Datasheet

DocID025743 Rev 6 39/106
STM32F031x4 STM32F031x6 Electrical characteristics
80
6.2 Absolute maximum ratings
Stresses above the absolute maximum ratings listed in Table 15: Voltage characteristics,
Tabl e 16: Current characteristics and Table 17: 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.
Table 15. Voltage characteristics
(1)
1. All main power (V
DD
, V
DDA
) and ground (V
SS
, V
SSA
) pins must always be connected to the external power
supply, in the permitted range.
Symbol Ratings Min Max Unit
V
DD
–V
SS
External main supply voltage - 0.3 4.0 V
V
DDA
–V
SS
External analog supply voltage - 0.3 4.0 V
V
DD
–V
DDA
Allowed voltage difference for V
DD
> V
DDA
-0.4V
V
BAT
–V
SS
External backup supply voltage - 0.3 4.0 V
V
IN
(2)
2. V
IN
maximum must always be respected. Refer to Table 16: Current characteristics for the maximum
allowed injected current values.
Input voltage on FT and FTf pins V
SS
- 0.3 V
DDIOx
+ 4.0
(3)
3. Valid only if the internal pull-up/pull-down resistors are disabled. If internal pull-up or pull-down resistor is
enabled, the maximum limit is 4 V.
V
Input voltage on TTa pins V
SS
- 0.3 4.0 V
BOOT0 0 9.0 V
Input voltage on any other pin V
SS
- 0.3 4.0 V
|∆V
DDx
| Variations between different V
DD
power pins - 50 mV
|V
SSx
- V
SS
|
Variations between all the different ground
pins
-50mV
V
ESD(HBM)
Electrostatic discharge voltage
(human body model)
see Section 6.3.12: Electrical
sensitivity characteristics
-
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