| ??? 06/23/05 17:35 Read: times |
#95750 - other controllers Responding to: ???'s previous message |
Vignesh Prasad said:
I found one thing: all the projects which I saw did not use any 8051 variant. They were using other controllers(AVR, PIC) or directly from PC's parallel port. Is there anything specific with that? I went through the datasheet and I found that 89s52 is perfectly suited for this application.
Might be worth checking the port IO structures: maybe they assume push-pull drivers, where you're using an open-drain pin? Remember that you need to write a '1' to an 8051 pin in order to be able to read its value... |
| Topic | Author | Date |
| Nokia 3310 LCD & 89s52 | 01/01/70 00:00 | |
| Not tried it | 01/01/70 00:00 | |
| Contrast | 01/01/70 00:00 | |
| other controllers | 01/01/70 00:00 | |
| use pressure | 01/01/70 00:00 | |
| Re: connector | 01/01/70 00:00 | |
| scope! | 01/01/70 00:00 | |
| dedicated SPI port | 01/01/70 00:00 | |
| SPI with not response | 01/01/70 00:00 | |
| Check the pins | 01/01/70 00:00 | |
| Re: port structures | 01/01/70 00:00 | |
| more scope now!! | 01/01/70 00:00 | |
| 89S52 at 3.3V? | 01/01/70 00:00 | |
| What a memory | 01/01/70 00:00 | |
| AT89LS52 | 01/01/70 00:00 | |
| 3310 LCD and C code | 01/01/70 00:00 | |
| Interesting | 01/01/70 00:00 | |
oops!! | 01/01/70 00:00 |