STM32 F3产品技术培训 17.存储器 系统架构模块.pdf

STM32 F3产品技术培训-17.存储器-系统架构模块ARMlife. augmentedARMulife. augmentedlife. augmentedBus matrx sI-busBsisMatrix-sARM[busCORTEX-M4ARMD-busD-busCortex-M4S-busDMAGPDMA 1DMA1DMAGPDMA 2DMA2它地盛出AHB dedicated to GPID portsICODE64-bit256K日FLASH 256KADG1B ADC2DCODEE4 BitsECODEFlash mermoryAHB dedicated to GPIO portADCs 8 ADC4RCc. Tsc. CRc andACC. TSC. CRC andAHB to0员1and粪PB2AHB to APBl and APB2SRAM4OK B40KBsR点MCEM RAMlife. augmentedBOOT ModeSelectionBoot modeAliasingBOOT1BOOTOUser Flash User Flash is selected asXboot spaceSystem11SystemMemory ismemoryselected as boot space0EmbeddedEmbedded sram isSRAMselected as boot spacelife. augmentedlife. augmentedlife. augmentedMain memory block containing 128 pages of 2Kbyte eachInformation block contains the system memory and optionbytes is divided into two partsSystem Memory8 KB sizecontains the bootloader which is used to reprogram the Flash memory through USART1UsART2 o USBused to boot the device in System memory boot modeprogrammed by ST when the device is manufactured, and protected against unwantedwrite/erase operations8 Option bytes Can be read from the memory location starting from 0x1FFFF800 or fromthe Option byte register(FLASH_ OBR) in the Flash memory interface register area4 for write protection1 for read protection1 for device configurationIWDG HW/SW modeReset when entering STANDBY modeReset when entering stop modeVDDA supervisorBOOTSRAM parity checklife. augmented2 For User data (To store security IDs, etc