PUPD3=B_0x0
GPIO port H pull-up/pull-down register
PUPD3 | Port H configuration I/O pin 3 These bits are written by software to configure the I/O pull-up or pull-down Access can be protected by GPIOH SEC3. 0 (B_0x0): No pull-up, pull-down 1 (B_0x1): Pull-up 2 (B_0x2): Pull-down |