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X9428WPI Datasheet(PDF) 10 Page - Xicor Inc.

Part # X9428WPI
Description  Single Digitally Controlled Potentiometer
PDF  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  XICOR [Xicor Inc.]
Direct Link  http://www.xicor.com
Logo XICOR - Xicor Inc.

X9428WPI Datasheet(HTML) 10 Page - Xicor Inc.

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X9428
Characteristics subject to change without notice.
10 of 20
REV 1.1.5 7/8/03
www.xicor.com
XFR Wiper Counter Register (WCR) to Data Register (DR)
Increment/Decrement Wiper Counter Register (WCR)
S
T
A
R
T
device type
identifier
device
addresses
S
A
C
K
instruction
opcode
register
addresses
S
A
C
K
S
T
O
P
HIGH-VOLTAGE
WRITE CYCLE
0101
A
3
A
2
0
A
0
1110
R
1
R
0
00
S
T
A
R
T
device type
identifier
device
addresses
S
A
C
K
instruction
opcode
S
A
C
K
increment/decrement
(sent by master on SDA)
S
T
O
P
0101
A
3
A
2
0
A
0
00100000
I/
D
I/
D
....
I/
D
I/
D
SYMBOL TABLE
Guidelines for Calculating Typical Values of Bus
Pull-Up Resistors
WAVEFORM
INPUTS
OUTPUTS
Must be
steady
Will be
steady
May change
from Low to
High
Will change
from Low to
High
May change
from High to
Low
Will change
from High to
Low
Don’t Care:
Changes
Allowed
Changing:
State Not
Known
N/A
Center Line
is High
Impedance
120
100
80
40
60
20
20
40
60
80 100 120
0
0
Bus Capacitance (pF)
Min.
Resistance
Max.
Resistance
RMAX =
CBUS
tR
RMIN =
IOL MIN
VCC MAX
=1.8K
Ω



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