| ??? 02/21/07 14:00 Read: times |
#133420 - It runs on AT89C51 and P89C51 Responding to: ???'s previous message |
Thank you for your quick answer.
On our board,we have put a monostable after reset who let EA pin returns up after 500ms. With this hardware, when you call FFF0 you jump to the boot ROM instead of external. It runs correctly. I think that it is because EA pin is latched (It's explained in the Philips datasheet) |
| Topic | Author | Date |
| 89v51 IAP using ext code PROM | 01/01/70 00:00 | |
| No | 01/01/70 00:00 | |
| how do you do that? | 01/01/70 00:00 | |
| It runs on AT89C51 and P89C51 | 01/01/70 00:00 | |
| Internal IAP with external code | 01/01/70 00:00 | |
ah so... | 01/01/70 00:00 |