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NRF51822-CFAB-R 数据表(PDF) 23 Page - Nordic Semiconductor |
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NRF51822-CFAB-R 数据表(HTML) 23 Page - Nordic Semiconductor |
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23 / 130 page  Page 23 nRF51822 Product Specification v3.3 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 readback, 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 nRF51822-QFAA nRF51822-CEAA nRF51822-CTAA 4 kB 64 nRF51822-QFAB nRF51822-CDAB 4 kB 32 nRF51822-QFAC nRF51822-CFAC nRF51822-CTAC 4 kB 64 |
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