Bluetooth Commands - wless.ru

Appendix D – Class 1 Module Power Consumption
Appendix D – Class 1 Module Power
Consumption
Idle Mode ≈ 1.4mA average
Deep Sleep Mode ≈ 25-50uA (Idle Mode)
• If in Sniff Mode, will go momentarily as low as 50uA in between processes.
Slave Unconnected ≈ 39mA average
• ATSW21,4096,18,4096,18 settings will result in the Slave not connected ≈ 1mA average.
• ATSW21,4096,18,4096,18 settings along with enabling Deep Sleep Mode will result in an unconnected
slave current draw of ≈ 350uA average.
Master Unconnected ≈ 1.4mA average
• A Master device not in use – it is better to just turn off the power completely to the device and draw zero
current.
Master Inquiry ≈ 60mA average
• For the first couple of seconds before it connects to the Slave
Connected ≈ 5mA average
• ATSNIFF,1600,160,10,160 will result in the Slave connected ≈ 1.4mA average, with no data being sent.
• This can even go as low as 0.6mA if you make the Slave not discoverable but connectable.
If you perform a remote Bluetooth RF “ATDH” disconnect command from any Master to the Slave, the Slave
will go into idle mode. You will have to either send a command to the Slave through its local UART or cycle
power on the device to have it come back up in Slave mode. This was designed as if you were
communicating to the local UART on the Slave device. Typically, a Slave never sends a disconnect
command; only the Master does. In this mode, you can devise some clever power-saving features such as
leaving the Slave in idle mode until another event triggers the device to go back into Slave discoverable
mode. t is important to remember that a device in Idle Mode is not discoverable; this has some security
advantages. The same benefits can be achieved by simply controlling when the device is turned off/on again.
Multi-Tech Systems, Inc. SocketWireless Bluetooth AT Commands (S000360G) 82