IWRL6432: System topology

Gayathri B

Part Number: IWRL6432

Sorry for the late reply

Please verify page number 20 on IWRL6432 datasheet.

There are two types of system topologies in that peripheral topology, PIR sensor mentioned as optional. Why PIR sensor is mentioned ? Because we are using RADAR sensor instead of PIR. Then what is the purpose of

PIR there?

over 2 years ago

+1 Tim Henderson over 2 years ago

TI__Expert 8802 points

Hi,

One of the reasons is to save on power consumption. For example. A design may have a PIR sensor to check for motion detection, and when it senses motion, the MCU will wake up the IWRL6432 device and have it perform something such as people tracking/counting.

This is why it is optional. The IWRL6432 could be running people tracking/counting 24/7, but if you include the PIR sensor in this way, you only need to have the Radar sensor up and running when motion is detected.

Regards,

Tim

0 Gayathri B over 2 years ago in reply to Tim Henderson

Prodigy 80 points

Thank you

0 Gayathri B over 2 years ago in reply to Tim Henderson

Prodigy 80 points

Do you have any documents for low power operating methods or modes?

please share me

0 Gayathri B over 2 years ago in reply to Tim Henderson

Prodigy 80 points

Hi sir,

One more doubt please, In IWRL6432, as per the IWRL6432 BOOST schematic VIOIN pins are 3.3V supply, but as per the IWRL6432 datasheet we can give 1.8V supply to VIOIN pins. If I give 1.8V supply to VIOIN pin, Do I need to follow any considerations? or Do I need to add some components there in hardware point of view ?

0 Tim Henderson over 2 years ago in reply to Gayathri B

TI__Expert 8802 points

Hi,

I am forwarding this question to the appropriate person on our team. Please allow them some time to respond.

Regards,

Tim

+1 Ankit Mohanty over 2 years ago in reply to Tim Henderson

TI__Genius 9630 points

Hi Gayathri,

It is recommended to have a 3.3V supply to VIOIN pins. The VIOIN can be given 3.3V or 1.8V supply depending on if you are operating on 3 rail or 2 rail Power Optimized topology respectively. If you are operating on 2 rail Power Optimized topology (1.8V supply to VIOIN) all the Digital CMOS I/Os will operate on this supply.

0 Gayathri B over 2 years ago in reply to Ankit Mohanty

Prodigy 80 points

Thank you

Sensors

Sensors forum

IWRL6432: System topology