t
CC
t
DC
W/R
W/R
t
CDH
t
CDH
t
t
CL
R
t
R
t
CL
Low-Voltage SPI/3-Wire RTCs with
WRITE ADDRESS BYTE
WRITE ADDRESS BYTE
_____________________________________________________________________
A6
A6
t
t
CH
CH
t
t
F
F
HIGH IMPEDANCE
HIGH IMPEDANCE
A0
A0
Trickle Charger
D7
D7
READ DATA BYTE
READ DATA BYTE
t
CCH
D0
D0
t
CWH
t
CWH
t
CCH
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