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STM32F042x4 STM32F042x6
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
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
consumption of the MCU sourced on V
I
Σ
VDD
•
The sum of the currents sunk by all the I/Os on V
the MCU sunk on V
Table 18: Voltage
Output voltage levels
Unless otherwise specified, the parameters given in the table below are derived from tests
performed under the ambient temperature and supply voltage conditions summarized in
Table 21: General operating
TC unless otherwise specified).
Symbol
V
Output low level voltage for an I/O pin
OL
V
Output high level voltage for an I/O pin
OH
V
Output low level voltage for an I/O pin
OL
V
Output high level voltage for an I/O pin
OH
(3)
V
Output low level voltage for an I/O pin
OL
(3)
V
Output high level voltage for an I/O pin
OH
(3)
V
Output low level voltage for an I/O pin
OL
(3)
V
Output high level voltage for an I/O pin
OH
(4)
V
Output low level voltage for an I/O pin
OL
(4)
V
Output high level voltage for an I/O pin
OH
Output low level voltage for an FTf I/O pin in
(3)
V
OLFm+
Fm+ mode
1. The I
current sourced or sunk by the device must always respect the absolute maximum rating specified in
IO
characteristics, and the sum of the currents sourced or sunk by all the I/Os (I/O ports and control pins) must always
Voltage
respect the absolute maximum ratings
2. TTL and CMOS outputs are compatible with JEDEC standards JESD36 and JESD52.
3. Data based on characterization results. Not tested in production.
4. Data based on characterization results. Not tested in production.
(see
Table 18: Voltage
, cannot exceed the absolute maximum rating
SS
characteristics).
conditions. All I/Os are CMOS- and TTL-compliant (FT, TTa or
Table 51. Output voltage characteristics
Parameter
I
Σ
IO .
DocID025832 Rev 5
/V
).
OL
OH
Section
, cannot exceed the absolute maximum rating
DD
characteristics).
SS
Conditions
CMOS port
|I
| = 8 mA
IO
V
≥ 2.7 V
DDIOx
TTL port
|I
| = 8 mA
IO
V
≥ 2.7 V
DDIOx
|I
| = 20 mA
IO
V
≥ 2.7 V
DDIOx
|I
| = 6 mA
IO
V
≥ 2 V
DDIOx
|I
| = 4 mA
IO
|I
| = 20 mA
IO
V
≥ 2.7 V
DDIOx
|I
| = 10 mA
IO
Electrical characteristics
6.2:
, plus the maximum
DDIOx
, plus the maximum consumption of
I
Σ
VSS
(1)
Min
(2)
-
V
–0.4
DDIOx
(2)
-
2.4
-
V
–1.3
DDIOx
-
V
–0.4
DDIOx
-
V
–0.4
DDIOx
-
-
(see
Max
Unit
0.4
V
-
0.4
V
-
1.3
V
-
0.4
V
-
0.4
V
-
V
0.4
V
0.4
V
Table 18:
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