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TSC80C51-25AB Scheda tecnica(PDF) 8 Page - TEMIC Semiconductors |
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TSC80C51-25AB Scheda tecnica(HTML) 8 Page - TEMIC Semiconductors |
8 / 19 page TSC80C31/80C51 Rev. E (14 Jan.97) 8 MATRA MHS TSC80C31/80C51 with Secret TAG TEMIC offers special 64-bit identifier called “SECRET TAG” on the microcontroller chip. The Secret Tag option is available on both ROMless and masked microcontrollers. The Secret Tag feature allows serialization of each microcontroller for identification of a specific equipment. A unique number per device is implemented in the chip during manufacturing process. The serial number is a 64-bit binary value which is contained and addressable in the Special Function Registers (SFR) area. This Secret Tag option can be read-out by a software routine and thus enables the user to do an individual identity check per device. This routine is implemented inside the microcontroller ROM memory in case of masked version which can be kept secret (and then the value of the Secret Tag also) by using a ROM Encryption. For further information, please refer to the application note (ANM031) available upon request. |
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