Datasheet
Electrical characteristics STM32L431xx
80/200 DocID028800 Rev 1
6.1.7 Current consumption measurement
Figure 18. Current consumption measurement scheme
6.2 Absolute maximum ratings
Stresses above the absolute maximum ratings listed in Table 18: Voltage characteristics,
Table 19: Current characteristics and Table 20: Thermal characteristics may cause
permanent damage to the device. These are stress ratings only and functional operation of
the device at these conditions is not implied. Exposure to maximum rating conditions for
extended periods may affect device reliability.
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Table 18. Voltage characteristics
(1)
Symbol Ratings Min Max Unit
V
DDX
- V
SS
External main supply voltage (including
V
DD
, V
DDA
, V
BAT
)
-0.3 4.0 V
V
IN
(2)
Input voltage on FT_xxx pins
V
SS
-0.3 min (V
DD
, V
DDA
) +
4.0
(3)(4)
VInput voltage on TT_xx pins V
SS
-0.3 4.0
Input voltage on any other pins V
SS
-0.3 4.0
|V
DDx
|
Variations between different V
DDX
power
pins of the same domain
-50mV
|V
SSx
-V
SS
|
Variations between all the different ground
pins
(5)
-50mV
1. All main power (V
DD
, V
DDA
, V
BAT
) and ground (V
SS
, V
SSA
) pins must always be connected to the external power supply, in
the permitted range.
2. V
IN
maximum must always be respected. Refer to Table 19: Current characteristics for the maximum allowed injected
current values.
3. This formula has to be applied only on the power supplies related to the IO structure described in the pin definition table.
4. To sustain a voltage higher than 4 V the internal pull-up/pull-down resistors must be disabled.
5. Include VREF- pin.
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