STMicroelectronics STM32F042C4, Руководство пользователя

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STM32F042xx Electrical characteristics
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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 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 Section 6.3.12: Electrical
sensitivity characteristics