Size And Pin Definition - Ebyte E31-433T30D User Manual

Chengdu Ebyte Electronic Technology Co.,Ltd.

3. Size and pin definition

No. Name
1
2
3
RXD
4
TXD
5
AUX
6
VCC
7
GND
8
Fixed orifice
9
Fixed orifice
10
Fixed orifice
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Direction
Input
M 0
（Weak pull-up）
Input
M 1
（weak pull-up）
Input
Output
Output
Input
Input
Work with M 1 to decide 4 working modes of module (not suspended, if
not used, could be grounded).
Work with M 0 to decide 4 working modes of module (not suspended, if
not used, could be grounded).
TTL UART inputs, connects to external (M CU, PC) TXD output pin. Can
be configured as open-drain or pull-up input.
TTL UART outputs, connects to external RXD (M CU, PC) input pin. Can
be configured as open-drain or push-pull output
To indicate module ' s working status & wakes up the external M CU.
During the procedure of self-check initialization, the pin outputs low
level. Can be configured as push-pull output (suspending is allowed).
Power supply ：2.8~ 5.5V DC
Ground
Fixed orifice
Fixed orifice
Fixed orifice
E31-433T30D User Manual
Function
5