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HUAWEI EM820W HSPA+ PC Embedded Module
Hardware Guide Electrical and Reliability Features
Issue 01 (2010-12-31)
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