
5
Maxim Integrated
Low-Current SPI/3-Wire RTCs
DS1343/DS1344
SPI Write Timing
SPI Read Timing
CE
tCC
tCL
tCDH
tDC
tCH
tF
tR
tCCH
tCWH
tCDH
D0
D7
A0
A6
WRITE DATA BYTE
WRITE ADDRESS BYTE
*SCLK CAN BE EITHER POLARITY. TIMING SHOWN FOR CPOL = 1.
SERMODE = VCC.
R/W = 1
SCLK*
SDI
CE
tCC
tCL
tCDH
tDC
tCH
tCDD
tCWH
tCDZ
D0
D7
A0
A6
READ DATA BYTE
WRITE ADDRESS BYTE
*SCLK CAN BE EITHER POLARITY. TIMING SHOWN FOR CPOL = 1.
SERMODE = VCC.
SCLK*
SDI
SDO
R/W = 0