Key Features - Quectel BC66 Hardware Design

2.2. Key Features

The following table describes the detailed features of BC66 module.
Table 2: BC66 Key Features
Feature
Power Supply
Power Saving
Frequency Bands
Transmitting Power
USIM Interface
USB Interface
UART Interfaces
Network Protocols
SMS*
BC66_Hardware_Design
Details

Supply voltage: 2.1V ~ 3.63V

Typical supply voltage: 3.3V
 Typical power consumption: 3.5μA
LTE Cat NB1:

B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B26*/B28/B66

23dBm± 2dB

Support 1.8V USIM card

Conform to USB 1.1 specifications, with maximum data transfer rate up to
12Mbps

Used for software debugging and upgrading

Support USB serial driver under Windows/Linux operating systems
Main UART Port:

Used for AT command communication and data transmission.

By default, the module is in auto-baud mode, and it supports automatic
baud rates not exceeding 115200bps. When powering on the module, the
MCU has to send AT command consecutively to synchronize baud rate
with the module. When OK is returned, it indicates the baud rate has been
synchronized successfully. When the module is woken up from Deep
Sleep mode, the baud rate synchronized during start-up will be used
directly.

Also can be used for firmware upgrade, and in such case, the baud rate is
921600bps by default.
Debug UART Port:

Used for firmware debugging

Default baud rate: 115200bps
Auxiliary UART Port:

Used for firmware debugging

Default baud rate: 115200bps

UDP/TCP/LwM2M/MQTT(s)/SNTP/TLS/CoAP*/PPP*/HTTP*/HTTPS*

Text/PDU Mode
NB-IoT Module Series
BC66 Hardware Design
10 / 59