Chengdu Ebyte Electronic Technology Co,;Ltd
E70-433TxxSx user manual
Copyright ©2012–2023
，
Chengdu Ebyte Electronic Technology Co,;Ltd
11
1
、
2
、
3
GND
Ground
Ground electrode
4
、
5
、
6
、
7
NC
Reserved pin
Reserved, to be floated
8
VCC
Voltage
：
2.2V ~ 3.8V DC
9
、
10
GND
Ground
Ground electrode
11
PA_EN
Reserved pin
Internal MCU controlled LNA pin, valid in high level, connect to pin 44
12
LNA_EN
Reserved pin
Internal MCU controlled PA pin, valid in high level, connect to pin 45
13
M2
Input
M2, M1, M0 jointly decide the 8 working modes;
An external 1k protective resistor shall be connected in series when in use.
14
RESET
Input
Reset pin, valid in low level
15
GND
Ground
Ground electrode
16
AUX
output
It is used to indicate the operation status of module, for user to wake up the
external MCU, the module outputs low level during self-checking and
initialization at power on,
it can be configured as open-drain output or pull-up
output,
please refer to parameter setting par.
An external 1k protective
resistor shall be connected in series while using
(
can be floated)
17
TXD
Output
TTL serial port output connecting to external RXD input pin.
It can be
configured as open-drain or push-pull input
, please refer to Parameter setting.
An external 1k protective resistor shall be connected in series when in use.
18
TCKC
Input
JTAG TCKC
19
TMSC
Input
JTAG TMSC
20
RXD
Input
TTL serial port input connecting to external TXD pin.
It can be configured as
open-drain or high pull input
, please refer to Parameter setting.
An external 1k
protective resistor shall be connected in series when in use.
21
M1
Input
M2, M1, M0 jointly decide the 8 working modes;
An external 1k protective resistor shall be connected in series and a 1M
pull-up resistor shall be added when in use.
(Cannot be floated, it can be grounded when not used)
22
M0
Input
M2, M1, M0 jointly decide the 8 working modes;
An external 1k protective resistor shall be connected in series and a 1M
pull-up resistor shall be added when in use.
(Cannot be floated, it can be grounded when not used)
23
GND
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
