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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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STM32G474PBY3TR 数据表(PDF) 20 Page - STMicroelectronics |
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STM32G474PBY3TR 数据表(HTML) 20 Page - STMicroelectronics |
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20 / 236 page  Functional overview STM32G474xB STM32G474xC STM32G474xE 20/236 DS12288 Rev 5 3.5 Embedded SRAM STM32G474xB/xC/xE devices feature 128 Kbytes of embedded SRAM. This SRAM is split into three blocks: • 80 Kbytes mapped at address 0x2000 0000 (SRAM1). The CM4 can access the SRAM1 through the System Bus (or through the I-Code/D-Code buses when boot from SRAM1 is selected or when physical remap is selected by SYSCFG_MEMRMP register). The first 32 Kbyte of SRAM1 support hardware parity check. • 16 Kbytes mapped at address 0x2001 4000 (SRAM2). The CM4 can access the SRAM2 through the System bus. SRAM2 can be retained in standby modes. • 32 Kbytes mapped at address 0x1000 0000 (CCM SRAM). It is accessed by the CPU through I-Code/D-Code bus for maximum performance. It is also aliased at 0x2001 8000 address to be accessed by all masters (CPU, DMA1, DMA2) through SBUS contiguously to SRAM1 and SRAM2. The CCM SRAM supports hardware parity check and can be write-protected with 1 Kbyte granularity. • The memory can be accessed in read/write at max CPU clock speed with 0 wait states. |
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