How to set this RCC_RDCR reigster for bootrom?

[Daniel-0723]

• 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

 

 

 

 

 

 

 

 

[Amel NASRI]

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