Hello!
I was able to read the device signature of the P89LPC936FDH (the response was 24H) and perform the blank check without any problems. After programming the device with a test software (it was Keil's blinky.hex file) the blinky program works as expected (full success). However I cannot re-program the device by no means with the "real" HEX file now nor does it respond any more to read requests from Flash Magic.
In order to avoid a mistake and as the the P89LPC936FDH is already rock-solid glued on the target board I tested the methodology of programming with both, the LPC932BA and the LPC935FA a hundred times successfully. After that careful examination I gave it a try: Now the P89LPC936 is blocked. I get "unable to connect at the specified baud rate ...
For further information: FM version 2.44, tried all BR 7200 kB/s down to 2400 kB/s,
"Erase all Flash" and "Erase blocks used by Hex File" was unchecked. And for sure I kept my fingers away from the Flash Magic ISP "Boot Vector and Status Bit" drop down menu.
Hardware environment: Original Keil MCB 900 board with 15 cm long wires from the 28-pins socket to the target Micro pins. Settings of T1: 250 ms and T2 120 ms. Measured VDD rise and fall times at the Micro: 0.05/0.35 ms. The digital signals Reset, TXD and RXD seem to be un-corrupted and without oscillations.
Have I killed the Micro? All assistance welcome. Please help!
Thanks,
Johnny
I was able to read the device signature of the P89LPC936FDH (the response was 24H) and perform the blank check without any problems. After programming the device with a test software (it was Keil's blinky.hex file) the blinky program works as expected (full success). However I cannot re-program the device by no means with the "real" HEX file now nor does it respond any more to read requests from Flash Magic.
In order to avoid a mistake and as the the P89LPC936FDH is already rock-solid glued on the target board I tested the methodology of programming with both, the LPC932BA and the LPC935FA a hundred times successfully. After that careful examination I gave it a try: Now the P89LPC936 is blocked. I get "unable to connect at the specified baud rate ...
For further information: FM version 2.44, tried all BR 7200 kB/s down to 2400 kB/s,
"Erase all Flash" and "Erase blocks used by Hex File" was unchecked. And for sure I kept my fingers away from the Flash Magic ISP "Boot Vector and Status Bit" drop down menu.
Hardware environment: Original Keil MCB 900 board with 15 cm long wires from the 28-pins socket to the target Micro pins. Settings of T1: 250 ms and T2 120 ms. Measured VDD rise and fall times at the Micro: 0.05/0.35 ms. The digital signals Reset, TXD and RXD seem to be un-corrupted and without oscillations.
Have I killed the Micro? All assistance welcome. Please help!
Thanks,
Johnny