Datasheet

STM8S207xx, STM8S208xx Electrical characteristics
Doc ID 14733 Rev 12 69/103
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 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 kΩ
t
R
, t
F
Rise and fall time
(10% - 90%)
Fast I/Os
Load = 50 pF
20
(2)
ns
Standard and high sink I/Os
Load = 50 pF
125
(2)
Fast I/Os
Load = 20 pF
35
(3)
Standard and high sink I/Os
Load = 20 pF
125
(3)
I
lkg
Input leakage
current,
analog and digital
V
SS
≤ V
IN
≤ V
DD
±1 µA
I
lkg ana
Analog input
leakage current
V
SS
≤ V
IN
≤ V
DD
±250
(2)
nA
I
lkg(inj)
Leakage current in
adjacent I/O
(2)
Injection current ±4 mA ±1
(2)
µA
1. Hysteresis voltage between Schmitt trigger switching levels. Based on characterization results, not tested in production.
2. Data based on characterization results, not tested in production.
3. Guaranteed by design.