STMicroelectronics STM32F042F4 Manual page 46

Electrical characteristics
Symbol
ΣI Total current into sum of all VDD power lines (source)
VDD
ΣI Total current out of sum of all VSS ground lines (sink)
VSS
I Maximum current into each VDD power pin (source)
VDD(PIN)
I Maximum current out of each VSS ground pin (sink)
VSS(PIN)
Output current sunk by any I/O and control pin
I
IO(PIN)
Output current source by any I/O and control pin
Total output current sunk by sum of all I/Os and control pins
ΣI
Total output current sourced by sum of all I/Os and control pins
IO(PIN)
Total output current sourced by sum of all I/Os supplied by VDDIO2
Injected current on FT and FTf pins
(3)
I Injected current on TC and RST pin
INJ(PIN)
Injected current on TTa pins
ΣI Total injected current (sum of all I/O and control pins)
INJ(PIN)
1. All main power (VDD, VDDA) and ground (VSS, VSSA) pins must always be connected to the external power supply, in the
permitted range.
2. This current consumption must be correctly distributed over all I/Os and control pins. The total output current must not be
sunk/sourced between two consecutive power supply pins referring to high pin count QFP packages.
3. A positive injection is induced by V
exceeded. Refer to
Table 18: Voltage characteristics
4. Positive injection is not possible on these I/Os and does not occur for input voltages lower than the specified maximum
value.
5. On these I/Os, a positive injection is induced by V
(2)
device. See note below
6. When several inputs are submitted to a current injection, the maximum
negative injected currents (instantaneous values).
Symbol
T
STG
T
J
46/117
Table 19. Current characteristics
> V while a negative injection is induced by V
IN DDIOx
IN
Table 56: ADC accuracy.
Table 20. Thermal characteristics
Ratings
Storage temperature range
Maximum junction temperature
DocID025832 Rev 5
Ratings
(5)
for the maximum allowed input voltage values.
> V . Negative injection disturbs the analog performance of the
DDA
Σ
I
INJ(PIN)
STM32F042x4 STM32F042x6
Max.
(1)
120
(1)
-120
(1)
100
(1)
-100
25
-25
(2)
80
(2)
-80
-40
-5/+0
± 5
± 5
(6)
± 25
< V . I
IN SS INJ(PIN)
is the absolute sum of the positive and
Value
–65 to +150
150
Unit
mA
(4)
must never be
Unit
°C
°C