SIM800L datasheet(13/73 Pages) SIMCOM

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SIM800H&SIM800L_Hardware Design_V2.02

2015-07-27

Timing functions

Use AT command set

Physical characteristics

Size: 17.8*15.8*2.4mm

Weight:1.35g

Firmware upgrade

Main serial port or USB port.(recommend to use USB port)

Table 3: Coding schemes and maximum net data rates over air interface

Coding scheme

1 timeslot

2 timeslot

4 timeslot

CS-1

9.05kbps

18.1kbps

36.2kbps

CS-2

13.4kbps

26.8kbps

53.6kbps

CS-3

15.6kbps

31.2kbps

62.4kbps

CS-4

21.4kbps

42.8kbps

85.6kbps

2.3. Operating Mode

The table below summarizes the various operating modes of SIM800H&SIM800L.

Table 4: Overview of operating modes

Mode

Function

GSM/GPRS

SLEEP

Module will automatically go into sleep mode if the conditions of sleep

mode are enabling and there is no on air and no hardware interrupt (such as

GPIO interrupt or data on serial port).

In this case, the current consumption of module will reduce to the minimal

level.

In sleep mode, the module can still receive paging message and SMS.

GSM

IDLE

Software is active. Module is registered to the GSM network, and the

module is ready to communicate.

GSM

TALK

Connection between two subscribers is in progress. In this case, the power

consumption depends on network settings such as DTX off/on,

FR/EFR/HR, hopping sequences, antenna.

GPRS

STANDBY

Module is ready for GPRS data transfer, but no data is currently sent or

received. In this case, power consumption depends on network settings and

GPRS configuration.

Normal

operation

GPRS

DATA

There is GPRS data transfer (PPP or TCP or UDP) in progress. In this case,

power consumption is related with network settings (e.g. power control

level); uplink/downlink data rates and GPRS configuration (e.g. used

multi-slot settings).

Power down

Normal power down by sending AT command “AT+CPOWD=1” or using the PWRKEY.

The power management unit shuts down the power supply for the baseband part of the

module, and only the power supply for the RTC is remained. Software is not active. The

serial port is not accessible. Power supply (connected to VBAT) remains applied.

Minimum

functionality

mode

AT command “AT+CFUN” can be used to set the module to a minimum functionality mode

without removing the power supply. In this mode, the RF part of the module will not work

or the SIM card will not be accessible, or both RF part and SIM card will be closed, and the

serial port is still accessible. The power consumption in this mode is lower than normal

mode.

SIM800L 数据表(PDF) 13 Page - SIMCom

SIM800L 数据表(HTML) 13 Page - SIMCom

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