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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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VNF1248F датащи(PDF) 36 Page - STMicroelectronics |
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VNF1248F датащи(HTML) 36 Page - STMicroelectronics |
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36 / 79 page  Figure 12. NVM write operation Unlocked NVM-mapped user registers write UNLOCK bit write (CR#3) User key write (CR#4) User sector write programming (CR#4) NVM write device operation User operation status read (SR#2) Completed Not completed Aborted Yes Yes No No For what concerns NVM read execution, the steps are the following: 1. User reset (by writing 0) target RAM register fields (optional) 2. The user writes, through SPI, the required 2-steps access sequence 3. User writes, through SPI, sector address, access type and start command in the unlocked dedicated register (CR#4) 4. Digital control logic provides controls and address to NVM interface IP 5. NVM IP interface handles NVM memory IP reading procedure 6. NVM IP interface notifies reading phase completion to digital logic 7. Digital control logic maps sector data output to respective RAM register fields 8. User reads (and clear), through SPI, RAM register field reporting NVM operation status The user reads through SPI, RAM register fields corresponding to addressed device parameters. Figure 13. NVM read operation Unlocked UNLOCK bit write (CR#3) User key write (CR#4) User sector read programming (CR#4) NVM read device operation User operation status read (SR#2) Completed Not completed Aborted Yes Yes No No NVM-mapped user registers clear (opt.) NVM-mapped user registers read VNF1248F Non-volatile memory (NVM) customer programming DS14109 - Rev 7 page 36/79 |
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