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M65&M66 Compatible Design

M65 and M66 are quad-band GSM/GPRS modules supporting GSM850/EGSM900/DCS1800/PCS1900. The two modules are compatible, and customers can choose a suitable product for terminal applications according to their needs.

Related Products:

GSM/GPRS M66
GSM/GPRS M65

Overview

 

M65 and M66 are quad-band GSM/GPRS modules supporting GSM850/EGSM900/DCS1800/PCS1900. The two modules are compatible, and customers can choose a suitable product for terminal applications according to their needs.

 

Table 1 Module General Information

 

Module Packaging Dimensions Description
 M65  44 LCC pins  17.7mm × 15.8mm × 2.4mm  Quad-band
 GSM/GPRS
 module
 M66  44 LCC pins  17.7mm × 15.8mm × 2.3mm  Quad-band
 GSM/GPRS
 module

 

Table 2 Features Overview

 

Feature M65 M66 Remarks
 Power Supply

 3.45V~4.25V
 Typ. 4.0V

 3.3V~4.6V
 Typ. 4.0V
 
 Peak Current  2.0A  1.6A  
 Sleep Current  1.2mA @DRX=5
 1.1mA @DRX=9
 1.3mA @DRX=5
 1.2mA @DRX=9
 
 Frequency Bands  Quad-band:
 GSM850/EGSM900/
 DCS1800/PCS1900
 Quad-band:
 GSM850/EGSM900/
 DCS1800/PCS1900
 
 Temperature Range  Operation temperature range:
 -35°C ~ +75°C 1)
 Extended temperature range:
 -40°C ~ +85°C 2)
 Storage temperature range:
 -40°C ~ +90°C
 Operation temperature range:
 -35°C ~ +75°C 1)
 Extended temperature range:
 -40°C ~ +85°C 2)
 Storage temperature range:
 -40°C ~ +90°C
 
 UART Interface  Main UART port:

• Full function serial port

• Used for AT command
transfer and GPRS data
transfer
Adaptive baud rate range:
4800bps~115200bps
Debug UART port:
For software debugging
For firmware upgrade,
fixed baud rate:
921600bps
Auxiliary UART port:
Used for AT command
transfer
The default baud rate of
the module is 115200bps
Adaptive baud rate is not
supported
 Main UART port:
Full function serial port
Used for AT command
transfer and GPRS data
transfer
Adaptive baud rate
range: 4800bps~
115200bps
For firmware upgrade
Debug UART port:
For software debugging
only, baud rate must be
460800bps
Auxiliary UART port:
Used for AT command
transfer
The default baud rate of
the module is 115200bps
Adaptive baud rate is not
supported
 Signal level:
 2.8V
 (U)SIM Interface  1.8V/3.0V (U)SIM card  1.8V/3.0V (U)SIM card  
 Audio Interface  One analog input channel
 Two analog output channels
 One analog input channel
 Two analog output channels
 
 PCM Interface  Not supported  Supported  
 ADC  Supported  Supported  
 BT  Not supported  Support BT 3.0  
 RTC  Vnorm=3.1V
 VI=3.0V~3.5V
 Vnorm=2.8V
 VI=1.5V~3.3V
 
 Firmware Upgrade  Debug UART or DFOTA  Main UART or DFOTA  

 

Note:

1. The part marked in red are the differences between M65 and M65 features.
2. 1) Within operation temperature range, the module is 3GPP compliant.
3. 2) Within extended temperature range, the module remains the ability to establish and maintain a voice, SMS, data transmission, etc. There is no unrecoverable malfunction. There are also no effects on radio spectrum and no harm to radio network. Only one or more parameters like Pout might reduce in their value and exceed the specified tolerances. When the temperature returns to normal operation temperature levels, the module will meet 3GPP specifications again.

 

 

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