MTX-405
ASK/FSK TRANSMITTER MODULE
-Page 6-
+2.5V-16V In
+2.5V Output
+2V-16V In
DATA IN (UART) From MCU
OPT I/O - UART To MCU
OPT DATA IN From MCU
OPT DATACLK To MCU
MCU
Note 1: DATAIN for eval version
Note 2: Optional I/O or UART TXD
Note 3: Optional bit synchronizer clock
Note 4: Optional DATAIN
(1)
(2)
(3)
(4)
MTX-405, 433.92 MHz
TDI
4
TMS
5
TCK
6
GND
7
GND
8
GND
9
GND
10
GND
11
ANT
12
DATAIN
21
N/C
20
N/C
19
N/C
18
N/C
17
N/C
16
REG-EN
15
+2.5V
14
+VIN
13
RST/NMI
1
TEST
2
TDO
3
UTXD
23
URXD
24
RDY/DATACLK
22
U1
MTX-405
U1
MTX-405
Typical Application Schematic
DIP
Surface Mount
12
1
Ant
This is the transmit RF output, internally ac-
coupled. Connect this pin to the transmit
antenna.
7,8,9,10,11
2,3,4,5,6
Gnd
Ground
16,17,18,
19,20
17,18,19,20,21
N/C
No Connect
1,2,3,4,5,6   7,8,9,10,11,12
N/C
No Connect. Programming use only.
24
13
URXD    Receive data inUSART0/UART mode
23
14
UTXD    Transmit data outUSART0/UART mode
22
15
RDY/
DATACLK
Transmit buffer Ready / Alternative Data clock
21
16
DATAIN  Data input pin.
15
22
REG-EN  In a regulated module, this pin powers on the
module with a 2-16V supply input. Pulling this
pin low disables module. In a non-regulated
module, this is a no connect.
14
23
+2.5V    In a regulated module, this is a 2.5V output from
the onboard regulator when REG-EN is high (2-
16V). In a non-regulated module, this is the 2.2V
to 3.6V power supply input.
13
24
+VIN    In a regulated module, this is the power supply
pin of the module. Input 2.5-16V to power a
regulated module. In a non-regulated module,
this is a no connect.
Pin Detail
Pin Number
Pin
Name
Description
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