| ??? 04/05/08 23:17 Read: times |
#152990 - 8052.com SBC Responding to: ???'s previous message |
Richard Erlacher said:
The ISP programing circuit for the DS89C4x0 involves, aside from the MAX232, three tristate buffers that directly drive nEA, RESET, and nPSEN. How did that come to be on the 8052SBC? By design? That's usually the only way things like that get onto an SBC or any other circuit. :) Regards, Craig Steiner |
| Topic | Author | Date |
| Take this up with the Maxim/Dallas support guys | 01/01/70 00:00 | |
| Why ? | 01/01/70 00:00 | |
| meaty PSU | 01/01/70 00:00 | |
| Mke sure you've got the right software | 01/01/70 00:00 | |
| Dallas MTK | 01/01/70 00:00 | |
| You've got to use exactly the parts they recommend | 01/01/70 00:00 | |
| no scope | 01/01/70 00:00 | |
| I'm not sure this is a deal-breaker ... | 01/01/70 00:00 | |
| same with DS89C420 | 01/01/70 00:00 | |
| decoupling | 01/01/70 00:00 | |
| I have no confidence at all in "breadboards" | 01/01/70 00:00 | |
| stripboard circuit works! | 01/01/70 00:00 | |
| about that bootloader ... | 01/01/70 00:00 | |
| that will not help | 01/01/70 00:00 | |
about those decoupling capacitors | 01/01/70 00:00 | |
| In case you're curious ... | 01/01/70 00:00 | |
| my DS89C450 experience was... | 01/01/70 00:00 | |
| What did you do? | 01/01/70 00:00 | |
| 8052.com SBC | 01/01/70 00:00 | |
| How considerate! | 01/01/70 00:00 | |
| progress ? | 01/01/70 00:00 | |
| programming circuit variations ... FIY | 01/01/70 00:00 | |
| DS89C430 boot loader | 01/01/70 00:00 |