| ??? 06/18/02 08:26 Read: times |
#24562 - RE: more I/O lines with 89c2051 |
Hi Andy,
seems, you dont know the AT89C2051. Its in a 20 pin case without P0, P2. So any usage of PSD or 8255 was impossible ! Only 74HC165 / 74HC595 (4 wire) or PCF8574 (2 wire) solutions can be used. Peter |
| Topic | Author | Date |
| more I/O lines with 89c2051 | 01/01/70 00:00 | |
| RE: more I/O lines with 89c2051 | 01/01/70 00:00 | |
| RE: more I/O lines with 89c2051 | 01/01/70 00:00 | |
| RE: more I/O lines with 89c2051 | 01/01/70 00:00 | |
| RE: more I/O lines with 89c2051 | 01/01/70 00:00 | |
| RE: more I/O lines with 89c2051/Peter | 01/01/70 00:00 | |
| RE: more I/O lines with 89c2051/Peter | 01/01/70 00:00 | |
| RE: more I/O lines with 89c2051/Peter | 01/01/70 00:00 | |
| RE: more I/O lines with 89c2051 | 01/01/70 00:00 | |
| RE: more I/O lines with 89c2051 | 01/01/70 00:00 | |
| RE: more I/O lines with 89c2051 | 01/01/70 00:00 | |
RE: more I/O lines with 89c2051 | 01/01/70 00:00 |