| ??? 03/05/09 18:19 Read: times |
#163109 - and Erik one last.. Responding to: ???'s previous message |
don't mind for asking this again,
if I write the program without using the Xbyte type access(treating R.T.C as an external memory), how can i latch the address with out controlling AS pin of R.T.C(which is connected to ALE!)? The timing diagram clearly mentions about the AS pin use. also, since i cannot use external memory access with this connections, Please tell if there are any links or books where I can do some reference work regarding this method. and also what you said is absolutely true. I forgot to realize that my led's are connected to LATCH whose enable connected to P2.0. I am sending 0x8000. which means 00h is placed on P0 and 80h on P2, thus P2.0=0; making the Latch pin LE=0 and thus disabled! |
| Topic | Author | Date |
| RTC DS12c887 Chip select | 01/01/70 00:00 | |
| WHY ON EARTH | 01/01/70 00:00 | |
| with the help of Xbyte or XDATA | 01/01/70 00:00 | |
| Speaking the Truth....... | 01/01/70 00:00 | |
| I don't see | 01/01/70 00:00 | |
| what you said is true. but there is another | 01/01/70 00:00 | |
| Even with !CS == 1 ?? | 01/01/70 00:00 | |
| I have done that before posting this thread! | 01/01/70 00:00 | |
| How fast multimeter | 01/01/70 00:00 | |
| actually.. | 01/01/70 00:00 | |
| I just saw it | 01/01/70 00:00 | |
| then I am in real trouble | 01/01/70 00:00 | |
| replace the XBYTE with ... | 01/01/70 00:00 | |
| sorry but... | 01/01/70 00:00 | |
| or | 01/01/70 00:00 | |
| Play with the ports | 01/01/70 00:00 | |
| thank god | 01/01/70 00:00 | |
| sorry I could not reply due to my ill health | 01/01/70 00:00 | |
| it is | 01/01/70 00:00 | |
and Erik one last.. | 01/01/70 00:00 |