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ST STM32WL5 Series User Manual

ST STM32WL5 Series
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RM0453 Rev 1 11/1461
RM0453 Contents
43
7.4.34 RCC CPU2 AHB2 peripheral clock enable register
(RCC_C2AHB2ENR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
7.4.35 RCC CPU2 AHB3 peripheral clock enable register
(RCC_C2AHB3ENR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
7.4.36 RCC CPU2 APB1 peripheral clock enable register 1
(RCC_C2APB1ENR1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
7.4.37 RCC CPU2 APB1 peripheral clock enable register 2
(RCC_C2APB1ENR2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
7.4.38 RCC CPU2 APB2 peripheral clock enable register
(RCC_C2APB2ENR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
7.4.39 RCC CPU2 APB3 peripheral clock enable register
(RCC_C2APB3ENR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
7.4.40 RCC CPU2 AHB1 peripheral clock enable in Sleep mode register
(RCC_C2AHB1SMENR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
7.4.41 RCC CPU2 AHB2 peripheral clock enable in Sleep mode register
(RCC_C2AHB2SMENR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
7.4.42 RCC CPU2 AHB3 peripheral clock enable in Sleep mode register
(RCC_C2AHB3SMENR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
7.4.43 RCC CPU2 APB1 peripheral clock enable in Sleep mode register 1
(RCC_C2APB1SMENR1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
7.4.44 RCC CPU2 APB1 peripheral clock enable in Sleep mode register 2
(RCC_C2APB1SMENR2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
7.4.45 RCC CPU2 APB2 peripheral clock enable in Sleep mode register
(RCC_C2APB2SMENR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
7.4.46 RCC CPU2 APB3 peripheral clock enable in Sleep mode register
(RCC_C2APB3SMENR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
7.4.47 RCC register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
8 Hardware semaphore (HSEM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
8.2 Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
8.3 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366
8.3.1 HSEM block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366
8.3.2 HSEM internal signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366
8.3.3 HSEM lock procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366
8.3.4 HSEM write/read/read lock register address . . . . . . . . . . . . . . . . . . . . 368
8.3.5 HSEM unlock procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368
8.3.6 HSEM COREID semaphore clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369
8.3.7 HSEM interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369
8.3.8 AHB bus master ID verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371

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ST STM32WL5 Series Specifications

General IconGeneral
BrandST
ModelSTM32WL5 Series
CategoryMicrocontrollers
LanguageEnglish

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