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STM32L151xC STM32L152xC
Electrical characteristics
110
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 the non-standard V
OL
/V
OH
specifications given in
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
:
•
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(
Σ
)
(see
).
•
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(
Σ
)
).
Output voltage levels
Unless otherwise specified, the parameters given in
are derived from tests
performed under the conditions summarized in
. All I/Os are CMOS and TTL
compliant.
Table 44. Output voltage characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
V
OL
(1)(2)
1. The I
IO
current sunk by the device must always respect the absolute maximum rating specified in
and the sum of I
IO
(I/O ports and control pins) must not exceed I
VSS
.
2. Guaranteed by test in production.
Output low level voltage for an I/O pin
I
IO
= 8 mA
2.7 V < V
DD
< 3.6 V
-
0.4
V
V
(2)(3)
3. The I
IO
current sourced by the device must always respect the absolute maximum rating specified in
and the sum of I
IO
(I/O ports and control pins) must not exceed I
VDD
.
Output high level voltage for an I/O pin
V
DD
-0.4
-
V
OL
Output low level voltage for an I/O pin
I
IO
= 4 mA
1.65 V < V
DD
< 3.6 V
-
0.45
V
OH
Output high level voltage for an I/O pin
V
DD
-0.45
-
V
OL
4. Guaranteed by characterization results, not tested in production.
Output low level voltage for an I/O pin
I
IO
= 20 mA
2.7 V < V
DD
< 3.6 V
-
1.3
V
Output high level voltage for an I/O pin
V
DD
-1.3
-