NRF24LE1 qfn24 deep sleep current too high

[subver]

Hi. I've encountered a problem with some of my nrf24le1 chip (near every 5th piece) - current in deep sleep mode is very high (30-80 uA), if i change it to another chip, then current is normal (less than 1 uA). I've noticed, that if i erase InfoPage, current in deep sleep mode is normal(less than 1uA), but wake up on pin function not working, so restoring infopage make wake up function work, but current again is too high. I have tried about 100 pcs of nrf24le1, and about 20 of them have such problem. Any ideas?

[Hung Bui]

Hi Subver,

Could you post the code you used for testing ? Erasing Infopage is not something we recommend as it contains calibration data stored in production and varied between chips.

[uldara]

i have the sample problem with power consumption 600 - 700 uA

do you have any idea ?

#include <reg24le1.h>

#include <stdint.h>

#include <stdbool.h>

#include "hal_delay.h"

#define LED P13       // LED output

#define RSW P14 .   // Button wake up

void main()

{

    P1DIR  = 0x10;

    LED = 0;   

    OPMCON = 0x00; 

    OPMCON = 0x00; // Open latch

while(1)

{

  if(PWRDWN & 0x80) {   PWRDWN = 0; }

              WUOPC1 = 0x10;      // Wake up on Pin P14

if(P14 == 1)

{

  LED = 1;

 delay_ms(200);

  LED = 0;

OPMCON = 0x06;

 PWRDWN = 0x01;

}

else

     {

         LED = 1; delay_ms(200);  LED = 0;

        OPMCON = 0x02;

         PWRDWN = 0x01;

     }

  }

}

 

[Hung Bui]

Make sure you don't flash the chip with debug mode. If you just leave your code with 

while(1){ PWRDWN = 0x01;} what current do you have ? 

[uldara]

i don't know how to disable debug mode. could you show me ?

[ovrebekk]

Hi

How to enable/disable debug mode is described in figure 16 on page 15 of the Keil C51 Appnote. 

If you are new to development for the nRF24LE1 you might want to read through the whole appnote, it has a lot of helpful information. 

Best regards
Torbjørn