STM32W108HB datasheet(5/278 Pages) STMICROELECTRONICS

5 / 278 page

STM32W108HB STM32W108CC STM32W108CB STM32W108CZ

Contents

Doc ID 16252 Rev 14

5/278

9.5.2

Constructing frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

9.5.3

Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

9.6

Universal asynchronous receiver/transmitter (UART) . . . . . . . . . . . . . . 118

9.6.1

Setup and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

9.6.2

FIFOs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

9.6.3

RTS/CTS flow control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

9.6.4

DMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

9.6.5

Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

9.7

Direct memory access (DMA) channels . . . . . . . . . . . . . . . . . . . . . . . . . 122

9.8

Serial controller common registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

9.8.1

Serial controller interrupt status register (SCx_ISR) . . . . . . . . . . . . . . 124

9.8.2

Serial controller interrupt enable register (SCx_IER) . . . . . . . . . . . . . . 126

9.8.3

Serial controller interrupt control register 1 (SCx_ICR) . . . . . . . . . . . . 128

9.8.4

Serial controller data register (SCx_DR) . . . . . . . . . . . . . . . . . . . . . . . 129

9.8.5

Serial controller control register 2 (SCx_CR) . . . . . . . . . . . . . . . . . . . . 129

9.8.6

Serial controller clock rate register 1 (SCx_CRR1) . . . . . . . . . . . . . . . 130

9.8.7

Serial controller clock rate register 2 (SCx_CRR2) . . . . . . . . . . . . . . . 130

9.9

Serial controller: Serial peripheral interface (SPI) registers . . . . . . . . . . 131

9.9.1

Serial controller SPI status register (SCx_SPISR) . . . . . . . . . . . . . . . 131

9.9.2

Serial controller SPI control register (SCx_SPICR) . . . . . . . . . . . . . . . 132

9.10

Serial controller: Inter-integrated circuit (I2C) registers . . . . . . . . . . . . . 133

9.10.1

Serial controller I2C status register (SCx_I2CSR) . . . . . . . . . . . . . . . . 133

9.10.2

Serial controller I2C control register 1 (SCx_I2CCR1) . . . . . . . . . . . . 134

9.10.3

Serial controller I2C control register 2 (SCx_I2CCR2) . . . . . . . . . . . . 135

9.11

Serial controller: Universal asynchronous receiver/

transmitter (UART) registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

9.11.1

Serial controller UART status register (SC1_UARTSR) . . . . . . . . . . . . 136

9.11.2

Serial controller UART control register (SC1_UARTCR) . . . . . . . . . . . 137

9.11.3

Serial controller UART baud rate register 1 (SC1_UARTBRR1) . . . . . 138

9.11.4

Serial controller UART baud rate register 2 (SC1_UARTBRR2) . . . . . 139

9.12

Serial controller: Direct memory access (DMA) registers . . . . . . . . . . . 140

9.12.1

Serial controller receive DMA begin address channel A register

(SCx_DMARXBEGADDAR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

9.12.2

Serial controller receive DMA end address channel A register

(SCx_DMARXENDADDAR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

9.12.3

Serial controller receive DMA begin address channel B register

(SCx_ DMARXBEGADDBR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

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