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PM0020 Fiches technique(PDF) 43 Page - STMicroelectronics

No de pièce PM0020
Description  STR91xFA Flash programming manual
PDF  87 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM0020 Fiches technique(HTML) 43 Page - STMicroelectronics

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PM00020
Security status
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3
Security status
It is possible to erase the chip after security is enabled. However, this is possible only when
doing full chip erase, in which all sectors are selected. Partial erase of some, but not all,
sectors are not possible after security is enabled.
4
Checksum calculation
Checksum calculation is done with individual bit binary addition with carry. Data beyond the
eighth bit is dropped.
Always mask out or set to zero on the followings:
●
Security bit
●
OTP_Lock bit
●
OTP sector



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