| Kai Klaas 03/12/10 13:20 Read: 179 times Germany |
#174079 - Usually not needed... Responding to: Jason Khoo's previous message |
Jason said:
What this IC used for if combine with the 89s52 ?? The idea of the use of a microncontroller is to have everything built-in, like RAM, code memory, timers, watchdogs, oscillators, etc. So, the port lines of a micro are usually only strong enough to drive a few external chips. If you need to drive more, e.g. a big memory array with extended bus wiring, then you should add some bus drivers. Kai Klaas |
| Topic | Author | Date |
| Wanna ask about SN74LS245 Octal Bus Transceivers | Jason Khoo | 03/12/10 09:39 |
| backwards | Andy Peters | 03/12/10 12:22 |
| more specific | Jason Khoo | 03/12/10 19:33 |
| The clue is in the name! | Andy Neil | 03/12/10 12:54 |
| More question | Jason Khoo | 03/12/10 19:37 |
| Usually not needed... | Kai Klaas | 03/12/10 13:20 |
| correction | Jason Khoo | 03/12/10 19:41 |
| Correction?? | Kai Klaas | 03/14/10 09:23 |
| Tell your lecturer ... | Rob Klein | 03/14/10 09:55 |
| First page of data sheet... | Michael Karas | 03/14/10 10:26 |
| What did he actually mean by that? | Andy Neil | 03/14/10 12:50 |
| In the spec i need explanation a bit | Jason Khoo | 03/12/10 23:24 |
explanation | Andy Peters | 03/16/10 12:45 |
| '245 and '51 | Erik Malund | 03/13/10 07:04 |