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CC2541: CC2541 Flash Corruption

Part Number: CC2541

Dear Expert,

           When we use oscilloscope probe or Multimeter probe or human hands to touch 32MHz crystal 2 connection points like below.

(we use 2 kinds of crystals.one is 2 pin. another one is 4 pin).

My CC2541 device immediately stopped work.Then my CC2541 device flash corrupt after power on again at high probability.

It can not use unless reprogram it agian. We found that if we use 4 pin crystal, the flash corruption problem is less,but still have such problems.

Do you have any suggested precautions on hardware and software ?

  • Touching one of the xtal terminals will cause  that the load increases and the xtal stops swinging since he requirements for further oscillation is no longer in place. Is the clock stops when accessing the flash (typically a write) this could typically cause flash corruption. 

    But is this a issue since a user should not have access to touch nodes on the PCB.