Datasheet

DocID027590 Rev 4 139/227
STM32F745xx STM32F746xx Electrical characteristics
195
V
IH
FT, TTa and NRST I/O input
high level voltage
(5)
1.7 V≤ V
DD
≤ 3.6 V
0.45V
DD
+0.3
(1)
--
V
0.7V
DD
(2)
BOOT I/O input high level
voltage
1.75 V
≤ V
DD
≤ 3.6 V, –
40 °C≤ T
A
≤ 105 °C
0.17V
DD
+0.7
(1)
--
1.7 V
≤ V
DD
≤ 3.6 V,
0 °C≤ T
A
≤ 105 °C
V
HYS
FT, TTa and NRST I/O input
hysteresis
1.7 V
≤ V
DD
≤ 3.6 V 10%V
DD
(3)
--
V
BOOT I/O input hysteresis
1.75 V
≤ V
DD
≤ 3.6 V, –
40 °C≤ T
A
≤ 105 °C
0.1 - -
1.7 V
≤ V
DD
≤ 3.6 V,
0 °C≤ T
A
≤ 105 °C
I
lkg
I/O input leakage current
(4)
V
SS
≤ V
IN
≤ V
DD
--±1
µA
I/O FT input leakage current
(5)
V
IN
= 5 V - - 3
R
PU
Weak pull-up
equivalent
resistor
(6)
All pins
except for
PA10/PB12
(OTG_FS_ID
,OTG_HS_ID
)
V
IN
= V
SS
30 40 50
kΩ
PA10/PB12
(OTG_FS_ID
,OTG_HS_ID
)
71014
R
PD
Weak pull-
down
equivalent
resistor
(7)
All pins
except for
PA10/PB12
(OTG_FS_ID
,OTG_HS_ID
)
V
IN
= V
DD
30 40 50
PA10/PB12
(OTG_FS_ID
,OTG_HS_ID
)
71014
C
IO
(8)
I/O pin capacitance - - 5 - pF
1. Guaranteed by design.
2. Tested in production.
3. With a minimum of 200 mV.
4. Leakage could be higher than the maximum value, if negative current is injected on adjacent pins, Refer to Table 55: I/O
current injection susceptibility
5. To sustain a voltage higher than VDD +0.3 V, the internal pull-up/pull-down resistors must be disabled. Leakage could be
higher than the maximum value, if negative current is injected on adjacent pins.Refer to Table 55: I/O current injection
susceptibility
6. Pull-up resistors are designed with a true resistance in series with a switchable PMOS. This PMOS contribution to the
series resistance is minimum (~10% order).
Table 56. I/O static characteristics (continued)
Symbol Parameter Conditions Min Typ Max Unit
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