| ??? 06/30/04 08:54 Read: times |
#73423 - RE: Real Time Clock. Responding to: ???'s previous message |
can i ask what inspired you to use PCF?
is it the accurancy? because you can use a temperature compensated crystal DS32KHz and be as accurate as +/-1 Min/yr instead of +/-5 Min/year with a conventional crystal. of course, your development costs will grow a little but if you need the accurancy... there is a graph of temperature vs ppm in page 2 http://pdfserv.maxim-ic.com/en/an/app58.pdf here's the link for DS32KHz http://pdfserv.maxim-ic.com/en/ds/DS32kHz.pdf |
| Topic | Author | Date |
| Real Time Clock. | 01/01/70 00:00 | |
| RE: Real Time Clock. | 01/01/70 00:00 | |
| Dead Thread | 01/01/70 00:00 | |
| RE: Real Time Clock. | 01/01/70 00:00 | |
| RE: Real Time Clock. | 01/01/70 00:00 | |
| RE: Real Time Clock. | 01/01/70 00:00 | |
| RE: Real Time Clock. | 01/01/70 00:00 | |
| higher accuracy? | 01/01/70 00:00 | |
| RE: higher accuracy? Of course ! | 01/01/70 00:00 | |
| Vengance? | 01/01/70 00:00 | |
| RE: Vengance? | 01/01/70 00:00 | |
| RE: Vengance? Of course no ! | 01/01/70 00:00 | |
| RE: Vengance? | 01/01/70 00:00 | |
Higher accuracy without calibration | 01/01/70 00:00 | |
| RE: Real Time Clock. | 01/01/70 00:00 | |
| RE: Real Time Clock. | 01/01/70 00:00 | |
| RE: Real Time Clock. | 01/01/70 00:00 | |
| RE: Real Time Clock. | 01/01/70 00:00 |