| ??? 06/18/05 09:30 Read: times |
#95258 - Defeating the object? Responding to: ???'s previous message |
Muhammad Naeem said:
Basically I am using 7 slave for expansion of IO pins. Mahesh Krishnan said:
you can do one thing you can convert the received serial data into a 8 bit or 16 bit parallel data , which is taken out through ports and send to the other controllers in parallel. Hmmm... I think this defeats the object of the exercise: He's adding these 7 slaves for "IO expansion" - if he now uses up 8 or even 16 pins (plus control signals!) on each processor for a parallel bus, he'll need to add even more slaves to achieve his required number of available IO pins!! But maybe he just has a bucketful of old 89C51s that he wants to use up...! ;-) |
| Topic | Author | Date |
| One 89c51 Master and 7 Slaves | 01/01/70 00:00 | |
| Multiple 8051s communication | 01/01/70 00:00 | |
| Standard IO expender | 01/01/70 00:00 | |
| try 74xx273 | 01/01/70 00:00 | |
| Try parallel comm, | 01/01/70 00:00 | |
| Defeating the object? | 01/01/70 00:00 | |
| Parallel communnication | 01/01/70 00:00 | |
| expand the i/o | 01/01/70 00:00 | |
| Cart Before Horse | 01/01/70 00:00 | |
| Why not HC595? | 01/01/70 00:00 | |
| questions | 01/01/70 00:00 | |
| Answer | 01/01/70 00:00 | |
| From CBHS to STPC | 01/01/70 00:00 | |
| textile machine ... | 01/01/70 00:00 | |
| You're never too old to learn | 01/01/70 00:00 | |
| RS-485?? | 01/01/70 00:00 | |
| CAN?? | 01/01/70 00:00 | |
| the most I ever drove | 01/01/70 00:00 | |
| For io expenssion | 01/01/70 00:00 | |
| Big Box | 01/01/70 00:00 | |
| The best: | 01/01/70 00:00 | |
| Maxim | 01/01/70 00:00 | |
| explain,what calculation | 01/01/70 00:00 | |
Hmmmm.... | 01/01/70 00:00 |