Datasheet

DocID030538 Rev 3 97/226
STM32H743xI Electrical characteristics
196
Table 21. Current characteristics
Symbols Ratings Max Unit
ΣIV
DD
Total current into sum of all V
DD
power lines (source)
(1)
1. All main power (V
DD
, V
DDA
, V
DD33USB
) and ground (V
SS
, V
SSA
) pins must always be connected to the
external power supplies, in the permitted range.
620
mA
ΣIV
SS
Total current out of sum of all V
SS
ground lines (sink)
(1)
620
IV
DD
Maximum current into each V
DD
power pin (source)
(1)
100
IV
SS
Maximum current out of each V
SS
ground pin (sink)
(1)
100
I
IO
Output current sunk by any I/O and control pin 20
ΣI
(PIN)
Total output current sunk by sum of all I/Os and control pins
(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
QFP packages.
140
Total output current sourced by sum of all I/Os and control pins
(2)
140
I
INJ(PIN)
(3)(4)
3. Positive injection is not possible on these I/Os and does not occur for input voltages lower than the
specified maximum value.
4. 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 also to Table 20: Voltage characteristics for the maximum allowed input voltage
values.
Injected current on FT_xxx, TT_xx, RST and B pins except PA4,
PA5
5/+0
Injected current on PA4, PA5 0/0
ΣI
INJ(PIN)
Total injected current (sum of all I/Os and control pins)
(5)
5. When several inputs are submitted to a current injection, the maximum I
INJ(PIN)
is the absolute sum of the
positive and negative injected currents (instantaneous values).
±25
Table 22. Thermal characteristics
Symbol Ratings Value Unit
T
STG
Storage temperature range − 65 to +150
°C
T
J
Maximum junction temperature 125
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