Chengdu Ebyte Electronic Technology Co., Ltd. E220-400T30S User manual
Copyright ©2012–
2018
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
7
8
TXD
Output
TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can be
configured as open-drain or push-pull output
9
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 (can be suspended).
10
VCC
-
Power supply
：
3.0~ 5.5V DC
11
GND
-
Ground
12
NC
-
Can be suspended
13
GND
-
Ground
14
NC
-
Can be suspended
15
NC
-
Can be suspended
16
NC
-
Can be suspended
17
NC
-
Can be suspended
18
NC
-
Can be suspended
19
GND
-
Ground
20
GND
-
Ground
21
ANT
-
Ground
22
GND
-
High frequency signal output, 50 ohm characteristic impedance
Summary of Contents for E220-400T30S
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