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How to set this RCC_RDCR reigster for bootrom?

Daniel-0723
Associate
  • MCU: STM32N6
  • Register: RCC reset duration control register (RCC_RDCR)
    • Bits 27:24 EADLY[3:0]: External access delay
      The bit field is security-protected by the 1 bit. Set and reset by software.
      Time to wait before the BOOTROM performs any external device access
      0000: No extra delay added by the BOOTROM
      0001: 100 μs
      0010: 200 μs
      0011: 500 μs
      0100: 1 ms
      0101: 2 ms
      0110: 5 ms (default after reset)
      0111: 10 ms
      1000: 20 ms
      1001: 50 ms
      1010: 100 ms
      1011: 200 ms
      1100: 500 ms
      1101: 1 s
      1110: 2 s
      1111: 5 s
 

 

 
 
 

 

 

 

1 REPLY 1
Amel NASRI
ST Employee

Hi @Daniel-0723 ,

I assume that it remains as default value (5ms) if you don't change it.

Based on the article STM32N6 boot ROM explained provided by @B.Montanari and UM3234 How to proceed with boot ROM on STM32N6 MCUs, I don't see a particular setup for this register.

-Amel

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