| ??? 11/08/06 17:44 Read: times |
#127604 - Check the errata Responding to: ???'s previous message |
for both the 8252 and 8253. There have been a lot of changes to the part over many mask numbers. There is also an appl note on this very subject on one of those two product pages. Summary: use a good external reset/LVI and/or build some redundancy with error checking into the EEPROM code. ESP mag has some good articles on how to do it.
Shorter path is to avoid using those parts where possible. I have a lot fewer hassles with the Philips LPC parts... YMMV. GB |
| Topic | Author | Date |
| AT89S8253 EEPROM data loss | 01/01/70 00:00 | |
| Standard question #1: | 01/01/70 00:00 | |
| nonstandard question #1 & #2 | 01/01/70 00:00 | |
| Brown outs | 01/01/70 00:00 | |
| now where have I seen that... | 01/01/70 00:00 | |
| so, that is sill the case | 01/01/70 00:00 | |
| Check the errata | 01/01/70 00:00 | |
| do you remember the first 932 ? | 01/01/70 00:00 | |
| Still not able to reproduce the error | 01/01/70 00:00 | |
| If the internal POR/BOD isn't working correctly .. | 01/01/70 00:00 | |
| if that is possible | 01/01/70 00:00 | |
| External reset chip and and and | 01/01/70 00:00 | |
| i agree half the way | 01/01/70 00:00 | |
I see what you mean.. | 01/01/70 00:00 |