Electrical characteristics
STM8S207xx, STM8S208xx
10.3.6
I/O port pin characteristics
General characteristics
Subject to general operating conditions for V and T unless otherwise specified. All
DD
A
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
Input low level
voltage
VIL
-0.3
0.3 x VDD
V
Input high level
voltage
VDD = 5 V
VIH
0.7 x VDD
VDD + 0.3 V
V
Vhys
Rpu
Hysteresis(1)
700
45
mV
Pull-up resistor
VDD = 5 V, VIN = VSS
30
60
kΩ
Fast I/Os
Load = 50 pF
20 (2)
ns
ns
Rise and fall time
(10% - 90%)
tR, tF
Standard and high sink I/Os
Load = 50 pF
125 (2)
Input leakage
current,
analog and digital
Ilkg
VSS ≤ VIN ≤ VDD
1
µA
Analog input
leakage current
Ilkg ana
Ilkg(inj)
VSS ≤ VIN ≤ VDD
250 (2)
1(2)
nA
µA
Leakage current in
adjacent I/O(2)
Injection current 4 mA
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.
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