Rainbow-electronics DS1393 Manuel d'utilisateur télécharger pdf (Page 20)

DS1390/DS1391/DS1392/DS1393

Low-Voltage SPI/3-Wire RTCs with

Trickle Charger

20 ____________________________________________________________________

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

Figure 13. SPI Multiple-Byte Burst Transfer

A1 A2 A3 A4 A5 A6

SCLK

I/O

W/R

D1 D2 D3 D4 D5 D6

D7D0

Figure 14. 3-Wire Single-Byte Read

A1 A2 A3 A4 A5 A6

SCLK

I/O

W/R

D1 D2 D3 D4 D5 D6

D7D0

Figure 15. 3-Wire Single-Byte Write

1 2 ... 15 16 17 18 19 20 21 22 23 24

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Rainbow-electronics DS1393 Manuel d'utilisateur Page 20