Chengdu Ebyte Electronic Technology Co,;Ltd
E62-433T30D user manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co,;Ltd
5
1
M0
Input
（
weak pull-up
）
Work with M1 to decide 2 working modes of module (not suspended, if
not used, could be grounded).
2
LOCK
Input
Module synchronization indication: high level indicates that both sides of
communication have been synchronized, and data transmission can be
carried out; low level indicates that both sides have not been
synchronized, at which time data transmission will lead to data loss
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
be configured as open-drain or push-pull output
5
AUX
Output
To indicate module’ s working status & wakes up the external MCU.
During the procedure of self-check initialization, the pin outputs low
level. Can be configured as push-pull output (suspending is allowed).
6
VCC
Input
Power supply
：
2.1~ 5.5V DC
7
GND
Input
Ground
8/9
Fixed orifice
NC
No Linkage
10/11
Fixed orifice
NC
No Linkage
12/13
Fixed orifice
NC
No Linkage
14/15
Fixed orifice
NC
No Linkage
4 Connect to MCU
No.
Description
（
STM8L MCU
）
1
The UART module is TTL level., please collect with MCU.
