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AS7000 Datasheet(PDF) 82 Page - ams AG |
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AS7000 Datasheet(HTML) 82 Page - ams AG |
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82 / 92 page  Page 82 ams Datasheet Document Feedback [v1-12] 2018-Feb-26 AS7000 − Detailed Description Figure 114: CCU_RETENTION The CCU_RETENTION register is the only register that is not affected by powerdown, Only a power cycle will reset these bits. 0xfc: CCU_RETENTION Field Name Rst Type Description 30 enable_swd 1 RW Enable SWD interface on GPIO7/8 (overrides any gpio7_ func/gpio8_func setting). 31 securitybit 0 WS_SC securitybit, to disable access through the SWD interface in the final product. The bit can only be written to 1, not reset. If enabled by the factory or in EEPROM, the bootloader sets this bit before booting the user software. Therefore the image inside the EEPROM is protected against external access. |
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