Datasheet

Electrical characteristics STM32F446xC/E
132/202 DocID027107 Rev 6
QSPI interface characteristics
Unless otherwise specified, the parameters given in Table 64 for QSPI are derived from
tests performed under the ambient temperature, f
AHB
frequency and V
DD
supply voltage
conditions summarized in
Table 16, with the following configuration:
• Output speed is set to OSPEEDRy[1:0] = 11
• Capacitive load C=20pF
• Measurement points are done at CMOS levels: 0.5VDD
Refer to Section 6.3.17: I/O port characteristics for more details on the input/output alternate
function characteristics.
Table 64. QSPI dynamic characteristics in SDR Mode
(1)
Symbol Parameter Conditions Min Typ Max Unit
f
SCK
1/t
c(SCK)
QSPI clock frequency
Write mode
1.71 V≤V
DD
≤3.6 V
Cload = 15 pF
--90
MHzRead mode
2.7V <VDD< 3.6V
Cload = 15 pF
--90
1.71 V≤V
DD
≤3.6 V - - 48
t
w(CKH)
QSPI clock high and low -
(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 - 2 - -
t
h(IN)
Data input hold time - 4.5 - -
t
v(OUT)
Data output valid time - - 1.5 3
t
h(OUT)
Data output hold time - 0 - -
1. Guaranteed based on test during characterization.
Table 65. QSPI dynamic characteristics in DDR Mode
(1)
Symbol Parameter Conditions Min Typ Max Unit
f
SCK
1/t
c(SCK)
QSPI clock frequency
Write mode
1.71 V≤V
DD
≤3.6 V
Cload = 15 pF
--60
MHz
Read mode
2.7V <VDD< 3.6V
Cload = 15 pF
--
60
1.71 V≤V
DD
≤3.6 V
--
48
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