M20 Hardware Design
M20_HD_V1.01 - 70 -
5.6 Electro-static discharge
Although the GSM engine is generally protected against Electrostatic Discharge (ESD), ESD
protection precautions should still be emphasized. Proper ESD handing and packaging procedures
must be applied throughout the processing, handing and operation of any application using the
module.
The measured values of module are shown as the following table:
Table 36: The ESD endurance (Temperature: 25 , Humidity: 45 %)℃
Part Contact discharge Air discharge
VBAT,GND ±5KV ±10KV
PWRKEY ±4KV ±8KV
Antenna port ±5KV ±10KV
SPK1P/1N, SPK2P/2N,
MIC1P/1N, MIC2P/2N
±4KV ±8KV
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