Datasheet

Electrical characteristics STM32F334x4 STM32F334x6 STM32F334x8
74/121 DocID025409 Rev 8
The failure is indicated by an out of range parameter: ADC error above a certain limit (higher
than 5 LSB TUE), out of conventional limits of induced leakage current on adjacent pins (out
of –5 µA/+0 µA range), or other functional failure (for example reset occurrence or oscillator
frequency deviation). The test results are given in
Table 49: I/O current injection
susceptibility.
Note: It is recommended to add a Schottky diode (pin to ground) to the analog pins that may
potentially inject negative currents.
6.3.14 I/O port characteristics
General input/output characteristics
Unless otherwise specified, the parameters given in Table 50 are derived from tests
performed under the conditions summarized in Table 19. All I/Os are CMOS and TTL
compliant.
Table 49. I/O current injection susceptibility
Symbol Description
Functional susceptibility
Unit
Negative
injection
Positive
injection
I
INJ
Injected current on BOOT0 – 0
NA (Injection is not
possible)
mA
Injected current on PC0, PC1, PC2, PC3 (TTa pins) and PF1
pin (FT pin)
-0 +5
Injected current on PA0, PA1, PA2, PA3, PA4, PA5, PA6,
PA7, PC4, PC5, PB0, PB1, PB2, PB12, PB13, PB14, PB15
with induced leakage current on other pins from this group
less than -100 µA or more than +900 µA
-5 +5
Injected current on PB11, other TT, FT, and FTf pins – 5
Injection is not
possible
Injected current on all other TC, TTa and RESET pins – 5 +5
Table 50. I/O static characteristics
Symbol Parameter Conditions Min. Typ. Max. Unit
V
IL
Low-level input
voltage
TT, TC and TTa I/O - - 0.3 V
DD
+0.07
(1)
V
FT and FTf I/O - - 0.475 V
DD
-0.2
(1)
BOOT0 - - 0.3 V
DD
–0.3
(1)
All I/Os except BOOT0 - - 0.3 V
DD
(2)
V
IH
High-level input
voltage
TTa and TT I/O 0.445 V
DD
+0.398
(1)
--
FT and FTf I/O 0.5 V
DD+0.2
(1)
--
BOOT0 0.2 V
DD
+0.95
(1)
--
All I/Os except BOOT0 0.7 V
DD
(2)
--
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.