Electrical characteristics
STM32L151x6/8/B, STM32L152x6/8/B
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DocID17659 Rev 10
Functional susceptibility to I/O current injection
While a simple application is executed on the device, the device is stressed by injecting
current into the I/O pins programmed in floating input mode. While current is injected into
the I/O pin, one at a time, the device is checked for functional failures.
The failure is indicated by an out of range parameter: ADC error, out of spec current
injection on adjacent pins or other functional failure (for example reset, oscillator frequency
deviation, LCD levels, etc.).
The test results are given in
.
Note:
It is recommended to add a Schottky diode (pin to ground) to analog pins which may
potentially inject negative currents.
Table 41. I/O current injection susceptibility
Symbol
Description
Functional susceptibility
Unit
Negative
injection
Positive
injection
I
INJ
Injected current on all 5 V tolerant (FT) pins
-5
+0
mA
Injected current on any other pin
-5
+5