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STM32L151xx, STM32L152xx
6.3.12
I/O port characteristics
General input/output characteristics
Unless otherwise specified, the parameters given in
performed under conditions summarized in
Table 38.
I/O static characteristics
Symbol
V
Input low level voltage
IL
Standard I/O input high level voltage
V
IH
(2)
FT
I/O input high level voltage
V
Input low level voltage
IL
Standard I/O Input high level voltage
V
IH
(5)
FT
I/O input high level voltage
Standard I/O Schmitt trigger voltage
V
(6)
hys
hysteresis
I
Input leakage current
lkg
R
Weak pull-up equivalent resistor
PU
R
Weak pull-down equivalent resistor
PD
C
I/O pin capacitance
IO
1. Guaranteed by design.
2. FT = 5V tolerant. To sustain a voltage higher than V
3. Tested in production
4. 0.7V
for 5V-tolerant receiver
DD
5. FT = Five-volt tolerant.
6. Hysteresis voltage between Schmitt trigger switching levels. Based on characterization, not tested in production.
7. With a minimum of 200 mV. Based on characterization, not tested in production.
8. The max. value may be exceeded if negative current is injected on adjacent pins.
Parameter
(8)(3)
(9)(3)
(9)(3)
Doc ID 17659 Rev 6
Table 38
Table
9. All I/Os are CMOS and TTL compliant.
Conditions
TTL ports
≤
≤
2.7 V
V
3.6 V
DD
CMOS ports
≤
≤
1.65 V
V
3.6 V
DD
CMOS ports
≤
≤
1.65 V
V
3.6 V
DD
CMOS ports
≤
≤
1.65 V
V
2.0 V
DD
CMOS ports
≤
≤
2.0 V
V
3.6 V
DD
≤
≤
V
V
V
SS
IN
DD
I/Os with LCD
≤
≤
V
V
V
SS
IN
DD
I/Os with analog switches
≤
≤
V
V
V
SS
IN
DD
I/Os with analog switches
and LCD
≤
≤
V
V
V
SS
IN
DD
I/Os with USB
≤
≤
V
V
V
SS
IN
DD
Standard I/Os
=
V
V
IN
SS
=
V
V
IN
DD
+0.5 the internal pull-up/pull-down resistors must be disabled.
DD
Electrical characteristics
are derived from tests
Min
Typ
Max
V
- 0.3
0.8
SS
V
DD
(1)
2
5.5V
–0.3
0.3V
V
DD
0.7
5.25
(3)(4)
V
DD
5.5
(7)
10% V
DD
±50
±50
±50
TBD
±50
30
45
60
30
45
60
5
Unit
+0.3
(3)
DD
+0.3
V
nA
kΩ
kΩ
pF
73/109
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