Datasheet

DocID14771 Rev 15 73/121
STM8S105x4/6 Electrical characteristics
90
10.3.6 I/O port pin characteristics
General characteristics
Subject to general operating conditions for V
DD
and T
A
unless otherwise specified. All
unused pins must be kept at a fixed voltage, using the output mode of the I/O for example or
an external pull-up or pull-down resistor.
Table 37. I/O static characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
IL
Input low level voltage
V
DD
= 5 V
-0.3 V - 0.3 x V
DD
V
V
IH
Input high level voltage 0.7 x V
DD
-V
DD
+ 0.3 V
V
hys
Hysteresis
(1)
-700-mV
R
pu
Pull-up resistor V
DD
= 5 V, V
IN
= V
SS
30 55 80 k
t
R
, t
F
Rise and fall time
(10% - 90%)
Fast I/Os
Load = 50 pF
--35
(2)
ns
Standard and high sink I/Os
Load = 50 pF
--125
(2)
t
R
, t
F
Rise and fall time
(10% - 90%)
Fast I/Os
Load = 20 pF
--20
(2)
ns
Standard and high sink I/Os
Load = 20 pF
--50
(2)
I
lkg
Digital input leakage
current
V
SS
V
IN
V
DD
--±1
(3)
µA
I
lkg ana
Analog input leakage
current
V
SS
V
IN
V
DD
--±250
(3)
nA
I
lkg(inj)
Leakage current in
adjacent I/O
Injection current ±4 mA - - ±1
(3)
µA
1. Hysteresis voltage between Schmitt trigger switching levels. Based on characterization results, not tested in production.
2. Data guaranteed by design.
3. Data based on characterization results, not tested in production