Datasheet

Electrical characteristics STM32F051x4 STM32F051x6 STM32F051x8
70/121 DocID022265 Rev 6
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).
Table 47. I/O current injection susceptibility
Symbol Description
Functional
susceptibility
Unit
Negative
injection
Positive
injection
I
INJ
Injected current on BOOT0 –0 NA
mA
Injected current on PA10, PA12, PB4, PB5, PB10, PB15 and
PD2 pins with induced leakage current on adjacent pins less
than –10 µA
–5 NA
Injected current on all other FT and FTf pins –5 NA
Injected current on PA6 and PC0 –0 +5
Injected current on all other TTa, TC and RST pins –5 +5
Table 48. I/O static characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
IL
Low level input
voltage
TC and TTa I/O - - 0.3 V
DDIOx
+0.07
(1)
V
FT and FTf I/O - - 0.475 V
DDIOx
–0.2
(1)
BOOT0 - - 0.3 V
DDIOx
–0.3
(1)
All I/Os except
BOOT0 pin
--0.3 V
DDIOx
V
IH
High level input
voltage
TC and TTa I/O 0.445 V
DDIOx
+0.398
(1)
--
V
FT and FTf I/O 0.5 V
DDIOx
+0.2
(1)
--
BOOT0 0.2 V
DDIOx
+0.95
(1)
--
All I/Os except
BOOT0 pin
0.7 V
DDIOx
--
V
hys
Schmitt trigger
hysteresis
TC and TTa I/O - 200
(1)
-
mVFT and FTf I/O - 100
(1)
-
BOOT0 - 300
(1)
-
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