| ??? 02/18/08 13:28 Read: times |
#151004 - sounds like missing pullups Responding to: ???'s previous message |
I'm having a conceptual problem. I am using port 0 to control a alphanumberic decoder ic. It uses 6 data lines for the 64 char matrix character generation. Assuming D0-D7, D0-D5 are the data lines D6 is the write line, and D7 is the clear line.
Erik read up on ports in ch3 in "the bible" here are the links to "the bible" Chapter 1 - 80C51 Family Architecture: http://www.nxp.com/acrobat_d...ARCH_1.pdf Chapter 2 - 80C51 Family Programmer’s Guide and Instruction Set: http://www.nxp.com/acrobat_d...UIDE_1.pdf Chapter 3 - 80C51 Family Hardware Description: http://www.nxp.com/acrobat_d...WARE_1.pdf |
| Topic | Author | Date |
| For loop parsing with a rising edge write | 01/01/70 00:00 | |
| Forgot to mention | 01/01/70 00:00 | |
| Not sure how it should work... | 01/01/70 00:00 | |
| I don't quite understand what's your problem... | 01/01/70 00:00 | |
| Better clarification of error I hope... | 01/01/70 00:00 | |
| No, it would not work | 01/01/70 00:00 | |
yeah. my bad... | 01/01/70 00:00 | |
| No problem here | 01/01/70 00:00 | |
| Is the string fixed or variable length ? | 01/01/70 00:00 | |
| Ment to mention | 01/01/70 00:00 | |
| Oh - I C | 01/01/70 00:00 | |
| I have the answer thanks to you folks...:) | 01/01/70 00:00 | |
| sounds like missing pullups | 01/01/70 00:00 |