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Hi all,

I am trying to implement the watchdog function in project using the 89LPC935FA devices. I am also using Flash Magic and MCB900 to program the devices.

Following the sample codes supplied by keil, I tried many times to implement the watchdog to reset the device but I failed.

I refer to the User Manual of the device, I notice that UCFG1 is a factory setting.

In our factory, devices have already been purchased, how can I change this UFCG1 ?

Is there someone who can help me?

Thanks a lot,

Jimmy

Hi all,

I am a new user of the Philips 8051 MCU family and I am evaluating the P89LPC922 (DIP20 version). I am evaluating this device without starter kit.  I am using uVision2 from Keil and I have inserted two files in project: LPC_ISP_8K_V02.a51 and Start900.a51

I am also experiencing the same problem. Before writing my code to the device, I could make  a blank check, read the device signature.

After downloading my first program to the device, I am no longer able to do anything.  Each time that "Flash Magic" tries to contact the device, I always got the same message : "Unable to connect.... Reset the hardware in ISP mode again".

I seems that the IPS mode is lost forever.

Is there something wrong?

Thanks so much for your help

Jimmy