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Messages - shawyoo

#1
LPC2xxx / Re: Help: LPC2368 can't ISP
December 25, 2006, 05:04:04 PM
   I  bought 10 piece of LPC2368 lastly. Try again.
#2
LPC2xxx / Re: Help: LPC2368 can't ISP
December 22, 2006, 07:13:16 PM
   Yes, the circuit works with all the LPC2xxx devices except the LPC2368.
   I disbelieve the LPC2368 has wrong. But, 3 circuit boards,all of LPC2368 were wrong?? I only have 3 samples,can't buy it at China.
   All of devices are using the 10K resistor.the 10K resistor just only make the HC4053's channel select pin to low level easy.
   Thank you
#3
LPC2xxx / Help: LPC2368 can't ISP. Thank you
December 22, 2006, 01:02:51 AM
     I use the DTR and RTS control  Reset and ISP  Enable PIN (Reset PIN number 17, ISP Enable PIN number 53,(P2.10)

   I use this circuit in LPC210x and LPC213x and LPC22xx system, it can ISP the MCU.

  I had change the R15 from 1K to 10K.

  I had check the power 3.3V is right, and the circuit no problem.

  I do't know why it can't ISP.

  Thank you