Rainbow Electronics DS28DG02 - Manual (Page 18)

DS28DG02: 2kb SPI EEPROM with PIO, RTC, Reset, Battery Monitor, and Watchdog
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Figure 9. SPI Timing, Mode (0,0)
CSZ
SCK
SI
SO
High Impedance High Impedance
Data Valid
t
DS
t
DH
t
CSS
t
CSH
t
CPH
Writing to the device
CSZ
SCK
SO
SI
Data Valid
t
CSH
t
CHZ
t
HO
t
V
t
CLH
Reading from the device
t
CLL
Figure 10. SPI Timing, Mode (1,1)
CSZ
SCK
SI
SO
High Impedance High Impedance
t
CSS
t
CSH
t
CPH
Data Valid
t
DS
t
DH
Writing to the device
t
CSH
CSZ
SCK
SO
SI
t
CHZ
t
HO
t
CLL
t
CLH
Data Valid
t
V
Reading from the device
Legend : t
CLH
= 0.5 * (1/f
CLK
- t
SCKR
-t
SCKF
) t
CLL
= 0.5 * (1/f
CLK
- t
SCKR
-t
SCKF
) t
HO
= t
VMIN