User's Manual

S76S
LoRa Wireless Communication Module
H
901-10201
Mar 22th ,2017
6 of 18
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2-5. Digital Characteristics
2-5-1. DC characteristics
Input voltage levels
Symbol
Description
Conditions
Min
Typ.
Max
Unit
VIH
I/O input
high level voltage
NRST
0.7xVDD33
-
-
V
BOOT0
0.7xVDD33
-
-
V
GPIO
0.7xVDD33
-
-
V
VIL
I/O input
low level voltage
NRST
-
-
0.3xVDD33
V
BOOT0
-
-
0.14xVDD33
V
GPIO
-
-
0.3xVDD33
V
R
PU
Weak pull-up
Equivalent resistor
V
IN
= GND
30
45
60
K Ω
R
PD
Weak pull-down
Equivalent resistor
V
IN
=VDD33
30
45
60
K Ω
Output voltage levels
Symbol
Description
Conditions
Min
Max
Unit
V
OL
Output low level voltage for
an I/O pin
CMOS port / IIO = +8
mA
2.7 V≦VDD33≦3.6 V
-
0.4
V
V
OH
Output high level voltage for
an I/O pin
VDD33-0.4
-
V
OL
Output low level voltage for
an I/O pin
TTL port / IIO =+ 8 mA
2.7 V≦VDD33≦3.6 V
-
0.4
V
OH
Output high level voltage for
an I/O pin
TTL port / IIO =- 6 mA
2.7 V≦VDD33≦3.6 V
2.4
-
V
OL
Output low level voltage for
an I/O pin
IIO = +15 mA
2.7 V≦VDD33≦3.6 V
-
1.3
V
OH
Output high level voltage for
an I/O pin
IIO = -15 mA
2.7 V≦VDD33≦3.6 V
VDD33-1.3
-
V
OL
Output low level voltage for
an I/O pin
IIO = +4 mA
1.65 V≦VDD33≦3.6 V
-
0.45
V
OH
Output high level voltage for
an I/O pin
IIO = +4 mA
1.65 V≦VDD33≦3.6 V
VDD33-0.45
-