User's Manual

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Hardware Guide
Electrical and Reliability Features
Issue 01 (2011-04-08)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
49
5 Electrical and Reliability Features
5.1 About This Chapter
This chapter describes the electrical and reliability features of the interfaces in the
MC509 module, including:

Extreme Working Conditions

Working and Storage Temperatures and Humidity

Power Supply Features

Reliability Features

EMC and ESD Features
5.2 Extreme Working Conditions
Table 5-1 lists the extreme working conditions for the MC509 module. Using the
MC509 module beyond these conditions may result in permanent damage to the
module.
Table 5-1 Extreme working conditions for the MC509 module
Symbol
Specification
Minimum
Value
Maximum
Value
Unit
VBAT
External power voltage
-0.5
5.0
V
VCOIN
Input voltage of standby
power for the RTC
1.5
3.15
V
V
I
Data pin voltage
-0.4
3.3
V