HUAWEI EM820W HSPA+ PC Embedded Module
Hardware Guide
Electrical and Reliability Features
Issue 01 (2010-12-09)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
29
Table 5-1
Working and storage temperatures and humidity for the EM820W module
Specification
Minimum Value
Maximum Value
Unit
Normal working
temperatures [1]
–10 +55 °C
Extreme working
temperatures [2]
–20 to –10
+55 to +70
°C
Ambient temperature for
storage
–40
+85
°C
Moisture
5
95
%
[1]: When the EM820W module works at this temperature, all its RF indexes comply with the
3GPP TS 45.005 specifications.
[2]: When the EM820W module works at this temperature, certain RF indexes do not comply
with the 3GPP TS 45.005 specifications.
5.4 Electrical Criteria of Application Interfaces
Table 5-2 lists electrical features (typical values)
Table 5-2
Electrical features of application interfaces
Parameter
Description
Minimum Value
Maximum Value Unit
V
IH
High-level
input
voltage
0.65*V
DD_PX
V
DD_PX
+0.3
V
V
IL
Low-level
input
voltage
–0.3 0.35*
V
DD_PX
V
I
leak
Input
leakage
current
–0.2 0.2 uA
V
OH
High-level
output voltage
V
DD_PX
–0.45
V
DD_PX
V
V
OL
Low-level
output voltage
0 0.45
V
I
OH
High-level
output current
1.5 mA
I
OL
Low-level
output current
–1.5
mA
