| ??? 01/20/07 15:35 Read: times |
#131167 - IAP and ISP P89V51 Responding to: ???'s previous message |
Hopefully you know the differences between IAP and ISP.
ISP is flash programing the device via the UART and a computer controlling the program. IAP is the micro flash programming it's own flash sectors, under micro control. P89V51 ISP On power on reset the P89V51 looks down the UART Rx for a 'U' Character for 400mS. If no 'U', the programmed code starts executing. P89V51 IAP The P89V51 has 2 flash blocks, block 0 is your programmed code and block 1 has ISP and IAP code programmed in at the factory. To access IAP commands block 1 has to be selected by manipulating a SFR... then you can make calls to the IAP.. Once finished, you manipulate the SFR to swap out block 1. Joe |
| Topic | Author | Date |
| P89V51RC IAP library | 01/01/70 00:00 | |
| P89VC51RD2BN to P89V51RD2 is not very difficult.. | 01/01/70 00:00 | |
| C51, disco | 01/01/70 00:00 | |
| IAP migration | 01/01/70 00:00 | |
| Should not be difficult.... | 01/01/70 00:00 | |
| Ok, thanks for the help. | 01/01/70 00:00 | |
| IAP and ISP P89V51 | 01/01/70 00:00 | |
| just a snippet... | 01/01/70 00:00 | |
| Thanks to all, | 01/01/70 00:00 | |
P89V Migration | 01/01/70 00:00 |