| ??? 03/07/06 13:31 Read: times |
#111502 - that would be a stupid chip design Responding to: ???'s previous message |
I don´t think you can "write" (burn?) the signature bits, but i don´t have any other explanation.
Perhaps i´ll buy another and do the same, it would be self explanatory. that would be a stupid chip design if the signature was writeable. BUT I can see some "smart" designer making it so to allow chips that do not pass certain tests to be identified as some other derivative where the range of test is less. an example: for an error writing some byte in the 2-4k range identify the chip as a max 2k variant Erik It would be interesting if someone could identify the ID that you are actually reading as such a derivative. |
| Topic | Author | Date |
| AT89S52 signature | 01/01/70 00:00 | |
| Throw away... | 01/01/70 00:00 | |
| naah | 01/01/70 00:00 | |
| worse programmer? | 01/01/70 00:00 | |
| different messages, nothing else | 01/01/70 00:00 | |
| the original problem | 01/01/70 00:00 | |
| i tried to explain the whole situatuion | 01/01/70 00:00 | |
| do you have an oscilloscope? | 01/01/70 00:00 | |
| that would be a stupid chip design | 01/01/70 00:00 | |
Make that sense? | 01/01/70 00:00 | |
| Is it you, Erik Malund? | 01/01/70 00:00 | |
| it seems possible | 01/01/70 00:00 | |
| Why not using a fresh ZIF? | 01/01/70 00:00 | |
| the generation using these micros use so | 01/01/70 00:00 | |
| Sockets, or how I lost the precision... | 01/01/70 00:00 |