APB1 peripheral reset register
| TIM2RST | Timer 2 reset |
| TIM3RST | Timer 3 reset |
| TIM6RST | Timer 6 reset |
| TIM7RST | Timer 7 reset |
| WWDGRST | Window watchdog reset |
| SPI2RST | SPI2 reset |
| USART2RST | USART2 reset |
| LPUART1RST | LPUART1 reset |
| USART4RST | USART4 reset |
| USART5RST | USART5 reset |
| I2C1RST | I2C1 reset |
| I2C2RST | I2C2 reset |
| CRCRST | CRC reset |
| PWRRST | Power interface reset |
| I2C3 | I2C3 reset |
| LPTIM1RST | Low power timer reset |