Chengdu Ebyte Electronic Technology Co,;Ltd
E70-900TxxSx_user manual
Copyright ©2012–2023
，
Chengdu Ebyte Electronic Technology Co,;Ltd
12
6
NC
Keep the feet
Leave unused, to be suspended
7
NC
Keep the feet
Leave unused, to be suspended
8
VCC
-
Positive power reference
，
voltage range
：
2.2V ~ 3.8V DC
9
GND
Reference ground
Ground electrode
10
GND
Reference ground
Ground electrode
11
PA_EN
Output
External PA control output, high level effective (hoverable)
12
LNA_EN
Output
External LNA control output, high level effective (hoverable)
13
M2
Input
M2M1M0 together determines 8 working modes of the module. When
used, a 1K protection resistor is connected in series externally
14
RESET
Input
Reset pin
15
GND
Reference ground
Ground electrode
16
AUX
Output
It is used to indicate the working state of the module. The user wakes up
the external MCU and outputs the low level during the initialization of
self-check on power. It can be configured as open-drain output or push-pull
output, as shown in parameter Settings (it can be suspended).
17
TXD
Output
Can also be used as TTL serial output, connected to the external RXD input
pin; It can be configured for open drain or push-pull output. See parameter
Settings for details
18
TCKC
Input
JTAG TCKC
19
TMSC
Input
JTAG TMSC
20
RXD
Inpu
TTL serial input, connect to external TXD output pin; It can be configured
as open drain or pull up input. See parameter Settings for details
21
M1
Input
M2M1M0 combination determines 8 working modes of the module (not
suspended, if not grounded)
22
M0
Input
M2M1M0 combination determines 8 working modes of the module (not
suspended, if not grounded)
23
GND
Reference ground
Ground electrode
24
ANT
-
Antenna
（
50Ω characteristic impedance
）
This product can achieve Pin compatibility, Pin to Pin replacement
The single-chip microcomputer control PA LNA truth value table is as follows
：
PA_EN
LNA_EN
Transmitting
1
0
Receiving
0
1
Sleeping
0
0
