RF-Star RF-43UP - Function; Figure 10. en Timing Diagram of Wake-Up Sleep MCU; Figure 11. en Timing Diagram During Sending Data

RF-43UP
www.szrfstar.com V1.3 - Jan., 2020
Shenzhen RF-star Technology Co., Ltd. Page 20 of 34
6.5 EN Function
EN is used for wireless transceiver buffer indication and self-check indication. It indicates 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 module is in the process of initial self-check.
1. Wake-up MCU
Figure 10. EN Timing Diagram of Wake-up Sleep MCU
2. Send indication
Figure 11. EN Timing Diagram during Sending Data
3. Receive indication