Size And Pin Definition - Ebyte E30 Series User Manual

Chengdu Ebyte Electronic Technology Co,;Ltd

3 Size and pin definition.

No. Name
1
2
3 RXD
4 TXD
5 AUX
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Direction
Input
M0
（Weak pull-up）
Input
M1
（weak pull-up）
Input
Output
Output
Work with M1 to decide 4 working modes of module (not suspended, if
not used, could be grounded).
Work with M0 to decide 4 working modes of module (not suspended, if
not used, could be grounded).
TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can
be configured as open-drain or pull-up input.
TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can
be configured as open-drain or push-pull output
To indicate module ' s working status & wakes up the external MCU.
During the procedure of self-check initialization, the pin outputs low
E30-490T20D user manual
Function
5