Ebyte E30-433T20S, Руководство пользователя

Страница: 6 / 22

Chengdu Ebyte Electronic Technology Co,;Ltd E30-433T20S user manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co,;Ltd
5
Antenna IPEX/External/Spring 50 ohm impedance
3 Size and pin definition.
No. Name Direction Function
1 M0
Input
（
Weak pull-up
）
Work with M1 to decide 4 working modes of module (not suspended, if
not used, could be grounded).
2 M1
Input
（
weak pull-up
）
Work with M0 to decide 4 working modes of module (not suspended, if
not used, could be grounded).
3 RXD Input
TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can
be configured as open-drain or pull-up input.
4 TXD Output
TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can