DS1992L-F5 Просмотр технического описания (PDF) - Dallas Semiconductor -> Maxim Integrated

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производитель

DS1992L-F5

1kb/4kb Memory iButton

Dallas Semiconductor -> Maxim Integrated 

Figure 6. MEMORY FUNCTIONS FLOW CHART (Continued)

DS1992/DS1993

From Figure 6

55H

Copy

N

First Part

Scratchpad

?

Y

Bus Master TX

TA1 (T7:T0)

Bus Master TX

TA2 (T15:T8)

Bus Master TX

E/S Byte

Auth-

rization

N

Code Match

?

Y

AA = 1

DS199X TX "1"s

DS199X Copies

Scratchpad Data

To Memory

DS199X TX "0"s

N Bus Master

TX Reset

?

Y

F0H

Y

Read Memory

N?

Bus Master TX

TA1 (T7:T0)

Bus Master TX

TA2 (T15:T8)

DS199X sets Memory

Address = (T15:T0)

Master RX Data

Byte From

Memory Address

DS199X

Increments

Address Counter

Y

Bus Master

TX Reset

?N

Bus Master N

TX Reset

?

Y

N Memory

Address

= 21Dh ?

Y

Bus Master

RX "1"s

To Figure 6

First Part

8of 8

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