| ??? 01/02/03 14:38 Read: times |
#35412 - RE: P89C557E4 |
EA is connected to PSEN via a 3k3 resistor, this is how i got the hardware.
if internal code is used connect the pin to Vcc, if not, connect it to ground (use a cliplead, just to see). With a 3k3 resistor, you can leave the rest in. Are you sure the 3k3 goes to !PSEN ? One more question: how do you load your code into the chip ? Erik |
| Topic | Author | Date |
| P89C557E4 | 01/01/70 00:00 | |
| RE: P89C557E4 | 01/01/70 00:00 | |
| RE: P89C557E4 | 01/01/70 00:00 | |
| RE: P89C557E4 | 01/01/70 00:00 | |
| RE: P89C557E4 | 01/01/70 00:00 | |
| RE: P89C557E4 | 01/01/70 00:00 | |
| RE: P89C557E4 | 01/01/70 00:00 | |
| RE: P89C557E4 | 01/01/70 00:00 | |
| RE: P89C557E4 | 01/01/70 00:00 | |
| RE: P89C557E4 | 01/01/70 00:00 | |
| RE: P89C557E4 | 01/01/70 00:00 | |
| RE: P89C557E4 | 01/01/70 00:00 | |
| RE: P89C557E4 | 01/01/70 00:00 | |
| RE: P89C557E4 | 01/01/70 00:00 | |
RE: P89C557E4 | 01/01/70 00:00 |



