Hello guys,once i programmed Lpc 938,it refuses reprogram it again.sometimes I should raise the value of T1 and T2 in hardware config at flash magic situated in advanced options to reprogram it.
could any help.thanks
For the MCB900 I believe T1 should be around 120 and T2 should be around 240. Changing these numbers is normally only required to overcome capacitances on the signals and power supply.
You need to put a scope on the power and reset pins of the device and verify the ISP entry waveform matches the requirements in the NXP user manual.
Andy
Hi Andy thanks for your replay but please I am still lost .do you have the link where I can down load the nxp manual.
thanks