| ??? 06/01/07 17:36 Read: times |
#140176 - programming P89LPC935 |
Hi
I use lpc935fa in my project. To program it via isp (Flash-magic)i use max232 and 2 npn transistors to go from 3.3 to 5 volts for txd and 2 npn transistors to go from 5 to 3.3 volts for rxd. (i will use max3232 but it will take 15-20 days to get it) Everything works fine with: ------- P89LPC935FA CD3829 TtG0439 A ------- Yesterday i receive ------- P89LPC935FA Pb-Free Package 452004 ------- Flash magic can't communicate with these new chips. After reset, i measure 0 volts on pins rxd and txd. Seems like they are in input or open drain mode. Excuse my bad english. thanks for any help. |
| Topic | Author | Date |
| programming P89LPC935 | 01/01/70 00:00 | |
| There is no reason whatsoever | 01/01/70 00:00 | |
| programming p89lpc935 | 01/01/70 00:00 | |
| LPC935 Source | 01/01/70 00:00 | |
| LPC935 Default | 01/01/70 00:00 | |
| lpc935 source | 01/01/70 00:00 | |
| LPC935 Clock source? | 01/01/70 00:00 | |
| I guess | 01/01/70 00:00 | |
| i guess | 01/01/70 00:00 | |
| ISP to ICP bridge | 01/01/70 00:00 | |
| ISP to ICP bridge | 01/01/70 00:00 | |
| ICP | 01/01/70 00:00 | |
| bridge | 01/01/70 00:00 | |
| PS Use the latest version of Flashmagic | 01/01/70 00:00 | |
got new chips | 01/01/70 00:00 |