# External flash pin assignments

Check the GPIO pin mappings for the external flash, depending on your EVK.

> 
> 
> Tab QCC743
> Tab QCC744/QCC748
> 
> | Pin number | Pin name | Main function | Voltage domain | Type | Peripheral function | Description |
> | --- | --- | --- | --- | --- | --- | --- |
> | 9 | GPIO\_10 | HOLD | VDDIO\_1 | DI/DO | Serial Flash\_D3 | Serial Flash Data 3 |
> | 10 | GPIO\_11 | SCLK | VDDIO\_1 | DI/DO | Serial Flash\_CLK | Serial Flash Clock |
> | 11 | GPIO\_12 | SI | VDDIO\_1 | DI/DO | Serial Flash\_D0 | Serial Flash Data 0 |
> | 12 | GPIO\_13 | WP | VDDIO\_1 | DI/DO | Serial Flash\_D2 | Serial Flash Data 2 |
> | 13 | GPIO\_14 | SO | VDDIO\_1 | DI/DO | Serial Flash\_D1 | Serial Flash Data 1 |
> | 14 | GPIO\_15 | CS | VDDIO\_1 | DI/DO | Serial Flash\_CS | Serial Flash Chip Select |
> 
> | Pin number | Pin name | Main function | Voltage domain | Type | Peripheral function | Description |
> | --- | --- | --- | --- | --- | --- | --- |
> | 8 | GPIO\_4 | CS | VDDIO\_1 | DI/DO | Serial Flash\_CS | Serial Flash Chip Select |
> | 9 | GPIO\_5 | SO | VDDIO\_1 | DI/DO | Serial Flash\_D1 | Serial Flash Data 1 |
> | 10 | GPIO\_6 | WP | VDDIO\_1 | DI/DO | Serial Flash\_D2 | Serial Flash Data 2 |
> | 11 | GPIO\_7 | SI | VDDIO\_1 | DI/DO | Serial Flash\_D0 | Serial Flash Data 0 |
> | 12 | GPIO\_8 | SCLK | VDDIO\_1 | DI/DO | Serial Flash\_CLK | Serial Flash Clock |
> | 14 | GPIO\_9 | HOLD | VDDIO\_1 | DI/DO | Serial Flash\_D3 | Serial Flash Data 3 |

Last Published: May 06, 2026

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