| ??? 07/13/09 07:18 Read: times |
#167162 - Look at the DS1307 datasheet Responding to: ???'s previous message |
Erik Malund said:
BCD is the most significant value in the left nibble and the least significant value in the right nibble. To be more precise, it is the most-significant digit in the left (ie, most-significant) nibble and the least-significant digit in the right (least-significant) nibble. Again, this requires an understanding of the basic principles of place value... The figures in the DS1307 datasheet actually show how the digits of the day/month/etc values fit into the fields of the different registers... Of course, these values are special cases - eg, the most-significant digit of a day cannot be >3; the most-significant digit of a month can only ever be 0 or 1 - so complete nibbles are not always needed... |
| Topic | Author | Date |
| Convert BCD, hex and decimal in C (DS1307 related) | 01/01/70 00:00 | |
| Keyboard? | 01/01/70 00:00 | |
| Another thought about that keyboard... | 01/01/70 00:00 | |
| Re:Another thought about that keyboard... | 01/01/70 00:00 | |
| Wrong approach? | 01/01/70 00:00 | |
| Re: Wrong approach? | 01/01/70 00:00 | |
| Division | 01/01/70 00:00 | |
| Not a shortcut? | 01/01/70 00:00 | |
| Re: Not a shortcut? | 01/01/70 00:00 | |
| Basics (edited) | 01/01/70 00:00 | |
| addition to the above | 01/01/70 00:00 | |
| Look at the DS1307 datasheet | 01/01/70 00:00 | |
| Check this | 01/01/70 00:00 | |
Incorrect | 01/01/70 00:00 |