| ??? 03/31/06 05:10 Modified: 03/31/06 05:50 Read: times |
#113454 - Poor Appnotes from Philips. Responding to: ???'s previous message |
Dear Kai, Erik, Neil & Richard,
Thanks for your replies, Using the hardware and software given in this philips Appnote will surely lead to troubles. There are other software bugs illogical software bugs too in the C listing given. For example in Rows setting function. It seems they didnt test software and hardware they recommend. Quite a large percentage of Appnotes from philips in LPC9xx section are really misleading and lead to poor design practices among developers. For example 1. They recommend using an LED to generate 3.3V supply from 5V in their "Usin LPC in 5V Enviournment". 2. They connect live mains 230V AC supply directly to LPC micro with only a resistor in between, in "Triac and LPC easily connected appnote. 3. They use keypads without considering required contact current and ignoring possibility of two push pull ports getting shorted. Thanks & Regards, Prahlad Purohit |
| Topic | Author | Date |
| Pullups for reading marrix keypads. | 01/01/70 00:00 | |
| it's a LPC | 01/01/70 00:00 | |
| LPC modes. | 01/01/70 00:00 | |
| Excellent point, I have, however, not ha | 01/01/70 00:00 | |
| No problems != No Bugs. | 01/01/70 00:00 | |
| believinf the data sheet | 01/01/70 00:00 | |
| Dry Contact is not a condition. | 01/01/70 00:00 | |
| Interface Physics | 01/01/70 00:00 | |
| Brilliant analysis | 01/01/70 00:00 | |
| 5µm is better than 1µm | 01/01/70 00:00 | |
| What a shit! | 01/01/70 00:00 | |
| Maybe ... | 01/01/70 00:00 | |
| Maybe ... | 01/01/70 00:00 | |
| Poor Appnotes from Philips. | 01/01/70 00:00 | |
true, but not quite | 01/01/70 00:00 |