STM32W108CBU6 STMICROELECTRONICS [STMicroelectronics], STM32W108CBU6 Datasheet - Page 63

• Manufacturer Part Number: STM32W108CBU6
• Description: High-performance, IEEE 802.15.4 wireless system-on-chip
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

STM32W108CB, STM32W108HB
7.1
Configuration
Before using a serial controller, it should be configured and initialized as follows:
1.
2.
3.
4.
Table 9.
1. used if RTS/CTS hardware flow control is enabled.
Table 10.
SPI - Master
SPI - Slave
TWI - Master
UART
SPI - Master
SPI - Slave
TWI - Master
Interface
Interface
Set up the parameters specific to the operating mode (master/slave for SPI, baud rate
for UART, etc.).
Configure the GPIO pins used by the serial controller as shown in
Section 6.1.2: Configuration on page 47
DMA, set up the DMA and buffers. This is described fully in
registers on page
If using interrupts, select edge- or level-triggered interrupts with the SCx_INTMODE
register, enable the desired second-level interrupt sources in the INT_SCxCFG
register, and finally enable the top-level SCx interrupt in the NVIC.
Write the serial interface operating mode - SPI, TWI, or UART - to the SCx_MODE
register.
SC1 GPIO usage and configuration
SC2 GPIO usage and configuration
SC1MOSI alternate
output (push-pull)
SC1MISO alternate
output (push-pull)
SC1SDA alternate
output (open-drain)
TXD alternate
output (push-pull)
SC2MOSI
Alternate Output
(push-pull)
SC2MOSI
Alternate Output
(push-pull)
(not used)
PB1
PA0
72.
Doc ID 16252 Rev 2
SC1MISO input
SC1MOSI input
SC1SCL alternate
output (open-drain)
RXD input
SC2MISO Input
SC2MISO Input
SC2SDA Alternate
Output (open-drain)
PB2
PA1
shows how to configure GPIO pins."If using
SC1SCLK alternate
output (push-pull);
special SCLK mode
SC1SCLK input
(not used)
nCTS input
SC2SCLK
Alternate Output
(push-pull), special
SCLK mode
SC2SCLK Input
SC2SCL Alternate
Output (open-drain)
PB3
PA2
Section 7.7: DMA channel
(1)
Table 9
(not used)
SC1nSSEL input
(not used)
nRTS alternate
output (push-pull)
(1)
(not used)
SC2nSSEL Input
(not used)
Serial interfaces
and
PB4
PA3
Table
63/179
10.