Datasheet

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STM32F427xx STM32F429xx Electrical characteristics
198
6.3.17 I/O port characteristics
General input/output characteristics
Unless otherwise specified, the parameters given in Table 56: I/O static characteristics are
derived from tests performed under the conditions summarized in Table 17. All I/Os are
CMOS and TTL compliant.
Table 56. I/O static characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
IL
FT, TTa and NRST I/O input
low level voltage
1.7 V
≤V
DD
≤ 3.6 V - -
0.35V
DD
− 0.04
(1)
V
0.3V
DD
(2)
BOOT0 I/O input low level
voltage
1.75 V
≤V
DD
≤ 3.6 V, –
40 °C≤T
A
≤ 105 °C
--
0.1V
DD
+0.1
(1)
1.7 V≤V
DD
≤ 3.6 V,
0°C
≤T
A
≤ 105 °C
--
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)
BOOT0 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
BOOT0 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
= 5V - - 3
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