Rainbow-electronics DS1805 Manuel d'utilisateur télécharger pdf (Page 10)

DS1805

Addressable Digital Potentiometer

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

Figure 5. 2-Wire Write Protocols

Figure 6. Timing Diagram

ACK

STOP

MSB

OPTIONAL

DATA

BYTE

LSB

POT-1

MSB

START

ACK

STOP

CONTROL

BYTE

LSB MSB

COMMAND

BYTE

LSB MSB

DATA

BYTE

LSB

POT-1

R/W = 0

MSB

WRITE POT-1

WRITE REGISTER-0 AND POT-1 (SAME VALUE)

START

ACK

CONTROL

BYTE

LSB MSB

COMMAND

BYTE

LSB MSB

DATA

BYTE

LSB

REG-0

R/W = 0

0101A2A1 A0 0

101010 01

101010 10

MSB

START

ACK

STOP

CONTROL

BYTE

LSB MSB

COMMAND

BYTE

LSB MSB

DATA

BYTE

LSB

REG-0/POT-1 VALUE

R/W = 0

101011 11

SDA

SCL

HD:STA

LOW

HIGH

BUF

HD:DAT

SU:DAT

REPEATED

START

SU:STA

HD:STA

SU:STO

STOP START

1 2 3 4 5 6 7 8 9 10

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Rainbow-electronics DS1805 Manuel d'utilisateur Page 10

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