4 Replies Latest reply on Dec 7, 2017 6:37 AM by user_288758801

    CY8C4245AXI-483 programming issue

    user_288758801

      dear all,

       

      i am using CY8C4245AXI-483 in my product. up to date i had used thousand of chips.

       

      i am using miniprog3 and my standard product pcb.

       

      i was using creator 3.1 and now 4.1

       

      i have recently purchased 320 chips and for that i am facing following problems.

       

      i am always using miniprog as 5v, reset cycle, 1.6 MHz.(as my default)

      pin no 13 and 14 gets connected to miniprog via 330E resistances.

       

      chip detection by miniprog display for 2 to 3 sec. and get disappears. after removing and again connecting miniprog chip does not get detected

       

      nothing is going hot, failure of usb supply etc

       

      so i checked VCCD voltage it comes to near 200mV from 1.7V. (VCCD is bypassed with 1uF)

      XRES remains to zero.

       

      please help.

       

      .