433MHz LoRa SX1278 long range RF wireless module DRF1278F for Arduino

XL1276-D01 wireless module is SEMTECH’s latest LoRaTM modulation technology wireless chip, the module in addition to the traditional GFSK modulation technology, but also uses the LoRa (remote) spread spectrum technology, with ultra-long distance spread spectrum communication, high anti-interference And minimizes current consumption. Using LoRaTM mode can achieve high -148dbm high sensitivity, and with integrated +20 dBm power output, you can achieve low-power ultra-long distance transmission, the module is suitable for any complex environment of wireless data transmission applications, such as: Table, intelligent home control, automotive electronics, security alarm, industrial monitoring and control systems, long-range agricultural irrigation control systems and other applications. The module can be easily embedded into the customer’s existing product or system design, the standard SPI interface, making communication easy and concise. Customers only in the original micro-control device to compile a simple communication protocol, you can achieve two-way communication to achieve data transmission.

Second: product characteristics

• FSK / GFKS technology, LoRa (remote) spread spectrum technology
• Half duplex communication
• Super anti-jamming (channel rejection ratio: 56db)
• High Receive Sensitivity -139dbm. (32M Passive 10ppm Crystal)
• ISM multi-band, no need to apply for frequency free use.
• Multi-frequency optional, a variety of transmission rate. Can be used in FDMA and FM technology.
• Intelligent reset, low voltage monitoring, timer wakeup, low power mode, sleep mode
• Low power consumption to accept current: 10-12mA
• 256-bit FIFO TX / RX
• RSSI channel detection function
• Transmission mode: FIFO / direct mode (recommended FIFO pack mode)
• Configuration: AFC / air wake-up function / low power consumption / carrier sense / FEC error correction / AEC encryption
• Ultra-long distance transmission open up to 5KM.
• Module size: 17 * 16.5mm

Three: product applications

1) remote control and remote data acquisition system

2) wireless meter reading (water meter, meter, gas meter)

3) wireless ordering machine, oil field, mining area, site, factory and other original 485/232 interface system

4) industrial data acquisition, transmission, intelligent control system

5) wireless alarm system

6) intelligent furniture system

7) Infant surveillance system / hospital paging system

8) wireless small data transmission system

Four: interface definition

order	definition	description	Remarks
1	GND	Signal ground
2	DIO1	Digital I / O, can be customized
3	DIO2	Digital I / O, can be customized
4	DIO3	Digital I / O, can be customized
5	VCC	power supply	3.3V (1.8 ~ 3.6V)
6	MISO	SPI data output
7	MOSI	SPI data output
8	SCK	SPI clock input
9	NSS	SPI chip select
10	DIO0	Digital I / O, can be customized	Refer to the procedure for interruption
11	REST	Reset
12	REST	Reset
13	GND	Signal ground
14	DIO4	Digital I / O, can be customized
15	DIO5	Digital I / O, can be customized
16	ANT	Antenna interface	The front end of the module External interface

Five: parameter performance

project	description	Minimum value	Typical value	The maximum value	unit
Operating Voltage		1.8	3,3	3.6	V
Operating temperature		-20	25	70	°
working frequency		410	433	525	MHZ
Transmit power		19	20	20.5	DBm
Receiving sensitivity	FSK @ 1.2K Frequency deviation 5K		-121		DBm
	Lora @ 146bps BW = 62.5KHZ SF = 12		-139		DBm
	Lora @ 293bps BW = 125KHZ SF = 12		-133		DBm