LPC54xxx deep sleep power consumption too high

cancel
Showing results for 
Search instead for 
Did you mean: 

LPC54xxx deep sleep power consumption too high

2,446 Views
terence_kong
Contributor II

Dear NXP,

we are currently trying to verify the power consumption of the LPC54606 and are seeing something not quite in line with the datasheets.

 

At 1.85V supply

  • Measured deep sleep ~ 200uA (should 23uA according to the spec)

We need to further reduce the power consumption.

Seems internal flash memory is in standby mode when deep sleep.  Wondering how to power down the internal flash memory to further reduce the power consumption? Or other suggestion?

Labels (1)
0 Kudos
1 Reply

1,844 Views
FelipeGarcia
NXP TechSupport
NXP TechSupport

Hi Terence,

 

Please check the measurements for deep-sleep mode.

 

pastedImage_1.png

Please keep in mind that typical ratings are not guaranteed.

 

In addition, please check the following recommendations that were used in the measurements from the datasheet.

 

• Configure all pins as GPIO with pull-up resistor disabled in the IOCON block.

• Configure GPIO pins as outputs using the GPIO DIR register.

• Write 1 to the GPIO CLR register to drive the outputs LOW.

• All peripherals disabled.

 

Datasheet: https://www.nxp.com/docs/en/data-sheet/LPC546XX.pdf

 

Best regards,
Felipe

-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!

- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------