??? 07/16/05 07:18 Read: times |
#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. |
Topic | Author | Date |
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 |