| ??? 03/19/04 15:37 Read: times |
#67056 - RE: More details required Responding to: ???'s previous message |
hi,
look at its schematic. As rule, such devices have open drain output and it is not pull-upped to 9V. If so then you may connect it to MCU port directly. But I recommend to use optocoupler anyway. Regards, Oleg |
| Topic | Author | Date |
| re:wiring a smoke alarm into a 8051 | 01/01/70 00:00 | |
| RE: re:wiring a smoke alarm into a 8051 | 01/01/70 00:00 | |
| RE: re:wiring a smoke alarm into a 8051 | 01/01/70 00:00 | |
| RE: re:wiring a smoke alarm into a 8051 | 01/01/70 00:00 | |
| RE: re:wiring a smoke alarm into a 8051 | 01/01/70 00:00 | |
| More details erquired | 01/01/70 00:00 | |
| RE: More details required | 01/01/70 00:00 | |
| RE: More details required | 01/01/70 00:00 | |
| RE: More details required | 01/01/70 00:00 | |
| RE: optocoupler | 01/01/70 00:00 | |
RE: optocoupler | 01/01/70 00:00 | |
| RE: re:wiring a smoke alarm into a 8051 | 01/01/70 00:00 | |
| RE: re:wiring a smoke alarm into a 8051 | 01/01/70 00:00 | |
| RE: re:wiring a smoke alarm into a 8051 | 01/01/70 00:00 |