| ??? 01/11/04 16:31 Read: times |
#62349 - RE: at89c51 - crashed? Responding to: ???'s previous message |
hi,
it seems, you have not connected EA to 5V. As result, MCU fetches instructions from external program memory via P0 and P2 and so you see average voltage on their pins. Good days! |
| Topic | Author | Date |
| at89c51 - crashed? | 01/01/70 00:00 | |
| RE: at89c51 - crashed? | 01/01/70 00:00 | |
| RE: at89c51 - crashed? | 01/01/70 00:00 | |
| RE: at89c51 - crashed? | 01/01/70 00:00 | |
| RE: at89c51 - crashed? | 01/01/70 00:00 | |
| RE: at89c51 - crashed? | 01/01/70 00:00 | |
| RE: at89c51 - crashed? | 01/01/70 00:00 | |
| RE: at89c51 - crashed? | 01/01/70 00:00 | |
| RE: at89c51 - crashed? | 01/01/70 00:00 | |
RE: at89c51 - crashed? | 01/01/70 00:00 |