Datasheet

DocID030538 Rev 3 129/226
STM32H743xI Electrical characteristics
196
Figure 20. 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).
MSv46121V1
0
0.5
1
1.5
2
2.5
3
1.6 1.8 2 2.2 2.4 2.6
2.8
3 3.2 3.4 3.6
Voltage
TLL requirement: V
IHmin
= 2 V
TLL requirement: V
ILmin
= 0.8 V
Tested in production, CMOS requirement: V
IHmin
=0.7V
DD
Tested in production, CMOS requirement: V
ILmax
=0.3V
DD
Based on simulation V
IHmin
=0.47V
DD
+0.25
Based on simulation V
ILmax
=0.4V
DD
+0.1
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