MODE15=B_0x0
GPIO port A mode register
| MODE0 | Port configuration I/O pin 0 |
| MODE1 | Port configuration I/O pin 1 |
| MODE2 | Port configuration I/O pin 2 |
| MODE3 | Port configuration I/O pin 3 |
| MODE5 | Port configuration I/O pin 5 |
| MODE6 | Port configuration I/O pin 6 |
| MODE7 | Port configuration I/O pin 7 |
| MODE8 | Port configuration I/O pin 8 |
| MODE9 | Port configuration I/O pin 9 |
| MODE10 | Port configuration I/O pin 10 |
| MODE11 | Port configuration I/O pin 11 |
| MODE12 | Port configuration I/O pin 12 |
| MODE13 | Port configuration I/O pin 13 |
| MODE14 | Port configuration I/O pin 14 |
| MODE15 | Port configuration I/O pin 15 These bits are written by software to configure the I/O mode. Access can be protected by GPIOA SEC15. 0 (B_0x0): Input mode 1 (B_0x1): General purpose output mode 2 (B_0x2): Alternate function mode 3 (B_0x3): Analog mode (reset state) |