Table of Contents
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Pin Name
Pin No.
USB_MODE
47
VUSB_3V3
49
USB_DP
50
USB_DM
51
Reserved Pins
Pin Name
Pin No.
2~6, 8,
21~23,
25, 26,
RESERVED
30~33,
44~46,
48,
52~58
NOTES
1.
Keep all unused pins unconnected.
"*" means under development.
2.
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.
BC66-NA_Hardware_Design
I/O
Description
Pull down the pin
to achieve USB
DI
download
function
USB power
PI
supply
USB differential
IO
data (+)
USB differential
IO
data (-)
I/O
Description
BC66-NA Hardware Design
DC Characteristics
Vnorm=3.3V
DC Characteristics
NB-IoT Module Series
Comment
Conform to USB 1.1
specifications.
Request 90 Ω
differential
impedance.
Comment
Keep these pins
unconnected.
18 / 58
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