Electrostatic Discharge - SimCom SIM548C HD V1.01 Hardware Design

SIM548C Hardware Design
Power consumption in the PTF mode
Again, a typical setting of 1800 seconds PTF interval is considered.
Assuming it takes 8 seconds to compute a good position since the start of a cycle, the average
current and power consumption of each typical cycle is：
Iavg = (65 mA * 8160 ms + 1 mA * 1791840 ms) / 1800 seconds = 1.290 mA
Pavg = 3.3 V * 1.290 mA = 4.257 mW
Figure 41: Power consumption in the PTF mode
Note:
1. When the user wants to use Power Down mode or Push-To-Fix mode, the RTC battery must
be 2.5V+.If the RTC battery level is lower than 2.5V, the module will not go into PTF mode.
2. Push-To-Fix mode is only available in protocol of :SiRF binary, please refer to the document
[2].

6.5 Electrostatic discharge

The GSM engine is not protected against Electrostatic Discharge (ESD) in general. Therefore, it is
subject to ESD handing precautions that typically apply to ESD sensitive components. Proper
ESD handing and packaging procedures must be applied throughout the processing, handing and
operation of any application using a SIM548C module.
The measured values of SIM548C are shown as the following table:
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SIM548C_HD_V1.01 09.05.2008