Specifications

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FL22-C8

LoRa 868/915MHz SPI Passive crystal standard modules

The FL22-C8 is a new generation of LORA spread spectrum RF transceiver module from Lierda Technology

Group, with smaller size, lower power consumption and higher transmitting power. Based on SEMTECH's RF

integrated chip LLCC68 development block. It is a high-performance IoT wireless transceiver, and its special LoRa

debugging method can greatly increase the communication distance, which can be widely used in various

occasions in the field of short-range IoT wireless communication. It has the characteristics of small size, low power

consumption, long transmission distance and strong anti-interference ability, etc. A variety of antenna solutions

are available according to the actual application, and the module is not equipped with a micro-control chip, which

is mainly used for secondary development by customers.

Product features

· Operating frequency band

- Operating frequency band 860-930MHz

（

902.3-924.9MHZ for FCC application）

· Multiple modulation options

- Supports LoRa,GFSK, FSK and other

modulation methods

· Ultra-low power consumption

- Supports 1.8V to 3.7V power supply (transmit

power at +18dBm configuration, must not fall

below 3.1V)

- Transmit current ≤ 125mA (maximum transmit

power configuration)

- Receive current ≤ 6.5mA (DC-DC mode)

- 600uA standby current

- 600nA sleep current (register value saved)

· High Link Budget

- Sensitivity -124dBm±1dBm (SF=7,

BW_L=125KHz)

- Transmit power Max. 18 dBm

· Size

- 18.4*18.4*3.0mm

· Ultra-long transmission range

- 6Km@250bps (urban environment, LoRa

modulation, maximum transmitting power)

· High confidentiality

- Using LoRa modulation, which cannot be

captured and parsed by conventional wireless

devices

· Communication interface

- SPI communication interface, can be directly

connected to various microcontrollers, software

programming is very convenient

Applicable scenarios

-Automated Building Circulation System

-Smart Home

-Temperature and humidity sensors

-Wireless remote control, drones

-For applications requiring high communication

distance

Summary of content (10 pages)

PAGE 1
FL22-C8 LoRa 868/915MHz SPI Passive crystal standard modules The FL22-C8 is a new generation of LORA spread spectrum RF transceiver module from Lierda Technology Group, with smaller size, lower power consumption and higher transmitting power. Based on SEMTECH's RF integrated chip LLCC68 development block.
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Lierda provides this document to support its customers in the design of their products. Customers are required to design their products in accordance with the specifications and parameters provided in the document. The company is not responsible for any personal injury or property damage caused by improper handling by the customer. Lierda reserves the right to update this document without prior notice.
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Operating voltage (V) Operating temperature (°C) Initial frequency offset (KHz) Operating Frequency Band (MHz) Emission status 1.8 3.3 3.7 -40 - 85 -11 - +11 930 860 902.3-924.9MHz for FCC application 90 110 125 - 50 60 (mA) DC-DC Mode，18dBm transmit DC-DC Mode，EU868，max14dBm transmit Receiving Power status consumption - 5.5 6.5 - 0.6 2 17 18 - - -124 - - - 62.
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Table 1-3 PA operating mode optimisation settings I Output power (dBm) 18 paDutyCycle hpMax deviceSel paLut Value in SetTxParams 0x04 0x07 0x00 0x01 22 Note: For example, 915MHz, maximum 18dBm power, when using, you can go to the configuration to change the SetTxParams parameter value size to change the actual output power size, the maximum value is 22.
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P2 P3 P4 DIO1 Interrupt source mapping pins (see LLCC68 datasheet for details) DIO2 Interrupt source mapping pins (see LLCC68 datasheet for details) BUSY SW_CTL2 Line Occupancy Indicator RF switch control pin 2,TX：SW_CTL1=0，SW_CTL2=1 P5 RX：SW_CTL1=1，SW_CTL2=0 Sleep：SW_CTL1=0，SW_CTL2=0 SW_CTL1 RF switch control pin 1，TX：SW_CTL1=0，SW_CTL2=1 P6 RX：SW_CTL1=1，SW_CTL2=0 Sleep：SW_CTL1=0，SW_CTL2=0 3 P7 GND Power ground P8 VCC Power supply VCC P9 MISO SPI data output P10 MOSI SPI data input
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BW 2 PL 125kHz 5 6 7 8 9 10 11 12 255 bytes（136ms） SF 255 bytes（229ms） 255 bytes（394ms） 255 bytes（696ms） 255 bytes（1250ms） Not supported Not supported Not supported 3.2 Hardware layout considerations 1. 1. DIO port as far as possible to connect to the MCU with external interrupt IO port. 2. 2. The RF exit to the antenna pad part of the alignment as short as possible, to go 50Ω impedance line, and need to wrap the ground, the alignment around the more perforated. 3. 3.
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transmission abnormality. ·Antenna soldering abnormality RF signal is not reaching the antenna or π circuit is soldered incorrectly. 4.2 Module power consumption anomaly ·The module is damaged due to static electricity, etc., resulting in abnormal power consumption. ·hen doing low-power reception, incorrect timing configuration etc. leads to module power consumption does not achieve the expected effect.
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Caution Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.
PAGE 9
OEM Guidance 1. Applicable FCC rules This device complies with part 15.247 of the FCC Rules. 2. The specific operational use conditions This module can be used in IoT devices. The input voltage to the module is nominally 3.3 V DC. The operational ambient temperature of the module is -40 °C ~ 85 °C. the external antenna is allowed, such as dipole antenna. 3. Limited module procedures N/A 4. Trace antenna design N/A 5.
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The host integrator installing this module into their product must ensure that the final composite product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operation and should refer to guidance in KDB 996369. For host products with certified modular transmitter, the frequency range of investigation of the composite system is specified by rule in Sections 15.