DS1205S 데이터 시트보기 (PDF) - Dallas Semiconductor -> Maxim Integrated

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DS1205S

MultiKey Chip

Dallas Semiconductor -> Maxim Integrated 

DS1205S

GET SECURE DATA Figure 7

WRITE SET SECURE DATA

IN COMMAND WORD (SPECIFY

WHICH SECURE PARTITION AND

STARTING BYTE ADDRESS)

READ I.D. FIELD FROM

SECURE PARTITION

(64 BITS)

SET SCRATCHPAD Figure 8

WRITE SET SCRATCHPAD

IN COMMAND WORD

WRITE DATA BITS TO

DS1205 (STARTING ADDRESS

SPECIFIED IN

COMMAND WORD)

WRITE 64 BITS OF DATA

TO DS1205

NO

IS BYTE 63

WRITTEN YET?

NO

IS DATA =

SECURITY

MATCH?

YES

OUTPUT RANDOM

DATA

YES

NO

HAS RST LINE

GONE LOW?

YES

OUTPUT SECURE DATA

FIELD CONTENTS*

TERMINATE TRANSACTION

TERMINATE TRANSACTION

*Data is read from the DS1205S

beginning at the specified address

and continuing until either Bit 511 is

read or the RST line is brought low.

021798 6/17

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