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Related Manuals for Semtech E28-2G4T27SX
Summary of Contents for Semtech E28-2G4T27SX
- Page 1 User Manual E28-2G4T27SX...
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Page 2: Table Of Contents
E28-2G4T27SX User Manual Contents Contents ····················································································································································································································································1 1.Product Overview ....................................2 1.1 Brief Introduction ..................................2 1.3 Application ..................................... 2 2. Technical Parameters ..................................2 2.1 Limit parameter ..................................... 2 2.2 Operating parameter ..................................3 3. Mechanical Characteristics ................................4 3.1. Dimension Plan .................................... 4 3.2. -
Page 3: Product Overview
1.Product Overview 1.1 Brief Introduction E28-2G4T27SX is an UART module based on SEMTECH SX1281, it adopts transparent transmission and works at 2.4GHz band. It adopts FSK modulations. It features SMD packing compatible with 3.3V and 5V IO port voltage. 1.2 Features ... -
Page 4: Operating Parameter
E28-2G4T27SX User Manual Voltage over 5.5V will cause permanent damage to Voltage supply [V] module Chances of burn is slim when modules are used in Blocking power [dBm] short distance Operating temperature [℃] 2.2 Operating parameter Performance Main parameter Note ≥5.0V ensures output power... -
Page 5: Mechanical Characteristics
E28-2G4T27SX User Manual 3. Mechanical Characteristics 3.1. Dimension Plan... -
Page 6: Pin Definition
E28-2G4T27SX User Manual 3.2. Pin Definition Pin No. Pin Name Pin Direction Function Ground Ground cannot be floated, can be grounded if not used cannot be floated, can be grounded if not used cannot be floated, can be grounded if not used... -
Page 7: Recommended Connection Diagram
E28-2G4T27SX User Manual 4. Recommended Connection Diagram Brief description for module-MCU connection (STM8L MCU as example) The wireless UART module adopts TTL level, please connect to MCU with TTL level. For some 5V MCU, 4~10K pull-up resistor may need to be added at the TXD and AUX pins of the module. -
Page 8: Aux Description
E28-2G4T27SX User Manual 5.4. AUX Description AUX Pin can be used as indication for wireless send & receive buffer and self-check. It can indicate whether there is data that is yet to send via wireless or whether all wireless data has been sent through UART, or whether the module is still in the process of self-check initialization. -
Page 9: Operation Modes
E28-2G4T27SX User Manual The module outputs RSSI value through serial port 1 - RSSI Mode Serial port on, RF on, RSSI on every 100ms 2 – Ranging Mode Reserved Serial port on ， RF off, parameter 3 - Configuration Baud rate is fixed as 9600 8N1... -
Page 10: Configuration Mode (Mode 3)
E28-2G4T27SX User Manual 6.5. (Mode 3) Configuration mode Under this mode, Baud rate is fixed as 9600 8N1... -
Page 11: Command Format
E28-2G4T27SX User Manual 7. Command Format Under configuration mode (Mode 3:M0=1, M1=1, M2 =1), the supported parameters are as below (Only support 9600 and 8N1 format when setting) Command Description Format C0 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must be sent in C0 + working succession. -
Page 12: Reset Command
E28-2G4T27SX User Manual 7.4. Reset Command Command Format Description Under configuration mode (M0=0, M1=1, M2 =0), send command (HEX format) to the serial: C4 C4 C4, the module will conduct a reset; C4+C4+C4 During reset, the module will conduct self-check, AUX outputs low level, when reset is completed, AUX outputs high level, the module starts to work normally. - Page 13 E28-2G4T27SX User Manual Communication Channel Normal mode: when air data rate is 100k, the formula to calculate channel is: 2402 + CHAN * 2MHz Continuous transmission mode: When baud rate is 1200, 9600 or Default: 0x18 CHAN 9200, the formula to calculate channel is: 2402 + CHAN *2MHz；...
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Page 14: Hardware Design
E28-2G4T27SX User Manual Hardware design It is recommended to use a DC stabilized power supply. The power supply ripple factor is as small as possible, and the module needs to be reliably grounded.； Please pay attention to the correct connection of the positive and negative poles of the power supply. -
Page 15: Faq
E28-2G4T27SX User Manual 9. FAQ 9.1 Communication range is too short The communication distance will be affected when obstacle exists. Data lose rate will be affected by temperature, humidity and co-channel interference. The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground. -
Page 16: Production Guidance
E28-2G4T27SX User Manual 10. Production Guidance 10.1 Reflow soldering temperature Profile Feature Curve characteristics Sn-Pb Assembly Pb-Free Assembly Solder Paste Solder Paste Sn63/Pb37 Sn96.5/Ag3/Cu0.5 Preheat Temperature min （Tsmin） 100℃ 150℃ Min preheating temp. 150℃ 200℃ Preheat temperature max (Tsmax) Max preheating temp. -
Page 17: Package For Batch Order
E28-2G4T27SX User Manual 11. Package for batch order Revision history Version Date Description Operator 2020-8-19 Initial Version... - Page 18 E28-2G4T27SX User Manual FCC Statement 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 19 E28-2G4T27SX User Manual The modular transmitter has been fully tested by the module grantee on the required number of channels,modulation types, and modes, it should not be necessary for the host installer to re-test all the available transmitter modes or settings. It is recommended that the host product manufacturer, installing the modular transmitter,perform some investigative measurements to confirm that the resulting composite system does not exceed the spurious emissions limits or band edge limits (e.g., where a different antenna may be causing additional...