Datasheet

Electrical characteristics STM32H743xI
132/231 DS12110 Rev 5
Figure 21. V
IL
/V
IH
for all I/Os except BOOT0
Output driving current
The GPIOs (general purpose input/outputs) can sink or source up to ±8 mA, and sink or
source up to
±20 mA (with a relaxed V
OL
/V
OH
).
In the user application, the number of I/O pins whic
h can drive current must be limited to
respect the absolute maximum rating specified in Section 6.2. In particular:
 The sum of the currents sourced by all the I/Os on V
DD,
plus the maximum Run
consumption of the MCU sourced on V
DD,
cannot exceed the absolute maximum rating
I
VDD
(see Table 21).
 The sum of the currents sunk by all the I/Os on V
SS
plus the maximum Run
consumption of the MCU sunk on V
SS
cannot exceed the absolute maximum rating
I
VSS
(see Table 21).
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