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Chengdu Ebyte Electronic Technology Co,;Ltd
Communication interface
Package
Connector
Size
Antenna
3 Size and pin definition
No.
Name
1
M0
2
M1
3
RXD
4
TXD
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd.
UART
SMT
2.00mm
17 * 25.5mm
Stamp hole
Direction
Input
Work with M1 to decide 4 working modes of module (not
（weak pull-up）
suspended, if not used, could be grounded).
Input
Work with M0 to decide 4 working modes of module (not
（weak pull-up）
suspended, if not used, could be grounded).
TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can
input
be configured as open-drain or pull-up input.
TTL UART outputs, connects to external RXD (MCU, PC) input
output
pin. Can be configured as open-drain or push-pull output
E32-433T20S1 user manual
TTL@3.3V
-
-
-
50 ohm impedance
Function
6
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