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LPC1857 not booting

Question asked by Vivek John on Feb 14, 2018
Latest reply on Feb 17, 2018 by Vivek John

Hai i am using LPC1857 in a custom designed card. I have followed the hardware design of MCB2300. My board was working well for months and suddenly it stopped working. Since it was working alright earlier, i didnt doubt the hardware design and hence made 4 more such boards. But now none of the boards are working/booting. In JTAG ( i am using both keil ULINK2 and Segger JLINK with KEIL microvision IDE) the core/cpu is not getting detected now. Also, i am not able to get any clock signals in the XTAL1 & 2 pins to which i have connected the 12MHz crystal. Even i tried giving an external oscillator signal to the GP_CLKIN but still not booting.

Can anyone help me out to solve this issue?