| ??? 09/05/05 04:09 Read: times |
#100585 - p89c51rc2bn isp |
hi guys i was hoping someone might be able to help me i have built a isp programmer for a p89c51rc2bn using the same circuit in an461 but only diffrences is i have tied p2.6 p2.7 to vcc through 10k resistors and for a reset circuit i am using a ds1223 reset assistant but it won't write to read the chip i have tried the terminal test sending a U i have checked if it transmitts and recieves the U which it does but flashmagic says that it can not communicate recieve or transmitt makesure nothing is using the port and in the terminal in flashmagic if i send a U i get a strange looking f so if anyone can help me i would be greatful |
| Topic | Author | Date |
| p89c51rc2bn isp | 01/01/70 00:00 | |
| isp-programming--p89c51rc2bn isp | 01/01/70 00:00 | |
| isp-programming--p89c51rc2bn isp | 01/01/70 00:00 | |
| isp | 01/01/70 00:00 | |
| Lower the baud rate and try again. | 01/01/70 00:00 | |
| isp | 01/01/70 00:00 | |
| ds1223? | 01/01/70 00:00 | |
| isp | 01/01/70 00:00 | |
| ds1232 | 01/01/70 00:00 | |
| isp | 01/01/70 00:00 | |
| He means neither, the 1232 WILL issue a | 01/01/70 00:00 | |
| watchdog fed from ISP | 01/01/70 00:00 | |
| DS1232 ISP | 01/01/70 00:00 | |
| isp | 01/01/70 00:00 | |
| something is defective the chip, your re | 01/01/70 00:00 | |
| oh those datasheets | 01/01/70 00:00 | |
| It's there | 01/01/70 00:00 | |
| #$%^ ! | 01/01/70 00:00 | |
Rev. 02 — 11 October 2004 | 01/01/70 00:00 |