Datasheet

DS10668 Rev 6 51/126
STM32L031x4/6 Electrical characteristics
96
Table 18. Current characteristics
Symbol Ratings Max. Unit
ΣI
VDD
(2)
Total current into sum of all V
DD
power lines (source)
(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.
105
mA
ΣI
VSS
(2)
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
LQFP packages.
Total current out of sum of all V
SS
ground lines (sink)
(1)
105
I
VDD(PIN)
Maximum current into each V
DD
power pin (source)
(1)
100
I
VSS(PIN)
Maximum current out of each V
SS
ground pin (sink)
(1)
100
I
IO
Output current sunk by any I/O and control pin except FTf
pins
16
Output current sunk by FTf pins 22
Output current sourced by any I/O and control pin –16
ΣI
IO(PIN)
(3)
3. These values apply only to STM32L031GxUxS part number.
Total output current sunk by sum of all IOs and control
pins
(4)
4. This current consumption must be correctly distributed over all I/Os and control pins. In particular, it must
be located the closest possible to the couple of supply and ground, and distributed on both sides.
45
Total output current sourced by sum of all IOs and control
pins
(4)
-45
ΣI
IO(PIN)
(5)
5. These values apply to all part numbers except for STM32L031GxUxS.
Total output current sunk by sum of all IOs and control
pins
(2)
90
Total output current sourced by sum of all IOs and control
pins
(2)
-90
I
INJ(PIN)
Injected current on FT, FFf, RST and B pins –5/+0
(6)
6. Positive current injection is not possible on these I/Os. A negative injection is induced by V
IN
<V
SS
. I
INJ(PIN)
must never be exceeded. Refer to Ta ble 17 for maximum allowed input voltage values.
Injected current on TC pin ± 5
(7)
7. A positive injection is induced by V
IN
> V
DD
while a negative injection is induced by V
IN
< V
SS
. I
INJ(PIN)
must never be exceeded. Refer to Table 17: Voltage characteristics for the maximum allowed input voltage
values.
ΣI
INJ(PIN)
Total injected current (sum of all I/O and control pins)
(8)
8. When several inputs are submitted to a current injection, the maximum ΣI
INJ(PIN)
is the absolute sum of the
positive and negative injected currents (instantaneous values).
± 25
Table 19. Thermal characteristics
Symbol Ratings Value Unit
T
STG
Storage temperature range –65 to +150 °C
T
J
Maximum junction temperature 150 °C
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