DS2423 Просмотр технического описания (PDF) - Dallas Semiconductor -> Maxim Integrated

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производитель

DS2423

4kbit 1-Wire RAM with Counter

Dallas Semiconductor -> Maxim Integrated 

MEMORY FUNCTION FLOW CHART Figure 7 cont’d

DS2423

From Figure 7

1st Part

55H

N

Copy

Scratchpad

Y

Master TX

1)

TA1 (T7:T0)

Master TX

1)

TA2 (T15:T8)

Master TX

1)

E/S Byte

F0H

Read

Memory

Y

Master TX

TA1 (T7:T0)

To Figure 7

3rd Part

N

1)

Master TX

1)

TA1 (T7:T0)

DS2423 sets Memory

Address = (T15:T0)

Authorization

N

Code Match?

Y

AA = 1

DS2423 Copies Scratchpad

Data to Memory

Master RX Data Byte 1)

from Memory Address

DS2423 Incre-

ments Address

Counter

Y

2)

Master

TX Reset?

N

Master 1)

RX "1"s

N

Copying

Finished

Y

DS2423 TX "0"

Master 1)

RX "1"s

N

Master

TX Reset?

1)

Y

N

End of

Memory?

Y 1)

Master RX "0"s

Master

TX Reset?

2)

Y

N 1)

DS2423 TX "1"

2)

Master

TX Reset?

N

Y

To Figure 7

1st Part

1) To be transmitted or received at Overdrive speed if OD = 1.

2) Reset Pulse to be transmitted at Overdrive speed if OD = 1.

Reset Pulse to be transmitted at normal speed if OD = 0 or if

the DS2423 is to be reset from Overdrive speed to regular

speed.

From Figure 7

3rd Part

10 of 25

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