??? 05/05/08 18:35 Modified: 05/05/08 19:09 Read: times |
#154442 - A possible end ? Responding to: ???'s previous message |
Hi, again, I believe it works, because I cut the 8-pin of DB25 connection with the 126, and change 126 to 125 and test it with:
http://www.mediafire.com/?qjxbngjt1mn CUSTOM PINOUT: STROBE1 -> NOT USED STROBE2 -> NOT USED RESET -> PIN 3 MOSI -> PIN 9 SCK -> PIN 2 MISO -> PIN 11 FRECUENCY <= FCLK/6 = (example) = 11.0592MHz/6 = 1.8432MHz (Note: it works up to FCLK/2, but not always) (More notes: I´m not sure but db25 is TTL?, if so I use HC126 this connection may require pull up resistors (I could use HCT but I don´t have it and in the weekend electronic houses are closed), however I didn´t place it and it still works(so I conclude that the port was not full loaded so VOH > 3.5V)) Some horrible resolution photos: Regards Lee |
Topic | Author | Date |
Visisp 52 does it works with at89s8253? | 01/01/70 00:00 | |
A possible end ? | 01/01/70 00:00 |