DS1347_13 Datasheet, PDF (14/17 Pages) Maxim Integrated Products – Low-Current, SPI-Compatible Real-Time Clock

DS1347
Low-Current, SPI-Compatible
Real-Time Clock
CS
SCLK
DIN
R/W A6 A5 A4 A3 A2 A1 1
ADDRESS/COMMAND BYTE
DOUT
HIGH IMPEDANCE
D7 D6 D5 D4 D3 D2 D1 D0
DATA BYTE
Figure 2a. Single Read
CS
SCLK
DIN _{R/W A6 1}
1
1
1
1
1
ADDRESS/COMMAND BYTE*
DOUT
HIGH IMPEDANCE
D7 D6
*ONLY ONE ADDRESS/COMMAND BYTE IS REQUIRED PER BURST TRANSACTION.
D5 D4 D3 D2
DATA BYTE 1
D1 D0
Figure 2b. Burst Read
D7 D6
D5 D4 D3 D2
DATA BYTE N
D1 D0
CS
t_CSS
t_CH
t_CL
SCLK
t_DH
t_DS
R/W
A6
A5
DIN
DOUT
Figure 3. SPI Bus Timing Diagram
t_CP
1
D7
t_DO
t_CSH
t_CSW
t_CSZ
D0
14
Maxim Integrated