| ??? 11/29/05 17:34 Read: times |
#104379 - Breadboarding Responding to: ???'s previous message |
Erik Malund said:
This doesn't sound too good. Can you give an online reference?
just be aware, that you use VERY short leads, limit parallel runs etc. Think capacitive and inductive copupling. It can be done, but just willy-nillt wiring components far away from each other for the sake of "access" will get you in trouble. The circuit around the xtal and the 2 caps is especially critical. It has beed discussed here at 8052 severasl times. Note that the oscillator frequency is virtually irrelevant, it i the risetimes that matter. One other comment DO use a soldered breadboard, not the push the wires in type. I was going to have a 12Meg Xtal and one timer counting seconds. If you plan on using the UART, use a 11.0592 xtal instead. Erik I had no idea my breadboard was no good, altho I should have suspected. Maybe I'll do the whole thing on the PJRC dev board. Would wire-wrapping be okay? |
| Topic | Author | Date |
| From PJRC board to breadboard? | 01/01/70 00:00 | |
| Go to www.pjrc.com again | 01/01/70 00:00 | |
| Building 89C2051 ICP on PJRC dev board | 01/01/70 00:00 | |
| I would recommend you... | 01/01/70 00:00 | |
| Atmel's ISP system | 01/01/70 00:00 | |
| Re | 01/01/70 00:00 | |
| Atmel's ISP system | 01/01/70 00:00 | |
| If it is either of those there is no com | 01/01/70 00:00 | |
| Breadboarding | 01/01/70 00:00 | |
| just be aware | 01/01/70 00:00 | |
| Breadboarding | 01/01/70 00:00 | |
| same restrictions | 01/01/70 00:00 | |
| What you need is a solid ground plane | 01/01/70 00:00 | |
a better solution often is to purchase a | 01/01/70 00:00 | |
| hex-file is needed | 01/01/70 00:00 | |
| Flat cable? | 01/01/70 00:00 | |
| Flat cable | 01/01/70 00:00 |