ADCDIGEN=B_0x0, USART1EN=B_0x0, SPI3EN=B_0x0, I2C1EN=B_0x0, SPI1EN=B_0x0, LPUARTEN=B_0x0
APB1ENR register
| SPI1EN | SPI1 enable. 0 (B_0x0): does not enable 1 (B_0x1): enable |
| ADCDIGEN | ADC clock enable for digital part of the ADC block. 0 (B_0x0): does not enable 1 (B_0x1): enable |
| ADCANAEN | ADC clock enable for the analog part of the ADC block. |
| LPUARTEN | LPUART clock enable Set and enable by software. 0 (B_0x0): does not enable 1 (B_0x1): enable |
| USART1EN | USART clock enable Set and enable by software. 0 (B_0x0): does not enable 1 (B_0x1): enable |
| SPI2EN | SPI2 enable |
| SPI3EN | SPI3 clock enable Set and enable by software. 0 (B_0x0): does not enable 1 (B_0x1): enable |
| I2C1EN | I2C1 clock enable Set and enable by software. 0 (B_0x0): does not enable 1 (B_0x1): enable |
| I2C2EN | I2C2 enable. |