| ??? 08/08/09 17:00 Modified: 08/08/09 17:07 Read: times |
#168261 - Vice versa! Responding to: ???'s previous message |
Joe said:
My interpretation of these parameters are
The Vdd of the P89LPC935 should rise faster than 2 mV/µs and fall faster than 50 mV/µs. No, vice versa! It has to do with the brownout detection section. Every brownout detector has a finite speed... Look at the Vdd rise with a scope. Set the horizontal deflection to 1msec and the vertical deflection to 1V. Imagine a straight line on the scope with a slope of 2V/msec. Then, at no point the Vdd rise curve must be steeper than this slope. Analog with Vdd fall. Kai |
| Topic | Author | Date |
| LPC764 Oscillator problems | 01/01/70 00:00 | |
| it is a known fact that .... | 01/01/70 00:00 | |
| Well known... | 01/01/70 00:00 | |
| See also here... | 01/01/70 00:00 | |
| one added comment | 01/01/70 00:00 | |
| LPC764 Vdd rise time | 01/01/70 00:00 | |
| Vice versa! | 01/01/70 00:00 | |
| Vdd rise time LPC935 | 01/01/70 00:00 | |
That's what the datasheet tells... | 01/01/70 00:00 |