Rainbow-electronics DS1393 Manuel d'utilisateur télécharger pdf (Page 4)

DS1390/DS1391/DS1392/DS1393

Low-Voltage SPI/3-Wire RTCs with

Trickle Charger

4 _____________________________________________________________________

SCLK

DIN

W/R

CDD

CDZ

CDH

WRITE ADDRESS BYTE

NOTE: SCLK CAN BE EITHER POLARITY, SHOWN FOR CPOL = 1.

READ DATA BYTE

DOUT

Figure 1. Timing Diagram—SPI Read Transfer

SCLK

DIN

W/R

CDH

CCH

CWH

WRITE ADDRESS BYTE

WRITE DATA BYTE

D7 D0

Figure 2. Timing Diagram—SPI Write Transfer

1 2 3 4 5 6 7 8 9 ... 23 24

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Rainbow-electronics DS1393 Manuel d'utilisateur Page 4