Electrical characteristics
STM32F051x4 STM32F051x6 STM32F051x8
Table 47. I/O current injection susceptibility
Symbol
Description
Functional
susceptibility
Unit
Negative Positive
injection injection
Injected current on BOOT0
–0
NA
Injected current on PA10, PA12, PB4, PB5, PB10, PB15 and
PD2 pins with induced leakage current on adjacent pins less
–5
IINJ
than –10 µA
Injected current on all other FT and FTf pins
–5
NA
mA
NA
Injected current on PA6 and PC0
–0
+5
Injected current on all other TTa, TC and RST pins
–5
+5
6.3.14
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 20: General operating conditions. All
I/Os are designed as CMOS- and TTL-compliant (except BOOT0).
Symbol
Parameter
VIL
Low level input
voltage
VIH
High level input
voltage
Vhys
Schmitt trigger
hysteresis
Table 48. I/O static characteristics
Conditions
TC and TTa I/O
FT and FTf I/O
BOOT0
All I/Os except
BOOT0 pin
TC and TTa I/O
FT and FTf I/O
BOOT0
All I/Os except
BOOT0 pin
TC and TTa I/O
FT and FTf I/O
BOOT0
Min
Typ
Max
Unit
-
-
0.3 VDDIOx+0.07(1)
-
-
0.475 VDDIOx–0.2(1)
-
-
0.3 VDDIOx–0.3(1)
V
-
-
0.445 VDDIOx+0.398(1) -
0.5 VDDIOx+0.2(1)
-
0.2 VDDIOx+0.95(1)
-
0.3 VDDIOx
-
-
-
V
0.7 VDDIOx
-
-
-
200(1)
-
-
100(1)
-
mV
-
300(1)
-
70/122
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