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???
07/16/05 07:18
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#97473 - Scope time
Responding to: ???'s previous message
Have you checked the reset out of DS1818 with oscilloscope? What is the difference between wafeforms when LPC932 starts and when it does not start?

If you have connected external push button, does LPC932 starts with push button when it fails to start automatically?

Although DS1818 has internal 5.5K pull up resistor but you can try using 1K pull-up resistor at the reset out of DS1818.

Also decoupling capacitor very close to the chip is required.



List of 9 messages in thread
TopicAuthorDate
LPC932 at powerup            01/01/70 00:00      
   what clock?            01/01/70 00:00      
      clock            01/01/70 00:00      
   Scope time            01/01/70 00:00      
   LP2980, multiplexing            01/01/70 00:00      
      To Ijaz and Kai            01/01/70 00:00      
   Ah yes...            01/01/70 00:00      
   Maybe reset chip is unsuited?            01/01/70 00:00      
      Problem solved            01/01/70 00:00      

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