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DS13105 Rev 4 125/135
STM32WLE5J8/JB/JC Electrical characteristics
127
Figure 23. SPI timing diagram - Slave mode and CPHA = 0
t
v(SO)
Data output valid time
Slave mode, 2.7 < V
DD
< 3.6 V
Range 1
- 10 13.5
ns
Slave mode, 2.7 < V
DD
< 3.6 V
Range 2
-1718
Slave mode, 1.8 < V
DD
< 3.6 V
Range 1
-1020
Slave mode, 1.8 < V
DD
< 3.6 V
Range 2
-1724
t
v(MO)
Master mode (after enable edge) - 1 1.5
t
h(SO)
Data output hold time
Slave mode (after enable edge) 8 - -
t
h(MO)
Master mode (after enable edge) 0 - -
1. Guaranteed by characterization results.
2. Maximum frequency in Slave transmitter mode is determined by the sum of t
v(SO)
and t
su(MI)
, that has to fit into SCK low or
high phase preceding the SCK sampling edge. This value can be achieved when the SPI communicates with a master
having t
su(MI)
= 0 while Duty(SCK) = 50 %.
Table 87. SPI characteristics
(1)
(continued)
Symbol Parameter Conditions Min Typ Max Unit