Datasheet

Electrical characteristics STM32F303x6/x8
48/121 DocID025083 Rev 7
6.2 Absolute maximum ratings
Stresses above the absolute maximum ratings listed in Table 17: Voltage characteristics,
Table 18: Current characteristics, and Table 19: 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 the device reliability.
Table 17. Voltage characteristics
(1)
Symbol Ratings Min. Max. Unit
V
DD
–V
SS
External main supply voltage (including V
DDA,
V
BAT
and V
DD
)
-0.3
V
V
DD
–V
DDA
Allowed voltage difference for V
DD
> V
DDA
-0.4
V
IN
(2)
Input voltage on FT and FTf pins V
SS
− 0.3 V
DD
+ 4.0
Input voltage on TTa V
SS
− 0.3 4.0
Input voltage on any other pin V
SS
− 0.3 4.0
Input voltage on Boot0 pin 0 9
|ΔV
DDx
| Variations between different V
DD
power pins - 50
mV
|V
SSX
− V
SS
| Variations between all the different ground pins
(3)
-50
V
ESD(HBM)
Electrostatic discharge voltage (human body
model)
see Section 6.3.12: Electrical
sensitivity characteristics
-
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. The following relationship must be respected between V
DDA
and V
DD
:
V
DDA
must power on before or at the same time as V
DD
in the power up sequence.
V
DDA
must be greater than or equal to V
DD.
2. V
IN
maximum must always be respected. Refer to Table 18: Current characteristics for the maximum allowed injected
current values.
3. Include V
REF-
pin.
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