pic24 sleepmode power consumption

Thread Starter

jayanthik

Joined Mar 29, 2007
1
Hello guys I am using pic24hj128010 for my project which I have to use with battery so I need to reduce current!

Data sheet says we can reduce consumption upto uA during sleep mode,But in sleep mode uC consumig 1.1mA as I checked on Ammeter, I am confused and dont no where I did wrong!
But in my PCB even though i have soldered only controller and 5817 schotky diode before the controller supply.

Regards
Jayanthi
 
Last edited:

Picbuster

Joined Dec 2, 2013
990
where do you measure on the chip or on the power supply in.
please provide schematic.
It should draw no more then 50 micro amp on the power supply input.
With precaution you must be able hit the 10-30micro.
look at the tris reg status of port outputs and its load.
switch to low xtal 32khz with a wake up.
 

ErnieM

Joined Apr 24, 2011
8,011
Additionally, when is the last time you checked your ammeter?

Ever put a 5M ohm resistor to 5V and try to read how much current you see?
 

NorthGuy

Joined Jun 28, 2014
611
Every TRIS bit set (as it is by default) leaves the input floating, which means it may switch randomly thus consuming power. Therefore, unprogrammed chip may consume quite a bit.
 
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