Recommended Connection Diagram; Functional Description; Fixed Transmission; Broadcast - Semtech E28-2G4T27SX User Manual

4. Recommended Connection Diagram

No.
1 The wireless UART module adopts TTL level, please connect to MCU with TTL level.
2 For some 5V MCU, 4~10K pull-up resistor may need to be added at the TXD and AUX pins of the module.

5. Functional Description

5.1. Broadcast Address


i.e.: set the address of module A as 0xFFFF or 0x0000 and channel as 0x04.

When set A as transmitter (same mode, transparent transmission on), all modules with channel 0x04 will receive broadcast
data.

5.2. Monitor Address


i.,e.: set the address of module A as 0xFFFF or 0x0000 and channel as 0x04.

When set A as receiver, it will receive the data transmitted by modules with channel 0x04.

5.3. Module Reset


When the module is powered on, the AUX output will go to a low level immediately, the module conducts hardware
self-check and sets the operating mode on the basis of the user parameters (M0 M1). During the process, the AUX level
remains low. After the process completed, the AUX outputs high a level and starts to work as per the operating mode
indicated by the combined state of M1 and M0. The user needs to wait until the AUX rising edge is high, indicating the
module is ready for normal work.
.
Brief description for module-MCU connection (STM8L MCU as example)
E28-2G4T27SX User Manual
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