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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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NRF51422-QFAA-R7 Fiches technique(PDF) 21 Page - Nordic Semiconductor |
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NRF51422-QFAA-R7 Fiches technique(HTML) 21 Page - Nordic Semiconductor |
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21 / 115 page  Page 21 nRF51422 Product Specification v3.1 3.2.1 Code organization Table 4 Code organization 3.2.2 RAM organization RAM is divided into blocks for separate power management which is controlled by the POWER System Block. Each block is divided into two 4 kByte RAM sections with separate RAM AHB slaves. Please see the nRF51 Series Reference Manual for more information. Table 5 RAM organization How to organize the use of the RAM For the best performance we recommend the following use of the RAM AHB slaves (Note that the Crypto consists of CCM, ECB, and AAR modules): • If the Radio and Crypto buffers together are larger in size than one RAM section, the buffers should be separated so the memory used by the Radio is in one RAM section while the memory used by the Crypto is in another RAM section. • The sections used by CODE should not be combined with sections used by the Radio, Crypto, or SPI. • The Stack and Heap should be placed at the top section and should not be combined with sections used by the Radio, Crypto, or SPI. Chip variant Code size Page size No of pages nRF51422-QFAA nRF51422-CEAA 256 kB 1024 byte 256 nRF51422-QFAB nRF51422-CDAB 128 kB 1024 byte 128 nRF51422-QFAC nRF51422-CFAC 256 kB 1024 byte 256 Chip variant RAM size Block Size nRF51422-QFAA nRF51422-CEAA 16 kB Block0 Block1 8 kB 8 kB nRF51422-QFAB nRF51422-CDAB 16 kB Block0 Block1 8 kB 8 kB nRF51422-QFAC nRF51422-CFAC 32 kB Block0 Block1 Block2 Block3 8 kB 8 kB 8 kB 8 kB |
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