| ??? 02/12/05 20:33 Read: times |
#87230 - Logic Levels Responding to: ???'s previous message |
Thanks for the link
Iztok Moravsek said:
Andy says
Look carefully: is 2.65V the threshold for a 'High', or is it the maximum valtage that may be applied to the pin? The question which you posted is MY question. The datasheet do not answer this question. Actually, the datasheet seems pretty clear to me: VIHmin = 1.95V - the minimun input voltage that will be recognised as a logic 'High'; VIHmax = 3.3V - the maximun input voltage allowed as a logic 'High'; VOHmin = 2.35V - the minimun output voltage for a logic 'High'; VOHmax = 2.73V - the maximun output voltage for a logic 'High'; http://www.falcom.de/pub/MANUA...minary.pdf Table 7, page 24. Section 6.1.4, on p45, says, "E.g. in order to provide RS232 compatible levels use the 3 V compatible MAX3232 transceiver from Maxim" |
| Topic | Author | Date |
| GSM Falcom C55 | 01/01/70 00:00 | |
| Read carefully | 01/01/70 00:00 | |
| Possibly | 01/01/70 00:00 | |
| Level translation | 01/01/70 00:00 | |
| Let's have a look | 01/01/70 00:00 | |
| Link | 01/01/70 00:00 | |
| Vmax | 01/01/70 00:00 | |
| Logic Levels | 01/01/70 00:00 | |
| Thanks, Level translation | 01/01/70 00:00 | |
just use the one suggested by Falcom | 01/01/70 00:00 |