| ??? 01/17/07 19:05 Read: times |
#130987 - Use I/O expander Responding to: ???'s previous message |
See this site where you can use I/O expander.
http://www.airborn.com.au/8051/2wio8051.html With this you need smallest derivative namely 89c2051 and speed is 24Mhz (12 clocker). with spare pins you can add a 3to8 decoder and use with latches 8x8= 64 outputs ! |
| Topic | Author | Date |
| MCS-51 I/O PORT EXPANDER | 01/01/70 00:00 | |
| read the FAQ | 01/01/70 00:00 | |
| 2. | 01/01/70 00:00 | |
| beware | 01/01/70 00:00 | |
| hard? | 01/01/70 00:00 | |
| Maybe, but... | 01/01/70 00:00 | |
| Could be a place for ... take a deep breath ... | 01/01/70 00:00 | |
| Richard, please,... | 01/01/70 00:00 | |
| Have you noticed the loss of the O/P? | 01/01/70 00:00 | |
| Give him a chance... | 01/01/70 00:00 | |
| It\\\'s come up before ... perhaps it\\\'s homework | 01/01/70 00:00 | |
| Don't you mean... | 01/01/70 00:00 | |
| well, yes, but if one works ... more will, too | 01/01/70 00:00 | |
| go for SILabs | 01/01/70 00:00 | |
| maybe a bit more information is needed | 01/01/70 00:00 | |
| Use I/O expander | 01/01/70 00:00 | |
| This suggestion, while good, is entirely premature | 01/01/70 00:00 | |
| if very high speed is no concern go for IIC | 01/01/70 00:00 | |
| Do you notice that we've lost the O/P? | 01/01/70 00:00 | |
| I don't think so | 01/01/70 00:00 | |
That would explain the nomenclature | 01/01/70 00:00 |