X9259UB24 datasheet(11/25 Pages) XICOR

Part #	X9259UB24

Description	Quad Digitally-Controlled (XDCP) Potentiometers

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Manufacturer	XICOR [Xicor Inc.]

Direct Link	http://www.xicor.com

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11 / 25 page

X9259

Characteristics subject to change without notice.

11 of 25

REV 1.2.3 4/30/02

www.xicor.com

Figure 3. Two-Byte Instruction Sequence

Figure 4. Three-Byte Instruction Sequence 2-Wire Interface

Figure 5. Increment/Decrement Instruction Sequence 2-Wire Interface

Figure 6. Increment/Decrement Timing Limits

S

T

A

R

T

01

0

1

A2

A0

A

C

K

I2

I1

I0

RB RA P1

A

C

K

SCL

SDA

S

T

O

P

ID3 ID2 ID1 ID0

P0

Device ID

External

Instruction

Opcode

Address

Register

Address

Pot/WCR

Address

A1

A3

I3

I2

I1

I0

RB RA

ID3 ID2 ID1 ID0

Device ID

External

Instruction

Opcode

Address

Register

Address

Pot/WCR

Address

WCR[7:0]

or

Data Register D[7:0]

S

T

A

R

T

0

101

A2

A1

A0

A

C

K

P1 P0 A

C

K

SCL

SDA

S

T

O

P

A

C

K

D7

D6 D5 D4 D3 D2

D1 D0

A3

I3

I2

I1

I0

ID3 ID2 ID1 ID0

Device ID

External

Instruction

Opcode

Address

Register

Address

Pot/WCR

Address

S

T

A

R

T

0101

A2 A1 A0

A

C

K

RA P1 P0

A

C

K

SCL

SDA

S

T

O

P

I

N

C

1

I

N

C

2

I

N

C

n

D

E

C

1

D

E

C

n

RB

A3

SCL

SDA

RW

INC/DEC

CMD

Issued

Voltage Out

tWRID

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