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 command(GSM07.05 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 |