Quectel AF20 User Manual

Wi-Fi&Bluetooth Module Series
AF20_Hardware_Design
33
/ 49
4 Electrical Characteristics & Reliability
4.1. Absolute Maximum Ratings
Table 16: Absolute Maximum Ratings
Parameter
Min.
Max.
Unit
VDD_3V3
-0.3
3.46
V
VIO
-0.3
1.89
V
Voltage at digital pins
-0.3
VIO + 0.2
V
Table 17: Recommended Operating Conditions
Parameter
Min.
Typ.
Max.
Unit
VDD_3V3
3.14
3.3
3.46
V
VIO
1.71
1.8
1.89
V
4.2. Digital I/O Characteristics
Table 18: Digital I/O Characteristics
Symbol
Parameter
Min.
Max.
Unit
V
IH
High Level Input Voltage
0.7
×
VIO
VIO + 0.2
V
V
IL
Low Level Input Voltage
-0.3
0.3
×
VIO
V
V
OH
High Level Output Voltage
0.9
×
VIO
VIO
V

Quectel AF20 Specifications

General

Brand	Quectel
Model	AF20
Category	GSM/GPRS Modules
Language	English