DS1347 Maxim, DS1347 Datasheet - Page 14

• Manufacturer Part Number: DS1347
• Description: The DS1347 SPI-compatible real-time clock (RTC) contains a real-time clock/calendar and 31 x 8 bits of static random-access memory (SRAM)
• Manufacturer: Maxim

Low-Current, SPI-Compatible Real-Time Clock
Figure 2a. Single Read
Figure 2b. Burst Read
Figure 3. SPI Bus Timing Diagram
14
CS
SCLK
DIN
DOUT
CS
SCLK
DIN
DOUT
*ONLY ONE ADDRESS/COMMAND BYTE IS REQUIRED PER BURST TRANSACTION.
t
DS
______________________________________________________________________________________
R/W
t
CSS
A6
R/W
CS
SCLK
DIN
DOUT
ADDRESS/COMMAND BYTE*
1
HIGH IMPEDANCE
R/W
1
t
t
CL
DH
1
A6
A6
1
t
CH
A5
ADDRESS/COMMAND BYTE
HIGH IMPEDANCE
1
A4
1
A5
A3
D7
A2
D6
A1
D5
DATA BYTE 1
1
D4
1
D3
D7
t
CP
t
D2
DO
D6
D1
D5
D0
D7
D4
DATA BYTE
D3
D7
D6
D2
D5
D1
DATA BYTE N
D4
D0
D3
t
CSZ
D2
t
D0
CSH
D1
t
CSW
D0