DS1390 Datasheet, PDF (20/24 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
WRITE
DIN
READ
DOUT
ADDRESS
BYTE
ADDRESS
BYTE
HIGH-IMPEDANCE
DATA BYTE 0
DATA BYTE 1
DATA
BYTE 0
DATA
BYTE 1
Figure 13. SPI Multiple-Byte Burst Transfer
DATA BYTE N
DATA
BYTE N
CE
SCLK
I/O
A0 A1 A2 A3 A4 A5 A6 W/R D0 D1 D2 D3 D4 D5 D6 D7
Figure 14. 3-Wire Single-Byte Read
CE
SCLK
I/O
A0 A1 A2 A3 A4 A5 A6 W/R D0 D1 D2 D3 D4 D5 D6 D7
Figure 15. 3-Wire Single-Byte Write
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