Chengdu Ebyte Electronic Technology Co,;Ltd
E32-915T30S user manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
6
4
TXD
Output
TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can be
configured as open-drain or push-pull output
5
RXD
Input
TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can be
configured as open-drain or pull-up input. Ground
6
M1
Input
（
weak pull-up
）
Work with M0 to decide 4 working modes of module (not suspended, if not
used, could be grounded).
7
M0
Input
（
weak pull-up
）
Work with M1 to decide 4 working modes of module (not suspended, if not
used, could be grounded).
11
ANT
output
High frequency signal output, 50 ohm characteristic impedance
12
GND
Ground
13
GND
Ground
14
GND
Ground
18
NC
Input/output
can be suspended
19
NC
Input/output
can be suspended
20
NC
Input/output
can be suspended
21
NC
Input
can be suspended
22
NC
Input
can be suspended
23
GND
Input
Ground
24
NC
Input
can be suspended
