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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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NRF51422-QFAC-R7 데이터시트(PDF) 22 Page - Nordic Semiconductor |
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NRF51422-QFAC-R7 데이터시트(HTML) 22 Page - Nordic Semiconductor |
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22 / 115 page  Page 22 nRF51422 Product Specification v3.1 Table 6 and Table 7 shows how memory allocated to different functions can be distributed between RAM sections for parallel access. There is a table for chip variants with 16 kB or 32 kB RAM. Table 6 16 kB RAM variants Table 7 32 kB RAM variants 3.3 Memory Protection Unit (MPU) The memory protection unit can be configured to protect all flash memory on the device from read-back, or to protect blocks of flash from over-write or erase. Table 8 MPU flash blocks RAM Blocks/Sections Radio buffers Crypto buffers SPIS buffers CPU Stack/Heap CODE Global variables Block0 RAM0 x x x RAM1 x x Block1 RAM2 x x RAM3 x x x RAM Blocks/Sections Radio buffers Crypto buffers SPIS buffers CPU Stack/Heap CODE Global variables Block0 RAM0 x (x) x RAM1 (x) x x Block1 RAM2 x x RAM3 x x Block2 RAM4 x x RAM5 x x Block3 RAM6 x x RAM7 x x x Chip variant Flash block size Number of protectable Flash blocks nRF51422-QFAA nRF51422-CEAA 4 kB 64 nRF51422-QFAB nRF51422-CDAB 4 kB 32 nRF51422-QFAC nRF51422-CFAC 4 kB 64 |
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