Datasheet

Table Of Contents
Electrical characteristics STM32WLE5J8/JB/JC
124/135 DS13105 Rev 4
SPI characteristics
Unless otherwise specified, the parameters given in the table below are derived from tests
performed under the ambient temperature, f
PCLKx
frequency and supply voltage conditions
summarized in Table 25: General operating conditions, with the following configuration:
output speed set to OSPEEDRy[1:0] = 11
capacitive load C = 30 pF
measurements done at CMOS levels: 0.5 x V
DD
Refer to Section 5.3.16: I/O port characteristics for more details on the input/output alternate
function characteristics (NSS, SCK, MOSI, MISO for SPI).
Table 87. SPI characteristics
(1)
Symbol Parameter Conditions Min Typ Max Unit
f
SCK
1/t
c(SCK)
SPI clock frequency
Master mode
1.65 < V
DD
< 3.6 V, Range 1
--
24
MHz
Master transmitter mode
1.65 < V
DD
< 3.6 V, Range 1
24
Slave receiver mode
1.65 < V
DD
< 3.6 V, Range 1
24
Slave mode transmitter/full duplex
2.7 < V
DD
< 3.6 V, Range 1
24
(2)
Slave mode transmitter/full duplex
1.65 < V
DD
< 3.6 V, Range 1
24
(2)
t
su(NSS)
NSS setup time Slave mode, SPI prescaler = 2 3 x T
PCLK
--
-
t
h(NSS)
NSS hold time Slave mode, SPI prescaler = 2 2 x T
PCLK
--
t
w(SCKH)
t
w(SCKL)
SCK high and low time Master mode T
PCLK
- 1 T
PCLK
T
PCLK
+ 1
t
su(MI)
Data input setup time
Master mode 1 - -
ns
t
su(SI)
Slave mode 1 - -
t
h(MI)
Data input hold time
Master mode 6 - -
t
h(SI)
Slave mode 2 - -
t
a(SO)
Data output access time
Slave mode
91234
t
dis(SO)
Data output disable time 9 10 16