STM32H755 FMC NE, NWE multiple signal inquiry

[mjung.1]

STM32H755's FMC NE and NWE signals are different from the data sheet.

STM32H755 is communicating with SRAM.

Communication was performed by setting the data size to 1 using the HAL_SRAM_Write_16b function.

The figure showing the signals of NE1 and NWE through an oscilloscope is shown below.

Is it normal for the NE1 signal and the NWE signal to toggle multiple times?

Now when I run STM32F765 with the same code, the NE1 and NWE signals toggle only once.

This phenomenon is the same in STM32H757I-EVAL.

Why do NE and NWE appear multiple times?

[waclawek.jan]

Did you remove the picture?

Instead of picture I see:

1 of the attached file is no longer available

JW

[mjung.1]

I re-upload picture.