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STM32F042x4 STM32F042x6
Electrical characteristics
89
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.
Table 18. 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
DDIO2
–V
SS
External I/O 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
-
0.4
V
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 19: 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
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
-
50
mV
V
ESD(HBM)
Electrostatic discharge voltage
(human body model)
see
-
