Quectel BG77 - Pin Description

LPWA Module Series
BG77 Hardware Design
BG77_Hardware_Design 13 / 76
1. “*” means under development.
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, 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
P
out
might reduce in their value and exceed the specified tolerances. When the temperature returns to
the normal operating temperature levels, the module will meet 3GPP specifications again.
2.3. Functional Diagram
The following figure shows a block diagram of BG77 and illustrates the major functional parts.
 Power management
 Baseband
 Radio frequency
 Peripheral interfaces
 Used for software debugging and log output
 Support 115200bps baud rate
GNSS UART:
 Used for GNSS data and NMEA sentences output
 115200bps baud rate by default
AT Commands
3GPP TS 27.007 and 3GPP TS 27.005 AT commands, as well as Quectel
enhanced AT commands
Network Indication One NETLIGHT pin for network connectivity status indication
Antenna Interfaces Main antenna (ANT_MAIN) and GNSS antenna (ANT_GNSS) interfaces
Physical Characteristics
 Size: (14.9±0.15)mm × (12.9±0.15)mm × (1.7±0.2)mm
 Weight: approx. 0.73g
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
Firmware Upgrade USB interface and DFOTA*
RoHS All hardware components are fully compliant with EU RoHS directive
NOTES