I was exploring 16MB flash for a custom ESP8266 board. I have come across flash chips which do not implement "write protect" and "hold" for "Dual SPI" mode.
For example
Winbond W25Q128FW implements WP and Hold.
Winbond W25Q128JV does not implement WP and Hold.
The ESP8266 reference designs use dual SPI mode with "write protect" and "hold".
Do I need to stick with the ones which implement WP and Hold?
Or, can I ignore the WP and Hold outputs of ESP8266 without any consequences?
Note: I have attached the excerpt from datasheet(s) showing features and pins.