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l Introduce

RF-TTL-SMA is our latest 100mW wireless transmission module. It working in 425-450.5MHz band and using serial port to send or receive data.

Its advantage is that centralized power density, transmission distance(Its transmission distances can reach 2000 meters.) and strong anti-jamming

capability.

Especially the ability to penetrate diffraction, it is more strong than other band.

RF-TTL-SMA having the FEC forward error correction algorithm, the coding efficiency is higher and the error correction capability is strong. When in the

case of burst interference,

it can take the initiative to correct the interference packets , that greatly improving the reliability and transmission distance. The module also having

data encryption and compression function.

When transmission data in the air, it is random and unsafe. But after the module rigorous encryption and decryption algorithm, the data interception

becomes meaningless and improves transport security.

The module has four operating modes , and can freely switch at runtime , in the power saving mode , current consumption is only ten of uA, it is very suitable for ultra-low- power applications.

1. Power Requirements

The supply voltage of RF-TTL-SMA is 1.9V-3.6V DC, and the current supply capability of the power supply is not less than 200MA. When the module transmitting data, due to the current mutation lead to a greater supply ripple. So users must have an external circuit ripple rejection.

You must pay more attention on using low quiescent current and low dropout LDO, because common LDO ripple rejection is poor. When you use the ordinary linear regulator, or a larger quiescent current regulator, or DCDC DC converter , the situation will be much more optimistic .

The power supply is a prerequisite for good quality wireless module stability and effectively enhance the transmission distance, receiver sensitivity , and life.

2. Module Reset

After the module is powered, AUX will immediately output low, begin the hardware self-test and work in accordance with the user parameter settings. In this process, the AUX keep low. After, AUX out high and work in accordance with predetermined operating mode. So users need to wait AUX rising edge, working as a starting point of the module.

3. AUX Detail introduction

AUX is used for wireless transmission indication and output indicator. It indicates whether the data has not been emitted by wireless from the module, or the wireless data has been received.

In the following case, if they meet any one condition, the AUX will output low:

1. User via a serial port to send data to the module , and it has not completely written to the wireless chip.

2. Wireless module received data, and it has not completely send to user.

3. In the process of resetting the module has not yet completed the self-test , or has not been initialized.

When the following conditions are met, the AUX output low:

All user data have been written to the wireless chip and have started launching. At the same time, the module dose not receive wireless data, and need not output serial data to the user

l Parametric Description

Num

Parametric Name

Detailed Description

Main chip

SI4463-B1B

Module size

20* 36mm

Interface

1*7*2.54mm, you can use the universal plate and DuPont line

Supply voltage

1.9-3.6V DC

Communication voltage

0.7VDD-5.2VDC, VDD is the supply voltage of module

Measured distance

2000m@1K

Maximum power

20dbm

Air Rate

8 adjustable rating

Dormancy Current

About 1.7uA（M1 =1， M0 = 1）

Power Level

8 adjustable rating

Transmitting current

89mA@100mW output

Receiving current

14.5mA@Mode 0 and 1. The lowest is about 20uA@Mode 2 + 2s

wake up

Antenna

SMA external antenna

Communication Interface

UART serial port, 8N1/8E1/8O1, from 1200 to 115200 a total of 8 kinds baud rate

Transmitting length

Figure 1

Single data packet is 256 bytes

Receiving length

Single data packet is 256 bytes

RSSI Support

Built-in intelligent processing

Reception sensitivity

-119dbm@1Kbps

Work temperature

-30 - +85℃

Work humidity

Relative humidity :10% - 90%

Storage temperature

-40 - +125℃

Working frequency

425MHz – 450.5MHZ, 100KHz stepper

2. Module Features

l Transmission distance of 2000 meters

l Multiple baud

l -119dBm Receiver sensitivity

l Ultra-low -power receive

l Four operation modes

l Sleep current is only 1.7uA

l Air wake-up function

l Double ring buffer 256Bytes

l Built-in watchdog , never crash

l Software FEC correction , data compression

l Support voltage reading function

l Frequency 425 - 450.5M, 256 channels

l Efficient encryption algorithms , error correction function

3. Application

l Wireless meter reading

l Wireless Sensor

l Smart Home

l Intelligent Robot

l Consumer Electronics

l Street lighting control

l High-voltage monitoring

l Environmental Engineering

l Automated data collection

l Remote control and monitoring

l Other wireless transmission applications

1. Module pins and dimensions

Pin Num	Pin Name	Pin Direction	Application
1	M0	Input( Very weak pullup)	Match with M1, select 4 operating modes of the module. Do not leave
2	M1	Input( Very weak pullup)	Match with M0, select 4 operating modes of the module. Do not leave
3	RXD	Input	TTL serial input and it connected to an external TXD out pin
4	TXD	Output	TTL serial output and it connected to an external RXD out pin
5	AUX	Output	Used to indicate the status of the module
6	VDD		Power provide, must be between 2.0 to 3.6 DC(Unit: V)
7	GND		Ground

Attention:

1. 1 and 2 above functions, output low priority , it is namely : to meet any one of the output low condition , AUX outputs low. When all the low-level conditions are not satisfied , AUX output high.

2. When the AUX output low , indicating that the module is busy at this time does not work mode detection .

3. When the user to switch to a new operation mode, at least 2ms after the rising edge of the AUX, the module will truly enter this mode.

4. Users enter from SLEEP mode to the normal operating mode , or in the reset process , the module will re-set user parameters. And in the configuration process , the AUX will output low.

1. Working Mode

Working mode	M1	M0	Introduction	Remark
0 General mode	0	0	Serial open and wireless open , transparent transmission	The receiver must be modes 0,1
1 Weak-up mode	0	1	Serial open and wireless open	The receiver can be mode 0,1,2
2 Power-saving mode	1	0	Serial reception closed , wireless wake-up mode	Transmitter must be mode 1
3 Sleep mode	1	1	Module into hibernation , and it can receive parameter setting command

For more details.just contact us...

Package:

2PCS RF module

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Shipping & Handling

We Ship to Worldwide, but some countries will take long delivery time.

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Ship to worldwide by china air post service or Singapore post air mail within 12-24 hours after payment completed received,

Pls.contact me for the the tracking number if you need it.

We advise shipping by DHL or EMS, and we have given a discount for you, you can receive it in 7-15 business days.

It takes about 15-45days usually if shipping by Singapore post air mail.

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