External RAM with FSMC bus + internal crystal.
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2012-02-05 11:19 PM
Posted on February 06, 2012 at 08:19
Hi all,
I have a problem with external RAM on FSMC bus (AHB3). If I use the external crystal the memory works well (12 Mhz + PLL to 96Mhz ), but if I use the internal crystal at 16Mhz + PLL to 96Mhz I stay blocked in while((RCC->CR & RCC_CR_PLLRDY) == 0) { } in system_stm32f4xx.c or go to HardFault interrupt... Is there a known limitation AHB3/Internal crystal ? Thanks Mikael #fsmc-external-ram
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FMC-FSMC
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