Datasheet

DocID028800 Rev 1 125/200
STM32L431xx Electrical characteristics
168
6.3.14 I/O port characteristics
General input/output characteristics
Unless otherwise specified, the parameters given in Table 59 are derived from tests
performed under the conditions summarized in Table 21: General operating conditions. All
I/Os are designed as CMOS- and TTL-compliant.
Table 59. I/O static characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
IL
(1)
I/O input low level
voltage
1.62 V<V
DDIOx
<3.6 V - - 0.3xV
DDIOx
(2)
V
I/O input low level
voltage
1.62 V<V
DDIOx
<3.6 V - - 0.39xV
DDIOx
-0.06
(3)
I/O input low level
voltage
1.08 V<V
DDIOx
<1.62 V - - 0.43xV
DDIOx
-0.1
(3)
V
IH
(1)
I/O input high level
voltage
1.62 V<V
DDIOx
<3.6 V 0.7xV
DDIOx
(2)
--
V
I/O input high level
voltage
1.62 V<V
DDIOx
<3.6 V 0.49xV
DDIOX
+0.26
(3)
--
I/O input high level
voltage
1.08 V<V
DDIOx
<1.62 V 0.61xV
DDIOX
+0.05
(3)
--
V
hys
(3)
TT_xx, FT_xxx and
NRST I/O input
hysteresis
1.62 V<V
DDIOx
<3.6 V - 200 -
mV
FT_sx 1.08 V<V
DDIOx
<1.62 V - 150 -
I
lkg
FT_xx input leakage
current
(3)
V
IN
Max(V
DDXXX
)
(4)
--±100
nA
Max(V
DDXXX
) V
IN
Max(V
DDXXX
)+1 V
(4)(5)
--650
(3)(6)
Max(V
DDXXX
)+1 V <
VIN 5.5 V
(3)(5)
- - 200
(6)
FT_u and PC3 IO
V
IN
Max(V
DDXXX
)
(4)
--±150
Max(V
DDXXX
) V
IN
Max(V
DDXXX
)+1 V
(4)
- - 2500
(3)(7)
Max(V
DDXXX
)+1 V <
VIN 5.5 V
(4)(5)(7)
- - 250
(7)
TT_xx input leakage
current
V
IN
Max(V
DDXXX
)
(6)
--±150
Max(V
DDXXX
) V
IN
<
3.6 V
(6)
- - 2000
(3)
R
PU
Weak pull-up
equivalent resistor
(8)
V
IN
= V
SS
25 40 55 k
R
PD
Weak pull-down
equivalent resistor
(8)
V
IN
= V
DDIOx
25 40 55 k
C
IO
I/O pin capacitance - - 5 - pF
1. Refer to Figure 27: I/O input characteristics.
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.