Datasheet
Electrical characteristics STM32L476xx
212/270 DS10198 Rev 8
Quad SPI characteristics
Unless otherwise specified, the parameters given in Table 97 and Table 98 for Quad SPI
are derived from tests performed under the ambient temperature, f
AHB
frequency and V
DD
supply voltage conditions summarized in Table 23: General operating conditions, with the
following configuration:
• Output speed is set to OSPEEDRy[1:0] = 11
• Capacitive load C = 15 or 20 pF
• Measurement points are done at CMOS levels: 0.5 V
DD
Refer to Section 6.3.14: I/O port characteristics for more details on the input/output alternate
function characteristics.
Table 97. Quad SPI characteristics in SDR mode
(1)
Symbol Parameter Conditions Min Typ Max Unit
F
CK
1/t
(CK)
Quad SPI clock frequency
1.71 < V
DD
< 3.6 V, C
LOAD
= 20 pF
Voltage Range 1
--40
MHz
1.71 < V
DD
< 3.6 V, C
LOAD
= 15 pF
Voltage Range 1
--48
2.7 < V
DD
< 3.6 V, C
LOAD
= 15 pF
Voltage Range 1
--60
1.71 < V
DD
< 3.6 V C
LOAD
= 20 pF
Voltage Range 2
--26
t
w(CKH)
Quad SPI clock high and
low time
f
AHBCLK
= 48 MHz, presc=0
t
(CK)
/2-2 - t
(CK)
/2
ns
t
w(CKL)
t
(CK)
/2 - t
(CK)
/2+2
t
s(IN)
Data input setup time
Voltage Range 1 4 - -
Voltage Range 2 3.5 - -
t
h(IN)
Data input hold time
Voltage Range 1 5.5 - -
Voltage Range 2 6.5 - -
t
v(OUT)
Data output valid time
Voltage Range 1 - 2.5 5
Voltage Range 2 - 3 5
t
h(OUT)
Data output hold time
Voltage Range 1 1.5 - -
Voltage Range 2 2 - -
1. Guaranteed by characterization results.
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