11
2.7
PIN Description
PIN
Direction
Description
USB Connector
I
The USB dongle is powered from the USB port (3.8V-5V)
LED1(Power)
O
LED on powering on the USB
LED (NET)
O
Indicate the BC660 network activity status
USB/BATT
jumper
I
Provide power to the BC600 through USB connector or through external
battery power source
3.3V
O
3.3V generated by the on-board regulator. Maximum current
drawn is 3A. The regulator also provides power to BC660
5V
O
5V generated from the board. The board is supplied with power
from USB connector (typical 5V)
BATT
I
To provide power source from external battery (3.3V). If
powered from battery, no connection through USB port is
needed
GND
Ground
UART (TXD)
O
UART TX line to communicate with BC660
UART (RXD)
I
UART RTX line to communicate with BC660
RI
O
Ring indication
EINT
I
External interrupt pin dedicated to waking up the
module from Deep/Light Sleep mode
RESET
I
Reset the BC660
ADC0
I
Connected to BC660. General purpose analogue to digital converter
GPIO1
IO
Connected to BC660. General purpose IO
GPIO2
IO
Connected to BC660. General purpose IO
GPIO3
IO
Connected to BC660. General purpose IO
GPIO4
IO
Connected to BC660. General purpose IO
USIM
I
Used to insert a Nano USIM. Connected to BG77
