| ??? 11/27/09 16:49 Read: times |
#171245 - Three Pulses Responding to: ???'s previous message |
David Prentice said:
Most bootloaders start if you Reset when a particular pin is held high or low.
That is all that the RTS, DTR lines do. You just do the same thing manually --- with your own fingers. The P89LPC9xx family use three or seven pulses on the reset pin to enter ISP or ICP mode. Therefore some additional circuitry, like the MCB900 board has, needs to be added. The schematic diagram for the MCB900 is available at http://www.keil.com/mcb900 Andy |
| Topic | Author | Date |
| programming lpc932 with just RX,TX | 01/01/70 00:00 | |
| read the FlashMagic info and ... | 01/01/70 00:00 | |
| i've read it | 01/01/70 00:00 | |
| Press Reset while PSEN is low. | 01/01/70 00:00 | |
| Three Pulses | 01/01/70 00:00 | |
| DO NOT substitute | 01/01/70 00:00 | |
| some progress... | 01/01/70 00:00 | |
... problem solved! | 01/01/70 00:00 |