Rainbow-electronics MAX66140 Manual de usuario Pagina 1

General DescriptionThe MAX66140 combines 1024 bits of user EEPROMwith secure hash algorithm (SHA-1) challenge-and-response authentication (ISO/IEC 101

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selected state and transition to the ready or the quietstate upon receiving the Reset to Ready command sentin any address mode or the Stay Quiet comma

MAX66140Request FlagsThe command descriptions on the subsequent pages begin with a byte called request flags. The ISO 15693 stan-dard defines two form

MAX66140ISO 15693-Compliant Secure Memory ______________________________________________________________________________________ 15Request Flags, Inve

MAX66140Request Data for the Inventory CommandResponse Data for the Inventory Command (No Error)This response is generated only if a slave qualifies t

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MAX66140Error IndicationDepending on the complexity of a function, various error conditions can occur. In case of an error, the response to arequest b

Detailed Command DescriptionsIn the request data graphics of this section, the UID field is shaded to indicate that the inclusion of the UID dependson

CRC GenerationThe MAX66140 uses two different types of CRCs. OneCRC is an 8-bit type. The equivalent polynomial func-tion of this CRC is X8+ X5+ X4+ 1

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MAX66140ISO 15693-Compliant Secure Memory Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxi

Detailed DescriptionThe MAX66140 combines 1024 bits of user EEPROM,128 bits of user and control registers, a 64-bit UID, one64-bit secret, a 512-bit S

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ISO 15693 CommunicationConceptThe communication between master and MAX66140(slave) is based on the exchange of data packets. Themaster initiates every

MAX66140full details including graphics of the data codingschemes and SOF/EOF timing, refer to ISO 15693-2,Sections 7.2, 7.3, and 8.The path from mast

MAX66140ISO 15693-Compliant Secure Memory _______________________________________________________________________________________ 9Figure 9. Downlink

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MAX66140Figure 13. Uplink Coding, Two Subcarriers Case (High Data-Rate Timing)TRANSMITTING A ZERO484.28kHz, ~ 18.58μs423.75kHz, ~ 18.88μs~ 37.46μsTRAN