Product Info

LPWA Module Series
BC66-NA Hardware Design
BC66-NA_Hardware_Design 21 / 59
Pin Name Pin No. I/O Description DC Characteristics Comment
RXD_AUX 28 DI Receive data
1.8V power domain.
TXD_AUX 29 DO Transmit data
Debug UART Port
Pin Name Pin No. I/O Description DC Characteristics Comment
RXD_DBG 38 DI Receive data
1.8V power domain.
TXD_DBG 39 DO Transmit data
Ringing Signal
Pin Name Pin No. I/O Description DC Characteristics Comment
RI 20 DO
Ring indication
signal
1.8V power domain.
USIM Interface
Pin Name Pin No. I/O Description DC Characteristics Comment
SIM_VDD 14 DO
USIM card
power supply
Vnorm=1.8V
SIM_RST 12 DO
USIM card reset
signal
V
OL
max=0.15×SIM_VDD
V
OH
min=0.85×SIM_VDD
SIM_DATA 11 IO
USIM card data
signal
V
IL
max=0.25×SIM_VDD
V
IH
min=0.75×SIM_VDD
V
OL
max=0.15×SIM_VDD
V
OH
min=0.85×SIM_VDD
SIM_CLK 13 DO
USIM card clock
signal
V
OL
max=0.15×SIM_VDD
V
OH
min=0.85×SIM_VDD
SIM_GND 10 GND
Specified
ground for USIM
card
Antenna Interface
Pin Name Pin No. I/O Description DC Characteristics Comment
RF_ANT 35 IO
RF antenna
interface
50Ω characteristic
impedance
USB Interface
Pin Name Pin No. I/O Description DC Characteristics Comment