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Hi Park Jung Hoon,
The SPI flash used in CYW2070xV3 eval boards is MX25R4035FZUIL0- MX25R4035FZUIL0 Macronix | Integrated Circuits (ICs) | DigiKey which has operation voltage 1.65V - 3.6V.
Therefore, you should be able to use the GD25Q40C as you mentioned in your query. However, I am not sure if we have tested this memory with our chip.