Datasheet

DocID027973 Rev 5 75/119
STM32L011x3/4 Electrical characteristics
93
6.3.13 I/O port characteristics
General input/output characteristics
Unless otherwise specified, the parameters given in Table 50 are derived from tests
performed under the conditions summarized in Table 18. All I/Os are CMOS and TTL
compliant.
Table 50. I/O static characteristics
Symbol Parameter Conditions Min Typ
Max Unit
V
IL
Input low level voltage
TC, FT, FTf, RST
I/Os
- - 0.3V
DD
V
BOOT0 pin - - 0.14V
DD
(1)
V
IH
Input high level voltage
All I/Os except
BOOT0 pin
0.7 V
DD
--
BOOT0 pin
0.15
V
DD
+0.56
(1)
--
V
hys
I/O Schmitt trigger voltage hysteresis
(2)
Standard I/Os - 10% V
DD
(3)
-
BOOT0 pin - 0.01 -
I
lkg
Input leakage current
(4)
V
SS
V
IN
V
DD
All I/Os except
BOOT0 and FTf
I/Os
--±50nA
BOOT0
(5)
V
IN
= V
DD
-+2-
µA
BOOT0
V
IN
= V
SS
-0-
V
DD
V
IN
5V
FT I/Os
--200
nA
V
DD
V
IN
5V
FTf I/Os
--500
V
DD
V
IN
5V
BOOT0
- - 10 µA
R
PU
Weak pull-up equivalent resistor
(6)
V
IN
= V
SS
25 45 65 kΩ
R
PD
Weak pull-down equivalent resistor
(6)
V
IN
= V
DD
25 45 65 kΩ
C
IO
I/O pin capacitance - - 5 - pF
1. Guaranteed by characterization, not tested in production
2. Hysteresis voltage between Schmitt trigger switching levels. Guaranteed by characterization results, not tested in production.
3. With a minimum of 200 mV. Guaranteed by characterization results, not tested in production.
4. The max. value may be exceeded if negative current is injected on adjacent pins.
5. BOOT0/PB9 pin limitation: typical input leakage current = 2 µA
and input frequency limited to 10 kHz (1.65 V < V
DD
< 2.7 V)
and 5 MHz (2.7 V < V
DD
<3.6V).
6. Pull-up and pull-down resistors are designed with a true resistance in series with a switchable PMOS/NMOS. This
MOS/NMOS contribution to the series resistance is minimum (~10% order).
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