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RF-Star RF-43UH User Manual Download Page 4

                               

RF-43UH 

www.szrfstar.com

                                                                                                                                                    V1.3 - Jan., 2020 

Shenzhen RF-star Technology Co., Ltd.                                                                                                                   

Page  3  of  35

                                               

1.4 Functional Block Diagram 

 

 

 

 

 

 

 

 

 

 

Figure 1. Functional Block Diagram of RF-43UH 

1.5 Part Number Conventions 

The part numbers are of the form of RF-43UH where the fields are defined as follows:               

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2. Part Number Conventions of RF-43UH 

 

 

 

 

 

RF

 

4

 

Company Name

 

RF-STAR

 

-

 

3

 

Communication  Interface  Mode

 

UART

 

TX Power

 

+30 dBm

 

U

 

Frequency Range

 

410 MHz ~ 525 MHz

 

H

 

Package Mode

 

Half-hole Package

 

32.0 MHz

 

MCU

 

SX1278

 

SPI

 

Matc

hing

 

Matc

hing

 

Limitter

 

Half-hole 

Interface

 

IPEX 

Connector

 

DCDC Converter

 

LDO1

 

LDO2

 

LDO3

 

LDO4

 

LNA

 

PA

 

Switching

 

Low-pass 

Filter

 

Antenna 

Switch

 

Power

 

Interface

 

Summary of Contents for RF-43UH

Page 1: ...RF 43UH SX1278 433 MHz LoRa Module Version 1 3 Shenzhen RF star Technology Co Ltd Jan 19th 2020...

Page 2: ...H Half hole IPEX 25 40 3 Half hole 433 27 10 Contact Me RF 43UP SMA 24 43 Half hole 433 27 10 RF 43SH Half hole 25 40 DIP 433 27 10 Contact Me SX1276 RF 82UH Half hole IPEX 16 26 Half hole 868 915 18...

Page 3: ...wer 30 dBm 14 dBm high efficiency PA and an integrated PA Programmable bit rate up to 300 kbps High sensitivity down to 149 dBm Bullet proof front end IIP3 11 dBm Excellent blocking immunity Low RX cu...

Page 4: ...RF 43UH where the fields are defined as follows Figure 2 Part Number Conventions of RF 43UH RF 4 Company Name RF STAR 3 Communication Interface Mode UART TX Power 30 dBm U Frequency Range 410 MHz 525...

Page 5: ...on and Functions 7 2 1 Module Parameters 7 2 2 Module Pin Diagram 8 2 3 Pin Functions 8 3 Specifications 10 3 1 Recommended Operating Conditions 10 3 2 Handling Ratings 10 3 3 Current Consumption 10 4...

Page 6: ...xamples 27 8 Implementation 30 8 1 Hardware Design 30 8 2 Trouble Shooting 31 8 2 1 Unsatisfactory Transmission Distance 31 8 2 2 Vulnerable Module 31 8 2 3 High Bit Error Rate 31 8 3 Electrostatics D...

Page 7: ...ure 11 EN Timing Diagram during Sending Data 21 Figure 12 EN Timing Diagram during Receiving Data 22 Figure 13 EN Timing Diagram during Setting Data 22 Figure 14 Recommended Reflow for Lead Free Solde...

Page 8: ...ss Number 65536 default as 0 Crystal 32 MHz Package SMT Packaging Dimension 40 3 mm x 25 0 mm x 2 5 0 1 mm Antenna Half hole interface IPEX connector Operating Humidity 10 RH 90 RH no condensation Sto...

Page 9: ...Diagram of RF 43UH 2 3 Pin Functions Table 2 Pin Functions of RF 43UH Pin Name Pin Type Description 1 PB0 I O NC 2 PB1 I O NC 3 PB3 I O NC 4 3V3_MCU I O VCC Power supply pin when flash the firmware 5...

Page 10: ...n wake up Pull high when module sending data pull low after sending SWIM pin of internal MCU 11 TXD O UART RX signal 12 RXD I UART TX signal 13 S1 I Cooperate with S1 to determine the working mode Can...

Page 11: ...25 90 Human Body Model HBM class2 2000 4000 V Moisture Sensitivity Level 2 Charged Device Model Class 3 500 1000 V 3 3 Current Consumption The current consumption characteristics of this module are ca...

Page 12: ...Shenzhen RF star Technology Co Ltd Page 11 of 35 IDDT Supply current in Transmit mode with impedance matching RFOP 20 dBm on PA_BOOST 120 mA RFOP 17 dBm on PA_BOOST 87 mA RFOP 13 dBm on RFO_LF HF pin...

Page 13: ...ar com V1 3 Jan 2020 Shenzhen RF star Technology Co Ltd Page 12 of 35 4 Application and Layout 4 1 Module Photos Figure 4 Photos of RF 43UH 4 2 Recommended PCB Footprint Figure 5 Recommended PCB Footp...

