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 GSM Module Modem Location:HOMEPAGE >> PRODUCTS >> GSM Module Modem

ML8011 TTL GSM Module


Technical Specification 

 

Feature

Implementation, ml8011 ttl gprs modem

Power supply

Single supply voltage 3.6V – 4.6V,Normal 4.0V

Frequency bands

● Quad-band: GSM850, GSM900, DCS1800, PCS1900.

● The module can search these frequency bands automatically

● The frequency bands can be set by AT command.

● Compliant to GSM Phase 2/2+

Transmitting power

● Class 4 (2W) at GSM850 and GSM900

● Class 1 (1W) at DCS1800 and PCS1900

GPRS connectivity

● GPRS multi-slot class 12 (default)

● GPRS multi-slot class 1~12 (configurable)

● GPRS mobile station class B

Temperature range

● Normal operation: -35°C ~ +80°C

● Restricted operation: -45°C ~ -35°C and +80°C ~ +85°C 1)

● Storage temperature: -45°C ~ +90°C

DATA GPRS:

CSD:

● GPRS data downlink transfer: max. 85.6 kbps

● GPRS data uplink transfer: max. 85.6 kbps

● Coding scheme: CS-1, CS-2, CS-3 and CS-4

● Support the protocols PAP (Password Authentication Protocol)

usually used for PPP connections

● Internet service protocols TCP/UDP/FTP/HTTP/SMS

● Support Packet Switched Broadcast Control Channel (PBCCH)

● CSD transmission rates: 2.4, 4.8, 9.6, 14.4 kbps non-transparent

● Unstructured Supplementary Services Data (USSD) support

SMS

● MT, MO, CB, Text and PDU mode

● SMS storage: SIM card

FAX

Group 3 Class 1 and Class 2

SIM interface

Port SIM card: 1.8V, 3V, Protected against ESD with a TVS diode array.

Serial interface

● Support from 4800 bps to 115200 bps, default auto baud rate

● Support TTL 3.3V Level

● Embed standard AT commandGSM07.05 and 07.07

Phonebook management

Support phonebook types: SM, FD, LD, RC, ON, MC

SIM Application Toolkit

Support SAT class 3, GSM 11.14 Release 99

Physical characteristics

45*32.5*12mm

 

 

Pin Description

 

PIN NAME

PIN

I/O

DESCRIPTION

DC CHARATERISTICS

COMMENT

VBAT

1,2

I

Module main power supply. The power supply of module has to be a single voltage source of VBAT = 3.3V~4.6V,it must be able to provide sufficient current in a transmitting burst which typically rises to 2A

Vmax = 4.6V

Vmin = 3.3V

Vnormal = 4.0V

Recommend to used MIC29302/SP29302 High-Current Low-Dropout Regulators

VOUT

10

O

Supply 3.3V voltage for external circuit

Vmax = 3.4V

Vmin = 3.2V

Vnormal = 3.3V

Imax = 100mA

1. If unused, keep this pin open.

2. Recommend to added a 2.2~10uF bypass capacitor when using this pin to power supply.

GND

3,4,15

I

Power and digital ground

PWRKEY

5

I

Power on/off control input, PWRKEY should be pulled up for a moment to turn on or turn off the module.

TTL (3.3V) level, it can be connected to the MCU/ARM I/O port indirectly.

STATUS

7

O

Used to indicate the module operating status. High level indicates module power on and low level indicates power off.

TTL (3.3V) level, it can be connected to the MCU/ARM I/O port indirectly.

If unused, keep this pin open.

RXD

8

I

TTL:

UART Receiving data.

TTL:

Logic L:0V±0.3V;

Logic H: 3.3V±0.3V.

TXD

9

O

TTL:

UART Transmitting data.

RI

6

O

Ring indicator

TTL (3.3V) level, it can be connected to the MCU/ARM I/O port indirectly.

If unused, keep these pin open.

CTS

11

O

Clear to sent

RTS

12

I

Request to sent

DTR

13

I

Data terminal ready

DCD

14

O

Data carrier detection

 

 
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