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Reset problem in P89LV51RD2

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binojkumar

binojkumar

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i have P89LV51RD2 with ICL3232 serial support(3v). The ISP programming is working but some times it shows error "Unable to communicate, failed to auto baud". if i try again for 3 or 4 times it will work.

In the reset circuit i use 10 06 8.2k resistor with 10uf capacitor. Crystal 27 mhz.

what could be the problem? pls help
 

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