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lpc4357 crash at 204Mhz at the beginning

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lpc4357 crash at 204Mhz at the beginning

‎06-15-2016 11:42 AM
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lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by jorya_txj on Sun Jul 05 09:48:22 MST 2015
I met a problem,  some lpc4357fet256 chip will crash at 204Mhz when system is booting up.The crash point is at function Chip_SetupCoreClock.I add some code delays in this function, it helps to reduce chance to crash but sometimes it still fail at start. I think it may be a chip issue.How to solve this problem?Thanks.
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‎06-15-2016 11:42 AM
291 Views
lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by jorya_txj on Sun Jul 05 21:20:46 MST 2015
Hi

I am cullently using LPCOpen 2.12 software package, it should cover frequency 204M.That's why I got confuesed.
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‎06-15-2016 11:42 AM
291 Views
lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by mc on Sun Jul 05 16:54:47 MST 2015
Hi,
The frequency should be increased in steps. Please see page 159/1433 of UM of detail. UM link is below
http://www.nxp.com/documents/user_manual/UM10503.pdf
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