| ??? 03/12/10 19:20 Read: times |
#174079 - Usually not needed... Responding to: ???'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 | 01/01/70 00:00 | |
| backwards | 01/01/70 00:00 | |
| more specific | 01/01/70 00:00 | |
| The clue is in the name! | 01/01/70 00:00 | |
| More question | 01/01/70 00:00 | |
| Usually not needed... | 01/01/70 00:00 | |
| correction | 01/01/70 00:00 | |
| Correction?? | 01/01/70 00:00 | |
| Tell your lecturer ... | 01/01/70 00:00 | |
| First page of data sheet... | 01/01/70 00:00 | |
| What did he actually mean by that? | 01/01/70 00:00 | |
| In the spec i need explanation a bit | 01/01/70 00:00 | |
explanation | 01/01/70 00:00 | |
| '245 and '51 | 01/01/70 00:00 |