Datasheet

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STM32F412xE/G Electrical characteristics
161
Note: It is recommended to add a Schottky diode (pin to ground) to analog pins which may
potentially inject negative currents.
6.3.16 I/O port characteristics
General input/output characteristics
Unless otherwise specified, the parameters given in Table 5 6 are derived from tests
performed under the conditions summarized in Table 15. All I/Os are CMOS and TTL
compliant.
Table 55. I/O current injection susceptibility
(1)
1. NA = not applicable.
Symbol Description
Functional susceptibility
Unit
Negative
injection
Positive
injection
I
INJ
Injected current on BOOT0 pin –0 NA
mA
Injected current on NRST pin –0 NA
Injected current on PB3, PB4, PB5, PB6,
PB7, PB8, PB9, PC13, PC14, PC15, PH1,
PDR_ON, PC0, PC1,PC2, PC3, PD1,
PD5, PD6, PD7, PE0, PE2, PE3, PE4,
PE5, PE6
–0 NA
Injected current on any other FT pin –5 NA
Injected current on any other pins –5 +5
Table 56. I/O static characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
IL
FT, TC and NRST I/O input low
level voltage
1.7 V
≤ V
DD
≤ 3.6 V - - 0.3V
DD
(1)
V
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
(2)
1.7 V≤ V
DD
≤ 3.6 V,
0 °C
≤ T
A
≤ 105 °C
--
V
IH
FT, TC and NRST I/O input high
level voltage
(5)
1.7 V≤ V
DD
≤ 3.6 V 0.7V
DD
(1)
--
V
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
(2)
--
1.7 V
≤ V
DD
≤ 3.6 V,
0 °C
≤ T
A
≤ 105 °C
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