Specifications

B100 Datasheet
© 2021 Easylinkin All Rights Reserved 4
2.2 Module pin description
。
USB
USB DP 38 IO USB DP
USB DM 36 IO USB DM
Table 1Pin Description
2.3
Reference design
It is strongly recommended that the capacitances of 220uF // 220uF // 100nF // 100pF should be placed as
close to the Power input pin (Pin2,24,39,41,52) of the Mini-PCie connector as possible in the layout!
Pin name Pin number
IO
Description
Remarks
Power interface
VCC
2,24,39,41,52
I
Module power input pin VCC 3.3V, VDC(33V士0.2V)
Current load
capacity ≥ 500 Ma
GND
4,9,15,18,21,26,27,
29,34,35,37,40,43,50
Ground connection
SPI
H OST_SCK
3
I
SX1302/SX1261 SPI clock signal
Option
HOST_MISO
5
I SX1302/SX1261 SPI data output
Option
HOST_MOSI
6
SX1302/SX1261 SPI data input
Option
HOST_CSN
7
I
SX1302 SPI chip select signal
Option
SX1261 _ NSS
17
I
SX1261 SPI chip select signal
Option
GPIO
POW ER _EN
48
IO
Sx1250 Power supply enable
SX1261_DI01
46
IO
SX1261 general IO 1
SX1261 _DI02
44
IO
SX1261 general IO 2
GPIO 8
32
IO
SX1302 general IO 8
GPIO 6
30
IO
ECC RESET
Option
SX1261_BU SY
23
IO
SX1261 Busy indicator
NC
NC
8,10,11,12,13,14,16,
17 ,20,22,23,25,28,31,
33,42,45,47,49,51
SX13 02_RESET
1
I
Sx1302 reset pin
Option
SX1 261_RESET
22 I SX1261 reset pin
Option
GPS_IN
19
I
GPS second pulse signal input
Urat
SX1302_UART1_RX
I 12
IO DEBUG_JTCK-SWCLK-->TX
SX1302_ UART1_TX
I
14
IO DEBUG_JTMS-SWDIO-->RX