Functional Diagram - Quectel BC66 Hardware Design

Data Transmission
Features
AT Commands
Firmware Update
Real Time Clock
Physical
Characteristics
Temperature Range
Antenna Interface
RoHS
NOTES
1)
1. Within operation temperature range, the module is 3GPP compliant.
2)
2. Within extended temperature range, the module remains the ability to establish and maintain
functions such as SMS* and data transmission, without any unrecoverable malfunction. Radio
spectrum and radio network will not be influenced, while one or more specifications, such as P
may exceed the specified tolerances of 3GPP. When the temperature returns to the normal operation
temperature levels, the module will meet 3GPP specifications again.
3. "*" means under development.

2.3. Functional Diagram

The following figure shows a block diagram of BC66 and illustrates the major functional parts.

Radio frequency

Baseband

Power management

Peripheral interfaces
BC66_Hardware_Design

Single-tone: 25.5kbps (DL)/16.7kbps (UL)

Multi-tone: 25.5kbps (DL )/62.5kbps (UL)

3GPP TS 27.005/3GPP TS 27.007 AT commands (3GPP Rel. 13) and
Quectel Enhanced AT commands

Upgrade firmware via DFOTA, USB or main UART port

Supported

Size: (17.7± 0.15)mm × (15.8± 0.15)mm × (2.0± 0.2)mm

Weight: 1.2g± 0.2g

Operation temperature range: -35° C ~ +75° C

Extended temperature range: -40° C ~ +85° C

Storage temperature range: -40° C ~ +90° C

50Ω impedance control

All hardware components are fully compliant with EU RoHS directive
NB-IoT Module Series
BC66 Hardware Design
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