| ??? 12/31/05 18:10 Read: times |
#106298 - not to beat a dead horse Responding to: ???'s previous message |
But I'm not a h/w guy. It seems to me this kind of circuit though should need some more components (I see the 74ls125 has a number of 'capacitor' leads for example).
Can I just build this as is or is there a bunch more that's needed? One more thing, I do have a 20mhz crystal (all I could find), and 2 33pf caps for it. Anything else obvious that I'm missing? |
| Topic | Author | Date |
| ds89c420 programmer | 01/01/70 00:00 | |
| clarification | 01/01/70 00:00 | |
| schematic | 01/01/70 00:00 | |
| Now I understand what you mean... | 01/01/70 00:00 | |
| so, I'm correct? | 01/01/70 00:00 | |
| Yes, you are | 01/01/70 00:00 | |
| not to beat a dead horse | 01/01/70 00:00 | |
| Much more | 01/01/70 00:00 | |
| given | 01/01/70 00:00 | |
thanks | 01/01/70 00:00 | |
| DS89C420 ISP | 01/01/70 00:00 | |
| isp response | 01/01/70 00:00 | |
| External access | 01/01/70 00:00 | |
| caps for crystal | 01/01/70 00:00 | |
| Only NP0 ceramics! | 01/01/70 00:00 | |
| over my head | 01/01/70 00:00 | |
| NP0, X7R, Z5U | 01/01/70 00:00 | |
| digikey will be my friend | 01/01/70 00:00 | |
| Everybody probably already knows | 01/01/70 00:00 | |
| Overlapping standards | 01/01/70 00:00 | |
| holy moly | 01/01/70 00:00 | |
| Oh dear...! | 01/01/70 00:00 | |
| now you're playing me right? | 01/01/70 00:00 | |
| Not really | 01/01/70 00:00 | |
| yes really ;) | 01/01/70 00:00 | |
| one more thing | 01/01/70 00:00 | |
| Sure | 01/01/70 00:00 | |
| max232 charge caps | 01/01/70 00:00 | |
| Yes | 01/01/70 00:00 | |
| a good reference for this . . . | 01/01/70 00:00 | |
| thx | 01/01/70 00:00 |