| ??? 09/03/07 16:58 Modified: 09/03/07 17:00 Read: times |
#143954 - Reset Circuit Responding to: ???'s previous message |
The point of the tristate buffer is to allow a reset circuit to be connected to the Reset pin at the same time. Do you have one? If you simply connected the output from the buffer to the reset pin then you will have a problem. Your circuit should be designed so that you can reset the device with or without the serial cable connected - either by pressing a button or cycling the power.
Not all NXP devices have a maufacturer code of 15H. If you were able to communicate with the device without Flash Magic complaining that the signature didn't match, then there is nothing to worry about. Assuming you didn't disable the signature check in the advanced options. Andy |
| Topic | Author | Date |
| 89V51RD2 ISP problem | 01/01/70 00:00 | |
| Hardware reset will do | 01/01/70 00:00 | |
| Tried power cycle, VRD2 RUN /PROG mode? | 01/01/70 00:00 | |
| which version of bootloader? | 01/01/70 00:00 | |
| Using Bootloader version 5 | 01/01/70 00:00 | |
| Is it really v5? | 01/01/70 00:00 | |
| RE: Is it really v5? | 01/01/70 00:00 | |
| my version of FM shows the bootloader version | 01/01/70 00:00 | |
| Reset Circuit | 01/01/70 00:00 | |
| yes, but... | 01/01/70 00:00 | |
| RE: Reset circuit, Bootloader mode? | 01/01/70 00:00 | |
| and the input? | 01/01/70 00:00 | |
| RE: and the input? | 01/01/70 00:00 | |
| throw the RC reset away | 01/01/70 00:00 | |
DO IT !! | 01/01/70 00:00 |