Datasheet

Electrical characteristics STM32F405xx, STM32F407xx
114/202 DocID022152 Rev 8
5.3.16 I/O port characteristics
General input/output characteristics
Unless otherwise specified, the parameters given in Table 48 are derived from tests
performed under the conditions summarized in Table 14. All I/Os are CMOS and TTL
compliant.
Table 47. I/O current injection susceptibility
Symbol Description
Functional susceptibility
Unit
Negative
injection
Positive
injection
I
INJ
(1)
Injected current on BOOT0 pin − 0 NA
mA
Injected current on NRST pin − 0 NA
Injected current on PE2, PE3, PE4, PE5, PE6,
PI8, PC13, PC14, PC15, PI9, PI10, PI11, PF0,
PF1, PF2, PF3, PF4, PF5, PF10, PH0/OSC_IN,
PH1/OSC_OUT, PC0, PC1, PC2, PC3, PB6,
PB7, PB8, PB9, PE0, PE1, PI4, PI5, PI6, PI7,
PDR_ON, BYPASS_REG
− 0 NA
Injected current on all FT pins − 5NA
Injected current on any other pin − 5+5
1. It is recommended to add a Schottky diode (pin to ground) to analog pins which may potentially inject negative currents.
Table 48. 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
- - 0.3V
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 low
level voltage
1.7 V
≤ V
DD
≤ 3.6 V
0.45V
DD
+0.3
(1)
--
0.7V
DD
(2)
--
BOOT0 I/O input low 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
--
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