| ??? 07/18/06 13:37 Read: times |
#120473 - Vivek Responding to: ???'s previous message |
Dear Vivek!
I think you have ready prototype board. You need solve one problem! Is this stuff RI-R6C-001A work on the same supply as your "8051" it would be just connected to free pins of any port P1, P2, P3 or P0, but in P0 with pullup resistors. Sclock is input, DOT is an output and DIn is another input. So good way is use different port for input and output, but it isn't neccesary. In a moment when there is different supply maybe 5 and 3,3V, you will need use level converter. A simplest is on Open Collectors array ULN2003A or transistors with resistors pullup to correct supply. |
| Topic | Author | Date |
| 8051 interfacing | 01/01/70 00:00 | |
| 8051 interfacing | 01/01/70 00:00 | |
| there is no such thing as an 8051 | 01/01/70 00:00 | |
| You really ARE nuts, aren't you, Erik! | 01/01/70 00:00 | |
| Vivek | 01/01/70 00:00 | |
| You confirm in your response what I said "there | 01/01/70 00:00 | |
| You\'re certainly right in that regard! | 01/01/70 00:00 | |
| Heresy. | 01/01/70 00:00 | |
| You mean HTRC110 RFID reader? | 01/01/70 00:00 | |
| 80c51 style Micro with TI RFID reader IC | 01/01/70 00:00 | |
Vivek | 01/01/70 00:00 |