| ??? 07/26/06 17:47 Read: times |
#121104 - AT89ISP Cable Responding to: ???'s previous message |
Problem solved!
I've replaced the chip and it still didn't work. So, the only source of problem could be the JTAG. I've replaced the buffer IC, instead of 74VHC244, I put an SN74F244, and now it works! What's amazing here is that 74VHC244 worked very well with AT89S8252. Now I'll start to build the JTAG suggested by Kai, to eradicate the problem. My best regards, Leonardo Starling. |
| Topic | Author | Date |
| AT89ISP - AT89S8253 Write Failure - Fuse4 | 01/01/70 00:00 | |
| seek and ye shall find | 01/01/70 00:00 | |
| AT89ISP - AT89S8253 Write Failure - Fuse4 | 01/01/70 00:00 | |
| can't help you there, I refuse to use Atmel chips, | 01/01/70 00:00 | |
| Some ideas... | 01/01/70 00:00 | |
| Thanks!! | 01/01/70 00:00 | |
| AT89ISP Cable | 01/01/70 00:00 | |
| Nice! | 01/01/70 00:00 | |
| new JTAG comming up... | 01/01/70 00:00 | |
| Atmel design | 01/01/70 00:00 | |
| good idea | 01/01/70 00:00 | |
here? | 01/01/70 00:00 | |
| Look here | 01/01/70 00:00 | |
| thanks | 01/01/70 00:00 |