DS1390 Datasheet, PDF (4/24 Pages) Maxim Integrated Products – Low-Voltage SPI/3-Wire RTCs with Trickle Charger

Low-Voltage SPI/3-Wire RTCs with
Trickle Charger
CS
SCLK
DIN
DOUT
t_CC
t_R
t_CL
t_CDH
t_CH
t_DC
W/R
A6
t_F
A0
WRITE ADDRESS BYTE
NOTE: SCLK CAN BE EITHER POLARITY, SHOWN FOR CPOL = 1.
Figure 1. Timing Diagram—SPI Read Transfer
t_CDZ
t_CDD
D7
D0
READ DATA BYTE
CS
SCLK
t_CC
DIN ^tDC
W/R
t_R
t_CL
t_CDH
t_CH
A6
t_F
A0
WRITE ADDRESS BYTE
Figure 2. Timing Diagram—SPI Write Transfer
t_CWH
t_CCH
D7
D0
WRITE DATA BYTE
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