SIM800C datasheet(49/52 Pages) SIMCOM

49 / 52 page

Smart Machine Smart Decision

SIM800C_Hardware_Design_V1.02

2015-4-27

II. Multiplexing Function

Table 43: Multiplexing function

Pin name

Reset

Pin number

Mode 0(default)

Mode 1

Mode 2

Mode 3

STATUS

I/PD

STATUS

GPIO19

SIM_DET

I/PD

SIM_DET

GPIO20

EINT14

NETLIGHT

I/PD

NETLIGHT

GPIO17

UTXD3

UART1_DTR

I/PD

UART1_DTR

GPIO18

EINT13

UART1_RI

I/PD

UART1_RI

GPIO13

EINT11

UART1_DCD

I/PD

UART1_DCD

GPIO12

URXD3

UART1_CTS

I/PD

UART1_CTS

GPIO14

EINT12

UART1_RTS

I/PD

UART1_RTS

GPIO15

UART1_TXD

GPIO11

UART1_RXD

I/PD

UART1_RXD

GPIO10

UART2_TXD

UART3_TXD

GPIO0

UART2_RXD

I/PD

UART3_RXD

GPIO1

Note: Multiplexing function need different software supply.

III.Terms and Abbreviations

Table 44: Terms and abbreviations

Abbreviation

Description

ADC

Analog-to-Digital Converter

AMR

Adaptive Multi-Rate

Coding Scheme

CTS

Clear to Send

DTE

Data Terminal Equipment (typically computer, terminal, printer)

DTR

Data Terminal Ready

DTX

Discontinuous Transmission

EFR

Enhanced Full Rate

EGSM

Enhanced GSM

ESD

Electrostatic Discharge

ETS

European Telecommunication Standard

Full Rate

GPRS

General Packet Radio Service

GSM

Global Standard for Mobile Communications

Half Rate

Mobile Originated

Mobile Station (GSM engine), also referred to as TE

Mobile Terminated

PAP

Password Authentication Protocol

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