pin function selection in power down mode register 1
| PB00_WAKEUP_EN | Control GPIOB as Wakeup source. |
| PB01_WAKEUP_EN | no description available |
| PB02_WAKEUP_EN | no description available |
| PA04_32K_OE | 32K clock output enable. When this bit is set to 1 PA04 will output 32k clock. At this time PIN_CTRL register is not effective to control this IO’s function. |
| PA05_XTAL_OE | XTAL clock output enable. When this bit is set to 1 PA05 will output XTAL clock. At this time PIN_CTRL register is not effective to control this IO’s function. |
| PA10_32K_OE | 32K clock output enable. When this bit is set to 1 PA10 (GPIO10) will output 32k clock. At this time PIN_CTRL register is not effective to control this IO’s function. |
| PA11_XTAL_OE | XTAL clock output enable. When this bit is set to 1 PA11 will output XTAL clock. At this time PIN_CTRL register is not effective to control this IO’s function. |
| PA18_32K_OE | 32K clock output enable. When this bit is set to 1 PA18 will output 32k clock. At this time PIN_CTRL register is not effective to control this IO’s function. |
| PA19_XTAL_OE | XTAL clock output enable. When this bit is set to 1 PA19 will output XTAL clock. At this time PIN_CTRL register is not effective to control this IO’s function. |
| PA24_32K_OE | 32K clock output enable. When this bit is set to 1 PA24 will output 32k clock. At this time PIN_CTRL register is not effective to control this IO’s function. |
| PA25_XTAL_OE | XTAL clock output enable. When this bit is set to 1 PA25 will output XTAL clock. At this time PIN_CTRL register is not effective to control this IO’s function. |
| PDM_IO_SEL | pin status selection in power down mode |