| ??? 03/20/11 13:00 Read: times |
#181616 - Tried port 0 Responding to: ???'s previous message |
Kai Klaas said:
SDA and SCL must be driven by open-collector or open-drain outputs. But you drive them by the bidirectional ports P1.0 and P1.1!
Tried port0.7 & port 0.6. With or without external pull ups, exactly the same response from the MAX521:( As per the data sheets, no external pull ups are required. Page 10 http://datasheets.maxim-ic.com/en/ds/MAX...MAX521.pdf |
| Topic | Author | Date |
| Getting a MAX521 to work with AT89S52 | 01/01/70 00:00 | |
| Open-collector or open-drain! | 01/01/70 00:00 | |
| Quasi bidirectional | 01/01/70 00:00 | |
| Tried port 0 | 01/01/70 00:00 | |
| Checked these things? | 01/01/70 00:00 | |
| Tried these as well | 01/01/70 00:00 | |
| Is the micro running at all? | 01/01/70 00:00 | |
Solved!!! | 01/01/70 00:00 |