STM32W108C8

STM32W108C8
Serial interfaces
9 Serial interfaces
9.1 Functional description
The STM32W108C8 has two serial controllers, SC1 and SC2, which provide several options
for full-duplex synchronous and asynchronous serial communications.
● SPI (Serial Peripheral Interface), master or slave
● I 2 C (Inter-Integrated Circuit), master only
● UART (Universal Asynchronous Receiver/Transmitter), SC1 only
● Receive and transmit FIFOs and DMA channels, SPI and UART modes
Receive and transmit FIFOs allow faster data speeds using byte-at-a-time interrupts. For the
highest SPI and UART speeds, dedicated receive and transmit DMA channels reduce CPU
loading and extend the allowable time to service a serial controller interrupt. Polled
operation is also possible using direct access to the serial data registers. Figure 8 shows the
components of the serial controllers.
Note:
The notation SCx means that either SC1 or SC2 may be substituted to form the name of a
specific register or field within a register.
Doc ID 018587 Rev 2 72/215