Quectel BC66 - Turn off

NB-IoT Module Series
BC66 Hardware Design
BC66_Hardware_Design 18 / 59
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
USB_MODE
47
DI
Pull down the pin
to achieve USB
download
function
VUSB_3V3
49
PI
USB power
supply
Vnorm=3.3V
USB_DP
50
IO
USB differential
data (+)
Conform to USB 1.1
specifications.
Request 90 Ω
differential
impedance.
USB_DM
51
IO
USB differential
data (-)
Reserved Pins
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
RESERVED
2~6, 8,
21~23,
25, 26,
30~33,
44~46,
48,
52~58
Keep these pins
unconnected.
Keep all reserved and unused pins unconnected.
3.4. Operating Modes
The module mainly consists of AP and modem, and the tables below describe the operating modes of the
AP, modem and the entire module.
Table 5: AP Operating Modes
Mode
Description
Normal
In normal mode, the AP tasks are running (AT command communication, etc.).
Idle
When all AP tasks are suspended, the AP will enter idle mode.
NOTE