Application Guide - SimCom SIM5215 Hardware Design

GPIO4
Note: The output driver current of GPIOs is 1mA at the lower supply voltage and 2mA at the higher supply voltage.

3.10.2 Application Guide

Network status
GPIO1 is used to control Network Status LED; application circuit is shown below.
Note: The value of resistor Rx depends on LED characteristic.
Table 26: LED status
LED Status
Always On
200ms ON, 200ms OFF
800ms ON, 800ms OFF
Off
Flight mode control
GPIO4 controls SIM5215&SIM5216 module to enter or exit the Flight mode. In Flight mode,
SIM5215&SIM5216 closes RF function to prevent interference with other equipments or minimize current
consumption. Bidirectional ESD protection component is suggested to add on GPIO4.
SIM5215&SIM5216_Hardware Design_V2.02
unused, left open.
Input PIN as RF operating control.
H: Normal Mode L:Flight Mode
32 I
If it is unused, left open.
Figure 32: Application circuit
Module Status
Searching Network/Call Connect
Data Transmit
Registered network
Power off / Sleep
Smart Machine Smart Decision
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2012-08-31