Posteado por: Pablo | marzo 27, 2010

Sleep and Wake up on MRF24J40MA


This radio module has the feature of low consumption operation mode, where it will consume typically 2uA (page 1 of the datasheet).

Set in the Immediately wake-up mode I had problems to have a successful reception. I was doing the same steps the datasheet suggests in the page 121:

  • Set High the pin WAKE.
  • Wait at least 2ms to allow the 20MHz clock to stabilize.

I realised that is MUCH better to also reset the RF state machine, so now after delaying the 2ms, i do that reset in the suggested way, like this:

  • Write the value 0x04 in the address 0x36
  • Write the value 0x00 in the address 0x36

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