SIM800L datasheet(50/73 Pages) SIMCOM

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4.15.1. NETLIGHT Multiplexing Function

Table 35: NETLIGHT multiplexing function

Pin name

Pin number

Mode 0(default)

Mode 1

NETLIGHT

GPIO17

Note: Multiplexing function need different software supply.

4.16. Operating Status Indication

The pin4 is for operating status indication of the module. The pin output is high when module is powered on,

and output is low when module is powered down.

Table 36: Pin definition of the STATUS

Pin name

Pin number

Description

STATUS

Operating status indication

Note: For timing about STATUS, please reference to the chapter “4.2 power on/down scenarios”

4.16.1. STATUS Multiplexing Function

Table 37: STATUS multiplexing function

Pin name

Pin number

Mode 0(default)

Mode 1

STATUS

GPIO4

Note: Multiplexing function need different software supply.

4.17. LED Interface

SIM800H&SIM800L provides two LED driver pin. The two pin are open-drain output.

Table 38: Pin definition of the LED

Pin name

Pin number

Description

ISINK0

Sink current for LCM module

ISINK1

Sink current for keypad LED

Reference circuit is recommended in the following figure:

SIM800H&SIM800L_Hardware Design_V2.02

2015-07-27

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