OTP sector double protection for a simultaneous operation flash memory
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United States of America Patent
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-
Dec 9, 2003
Issued Date -
N/A
app pub date -
Oct 19, 1999
filing date -
Oct 19, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A simultaneous operation flash memory capable of providing double protection to An OTP sector. The preferred simultaneous operation flash memory comprises an OTP write-protect CAM, which is in a programmed state if the OTP sector is write-protected. In addition, the preferred simultaneous flash memory further includes an OTP sector lock CAM that is electrically connected with the OTP write-protect CAM. The OTP sector lock CAM is used to lock the OTP write-protect CAM in the programmed state, which, in turn, will designate the OTP sector as read only.
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