Rainbow-electronics DS2422 Manual do Utilizador descarregar pdf (Página 4)

DS2422/DS2423

4 of 25

The highest valued bit of the E/S register, called AA or Authorization Accepted, acts as a flag to indicate

that the data stored in the scratchpad has already been copied to the target memory address. Writing data

to the scratchpad clears this flag.

HIERARCHICAL STRUCTURE FOR 1-WIRE PROTOCOL Figure 2

64-BIT LASERED ROM Figure 3

MSB LSB

8-BIT CRC CODE 48-BIT SERIAL NUMBER

8-BIT FAMILY CODE

(1CH = DS2422,

1DH = DS2423)

MSB LSB MSB LSB MSB LSB

1-WIRE CRC GENERATOR Figure 4

1 2 3 4 5 6 7 8 9 ... 24 25

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Rainbow-electronics DS2422 Manual do Utilizador Página 4