RF-Star RF-43UP - Page 10

RF-43UP
www.szrfstar.com V1.3 - Jan., 2020
Shenzhen RF-star Technology Co., Ltd. Page 9 of 34
(Cannot be NC, need be grounded if not used.)
7
RXD
I
UART RX signal
8
TXD
O
UART TX signal
9
EN / AUX
O
Pull the serial port high before sending data and pull low after sending.
Timed wake-up pin, pull high when wake-up.
Pull high when module sending data, pull low after sending.
10
VCC
-
Power supply: 3.3 V ~ 5.2 V.
11
GND
-
Ground
12
GND
-
Ground
13
GND
-
Ground
14
GND
-
Ground
15
GND
-
Ground