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Microchip
Forum Crystal oscillator for PIC16LC622
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Forum Thread Details
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Crystal oscillator for PIC16LC622

Former Member
Former Member over 16 years ago

Bonjour,

Nous avons un produit sur lequel nous utilisons un pic16LC622A-04ISS , et nous avons réalisé plus de 20K pièces sans aucun problème. Depuis quelque temps, nous utilisons un PIC16LC622-04ISS avec les mêmes composants périphériques et maintenant nous avons des problèmes de retard pour le démarrage de l'horloge. Nous utilisons un quartz de 32,768 kHz et nous avons besoin d'un démarrage rapide de l'horloge. En utilisant les PIC16LC622-04ISS, la consommation de notre application a chuté de 100μA à 50μA.

J'ai relevé les date codes des PIC: avec le date code 06045-KO le fonctionnement est correct, avec le date code 07513-7E le fonctonnement est aléatoire.

Nous avons fait divers essais mais sans nette amélioration, avez vous une solution sachant que notre courant max ne doit pas dépasser 120µA.

La configuration est : __CONFIG _LP_OSC

 

 

 

Ci-joint le schéma utilisé dans notre application.

Merci pour votre aide

Attachments:
imageoscillator.pdf
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  • Former Member
    0 Former Member over 16 years ago

    Hi , let me check this out with my tech support teams , please also take a look at the attached guides on Osc design - it may help ?

     

    Mike

    Attachments:
    image00943A.pdf
    image00949a.pdf
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  • Former Member
    0 Former Member over 16 years ago

    Hi , here 's our Tech guys response ( attached ) , I hope it helps .

     

    Mike

    Attachments:
    Problem Resolution.zip
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  • Former Member
    0 Former Member over 16 years ago in reply to Former Member

    Hi,

    I can't open your zip file, please can you send me again (no file to extract!)

    Christian

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  • Former Member
    0 Former Member over 16 years ago in reply to Former Member

    Hopfully this will work ?

     

    Mike

    Attachments:
    problem_res.zip
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  • Former Member
    0 Former Member over 16 years ago in reply to Former Member

    Sorry but it's the same, I can't extracting !!

    Christian

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  • Former Member
    0 Former Member over 16 years ago in reply to Former Member

    Hi send me your email address and I'll mail you the word doc , Mike

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  • Former Member
    0 Former Member over 16 years ago in reply to Former Member

    try this , Mike

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  • awinning
    0 awinning over 16 years ago in reply to Former Member

    Mike,

     

    You could upload the doc as a document in the Microchip group and then link it here


    Ally

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  • Former Member
    0 Former Member over 16 years ago in reply to Former Member

    Hi,

    I don't found the links on your email! (see attached file)

    My email adresse for the document or for the link: christian.glon@free.fr

    Christian

    Attachments:
    image
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