Technical information

Nonvolatile Parameter Database
2-120 AT+i Commands Reference Manual May 31, 2008
+iMRST - Turn the W24 Off
+iS102 - Define Delay after Wakeup before Sending Data
The WKUPO_N signal is an active low W24 output that is set high by default. By asserting this
signal low the host can be waked-up by W24. WKUPO_N alerts the host that W24 has data for
the host (see Figure 2-9).
When W24 has no data for the host, WKUPO_N line must be de-asserted (set high).
The S102 and S100 commands configure the W24 sleep-mode behavior.
Figure 2-9: Lines Behavior During Wakeup Event
AT+iPSE=? Returns the message "0-255" followed by I/OK.
Syntax: AT+iMRST
The command initiates a W24 turn off, which switches the W24
to Off mode.
This command emulates the ON_N signal operation for turning
the W24 off..
Result Code:
I/OK If command entered properly.
I/ERROR Otherwise.
Syntax: AT+iS102=n
Defines the delay time, in milliseconds, that W24 waits when in
SerialNET mode, after asserting the WKUPO_N signal, and
before sending data on the host interface. This delay is required to
allow the application enough time to re-activate from low power
mode and switch to normal mode.
Parameters: n=0 .. 255