Page 14: ...RF 43UH www szrfstar com V1 3 Jan 2020 Shenzhen RF star Technology Co Ltd Page 13 of 35 4 3 Schematic Diagram Figure 6 Schematic Diagram of RF 43UH...

Page 15: ...V1 3 Jan 2020 Shenzhen RF star Technology Co Ltd Page 14 of 35 4 4 Reference Design of the Connection between MCU and Module Figure 7 Reference Design of the Connection between MCU and Module Note TTL...

Page 16: ...odule to take effect Modifications in sleep mode can be used directly 5 2 Mode Switching 0 for Low Level 1 for High Level 1 Combine high and low levels of S0 and S1 to determine the working mode of th...

Page 17: ...rove system efficiency and reduce power consumption 5 3 Normal Mode Type When S0 0 and S1 0 the module works in normal mode Transmitting The single packet length of wireless data transmitted by the mo...

Page 18: ...receiving module working in the low power mode Therefore the data transmitted in the wake up mode can be received by the module in the normal mode wake up mode and low power mode Receiving Equivalent...

Page 19: ...on format details When entering other modes from sleep mode the module will re configure the parameters During the configuration EN remains low After completion the module outputs high level so it is...

Page 20: ...rent data transmission under the same channel the same module address and the same airspeed is shown in the figure below Figure 8 Transparent Transmission Function Diagram 6 2 Fixed Point Transmission...

Page 21: ...ess and destination channel Listening and broadcasting are exactly the opposite Listening is passive Set the address of the module itself to FF FF and the module can receive the data sent by all modul...

Page 22: ...tes whether any data of the module has not been transmitted through the wireless whether the wireless data has been received but has not been completely transmitted through the serial port or the modu...

Page 23: ...igh level When the EN output in at low level it means that the module is busy and the working mode detection will not be carried out at this time When the module EN output is at high level it means th...

Page 24: ...Supports normal mode wake up mode and sleep mode 3 AT_RSSI Send AT_RSSI in ASCII format the module returns AT_RSSI value hex For example AT_RSSI 2F Supports the operation in normal mode wake up mode...

Page 25: ...response If the input is correct the data just entered will be returned 7 2 2 Detailed Parameters 1 The first group of data represents the type of control command AT_SET represents the control comman...

Page 26: ...he wireless transceiver 0 0 1 2400 0 1 0 4800 0 1 1 9600 by default 1 0 0 19200 1 0 1 38400 1 1 0 57600 1 1 1 115200 bit3 bit2 bit1 means air rate bit3 bit2 bit1 Air Rate bps Description 0 0 0 0 3k Th...

Page 27: ...ng is as follows 40 is a hexadecimal representation it needed to be converted to a binary representation that is 0100 0000 bit7 indicates the transmission mode bit7 Transmission Mode Description 0 Tra...

Page 28: ...power supply ripple is less than 100 mV It is not recommended to use smaller power transmission because its power utilization efficiency is not high 0 1 27 dBm 1 0 24 dBm 1 1 20 dBm 7 2 3 Examples Ex...

Page 29: ...1 000 18 8N1 9600 2 4k 00 011 010 1A 8N1 9600 19 2k 00 011 101 1D 8N1 19200 0 3k 00 100 000 20 8N1 19200 2 4k 00 100 010 22 8N1 19200 19 2k 00 100 101 25 8N1 115200 0 3k 00 111 000 38 8N1 115200 2 4k...

Page 30: ...1 0 00 38 Transparent transmission Push pull output 250 20 0 1 000 0 00 40 Transparent transmission Push pull output 1000 20 0 1 011 0 00 58 Transparent transmission Push pull output 1500 20 0 1 101 0...

Page 31: ...he digital part of module and routed in the Bottom Layer all copper is well grounded 5 Assuming that the module is soldered or placed in the Top Layer it is also wrong to randomly route the Bottom Lay...

Page 32: ...ffect the communication distance 8 2 2 Vulnerable Module 1 Please ensure the supply voltage is between the recommended values The module will be permanently damaged if the voltage exceeds the maximum...

Page 33: ...times 2 times based on the following reflow soldering profile 4 Temperature profile Reflow soldering shall be done according to the following temperature profile 5 Peak temperature 245 Table 6 Tempera...

Page 34: ...szrfstar com V1 3 Jan 2020 Shenzhen RF star Technology Co Ltd Page 33 of 35 Figure 14 Recommended Reflow for Lead Free Solder 8 5 Optional Packaging Figure 15 Optional Packaging Mode Note Default tra...

Page 35: ...06 V1 1 Add part number conventions Aroo Wang 2019 06 05 V1 2 Add the Chapter of Application Implementation and Layout Aroo Wang 2019 06 19 V1 3 Update the description Aroo Wang 2020 01 19 V1 3 Add L...

Page 36: ...Y CO LTD Shenzhen HQ Add Room 601 Block C Skyworth Building High tech Park Nanshan District Shenzhen Guangdong China Tel 86 755 3695 3756 Chengdu Branch Add No B3 03 Building No 1 Incubation Park High...

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