EVAL-AD5144DBZ View Datasheet(PDF) - Analog Devices

Part Name

Description

MFG CO.

EVAL-AD5144DBZ

Quad Channel, 128-/256-Position, I2C/SPI, Nonvolatile Digital Potentiometer

Analog Devices 

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AD5124/AD5144/AD5144A

Data Sheet

Table 14. Reduced Commands Operation Truth Table

Control

Command Bits[DB15:DB12]

Number C3 C2 C1 C0

Address

Bits[DB11:DB8]1

Data Bits[DB7:DB0]1

A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0

Operation

0

0 0 0 0 X X X X X X X X X X X X NOP: do nothing.

1

0 0 0 1 0 0 A1 A0 D7 D6 D5 D4 D3 D2 D1 D02 Write contents of serial register

data to RDAC

2

0 0 1 0 0 0 A1 A0 D7 D6 D5 D4 D3 D2 D1 D02 Write contents of serial register

data to input register

3

0 0 1 1 X 0 A1 A0 X X X X X X D1 D0 Read back contents

D1

D0

Data

0

1

EEPROM

1

1

RDAC

9

0 1 1 1 0 0 A1 A0 X X X X X X X 1 Copy RDAC register to EEPROM

10

0 1 1 1 0 0 A1 A0 X X X X X X X 0 Copy EEPROM into RDAC

14

1 0 1 1 X X X X X X X X X X X X Software reset

15

1 1 0 0 A3 0 A1 A0 X X X X X X X D0 Software shutdown

D0

Condition

0

Normal mode

1

Shutdown mode

1 X = don’t care.

2 D0 = don’t care for AD5124.

Table 15. Reduced Address Bits Table

A3

A2

A1

A0

Channel

1

0

X1

X1

All channels

0

0

0

0

RDAC1

0

0

0

1

RDAC2

0

0

1

0

RDAC3

0

0

1

1

RDAC4

Stored Channel Memory

Not applicable

RDAC1

RDAC2

RDAC3

RDAC4

1 X = don’t care.

Rev. C | Page 26 of 36

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