I am using S2C in sleep mode SM = 1 (Pin Hibernate), API1. An MCU is attached to the outside, the SLEEP_RQ pin (TH pin 9) is set to Low every 30 seconds, and a packet of frame type 90 is sent from the UART.
At this time, coordinator will not receive packet unless it takes about 1 second from setting the SLEEP_RQ pin to LOW to transmitting by UART.
I would like to shorten the awake time from the viewpoint of power saving. Is there any limit to the time from Awake to UART transmission?
Please let me know, thank you in advance.