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STM32L552CC Datasheet(PDF) 28 Page - STMicroelectronics |
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STM32L552CC Datasheet(HTML) 28 Page - STMicroelectronics |
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28 / 340 page  Functional overview STM32L552xx 28/340 DS12737 Rev 6 3.8.1 TrustZone peripheral classification When the TrustZone security is active, a peripheral can be either Securable or TrustZone- aware type as follows: • Securable: a peripheral is protected by an AHB/APB firewall gate that is controlled from TZSC controller to define security properties. • TrustZone-aware: a peripheral connected directly to AHB or APB bus and is implementing a specific TrustZone behavior such as a subset of registers being secure. The tables below summarize the list of Securable and TrustZone aware peripherals within the system. 2. Different colors highlights the different configurations Pink: Non-secure Green: NSC (non-secure callable) Lighter green: Secure or non-secure or NSC Table 7. Securable peripherals by TZSC Bus Peripheral AHB3 OCTOSPI1 registers FMC registers AHB 2 SDMMC1 RNG ADC AHB1 ICACHE registers TSC CRC APB2 DFSDM1 SAI2 SAI1 TIM17 TIM16 TIM15 USART1 TIM8 SPI1 TIM1 COMP VREFBUF |
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