| ??? 11/05/05 02:51 Modified: 11/05/05 03:07 Read: times |
#103301 - atmel isp |
hi guys i might be going over old ground but i need your help. i am having trouble with a isp programmer for at89s52 which i was using atmel micocontroller isp software from atmel's site.there so much said in other posts but it's all a bit confusing. i have built this circuit from here.
http://www.atmel.com/dyn/resou...p_C_v5.PDF but i am using a 74hc244 instead of a 74vhc244 which i can't get working. i know there are alot of other programmers out there but i would like to get this one working if i could. so my question is does this circuit work with my microcontroller and is that part change from 74vhc244 to 74hc244 a problem. also i dont't understand how the error circuit works in this schematic if someone could help i would be greatful |
| Topic | Author | Date |
| atmel isp | 01/01/70 00:00 | |
| check out | 01/01/70 00:00 | |
| isp | 01/01/70 00:00 | |
| home Atmel ISP cable | 01/01/70 00:00 | |
You could try this... | 01/01/70 00:00 | |
| VHC-version is needed | 01/01/70 00:00 | |
| absolutely necessary? | 01/01/70 00:00 | |
| If it was so simple... | 01/01/70 00:00 | |
| 74vhc244 | 01/01/70 00:00 | |
| No access to digikey in Australia? | 01/01/70 00:00 | |
| can somebody please explain | 01/01/70 00:00 | |
| Here comes my explaination | 01/01/70 00:00 | |
| bad nomenclature ... | 01/01/70 00:00 | |
| Nomenclatura | 01/01/70 00:00 | |
| just explaination | 01/01/70 00:00 |