Users Manual

GSM/GPRS Module Series
M66 Hardware Design
M66_Hardware_Design Confidential / Released 14 / 82
1.
1
) Within operation temperature range, the module is 3GPP compliant.
2)
Within extended temperature range, the module remains the ability to
establish and maintain a voice, SMS, data transmission, emergency call,
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 the normal operating
 Full Rate (ETS 06.10)
 Enhanced Full Rate (ETS 06.50/06.60/06.80)
 Adaptive Multi-Rate (AMR)
 Echo Suppression
 Noise Reduction
UART Interfaces
UART Port:
 Seven lines on UART port interface
 Used for AT command, GPRS data
 Multiplexing function
 Support autobauding from 4800bps to 115200bps
Debug Port:
 Two lines on debug port interface DBG_TXD and DBG_RXD
 Debug Port only used for firmware debugging
Auxiliary Port:
 Used for AT command
Phonebook Management Support phonebook types: SM, ME, ON, MC, RC, DC, LD, LA
SIM Application Toolkit Support SAT class 3, GSM 11.14 Release 99
Real Time Clock Supported
Physical Characteristics
Size: 15.8±0.15 × 17.7±0.15 × 2.3±0.2mm
Weight: Approx. 1.3g
Firmware Upgrade Firmware upgrade via UART Port
Antenna Interface Connected to antenna pad with 50 Ohm impedance control
NOTES