Electrical characteristics
STM32F103xx
Figure 15. Unused I/O pin connection
V
DD
STM32F103xx
10 kΩ
UNUSED I/O PORT
STM32F103xx
UNUSED I/O PORT
10 kΩ
ai14147b
Output driving current
The GPIOs (general purpose input/outputs) can sink or source up to +/-8 mA, and sink
+20 mA (with a relaxed V ).
OL
In the user application, the number of I/O pins which can drive current must be limited to
respect the absolute maximum rating specified in Section 5.2:
■
The sum of the currents sourced by all the I/Os on V
plus the maximum Run
DD,
consumption of the MCU sourced on V
cannot exceed the absolute maximum rating
DD,
I
(see Table 5).
VDD
■
The sum of the currents sunk by all the I/Os on V plus the maximum Run
SS
consumption of the MCU sunk on V cannot exceed the absolute maximum rating
SS
I
(see Table 5).
VSS
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STMICROELECTRONICS [ ST ]
