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X9250US24I Datasheet(PDF) 7 Page - Xicor Inc.

Part # X9250US24I
Description  Quad Digitally Controlled Potentiometers (XDCP)
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Manufacturer  XICOR [Xicor Inc.]
Direct Link  http://www.xicor.com
Logo XICOR - Xicor Inc.

X9250US24I Datasheet(HTML) 7 Page - Xicor Inc.

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X9250
Characteristics subject to change without notice.
7 of 21
REV 1.1.5 1/31/03
www.xicor.com
Figure 8. Increment/Decrement Timing Limits
Table 1. Instruction Set
Instruction
Instruction Set
Operation
I3
I2
I1
I0
R1
R0
P1
P0
Read Wiper Counter
Register
10
0
1
0
0
P1
P0
Read the contents of the Wiper Counter
Register pointed to by P1-P0
Write Wiper Counter
Register
10
1
0
0
0
P1
P0
Write new value to the Wiper Counter
Register pointed to by P1-P0
Read Data Register
1
0
1
1
R1
R0
P1
P0
Read the contents of the Data Register
pointed to by P1-P0 and R1–R0
Write Data Register
1
1
0
0
R1
R0
P1
P0
Write new value to the Data Register pointed
to by P1-P0 and R1–R0
XFR Data Register to
Wiper Counter Register
11
0
1
R1
R0
P1
P0
Transfer the contents of the Data Register
pointed to by R1–R0 to the Wiper Counter
Register pointed to by P1-P0
XFR Wiper Counter
Register to Data Register
11
1
0
R1
R0
P1
P0
Transfer the contents of the Wiper Counter
Register pointed to by P1-P0 to the Register
pointed to by R1–R0
Global XFR Data Register
to Wiper Counter Register
00
0
1
R1
R0
0
0
Transfer the contents of the Data Registers
pointed to by R1–R0 of all four pots to their
respective Wiper Counter Register
Global XFR Wiper Counter
Register to Data Register
10
0
0
R1
R0
0
0
Transfer the contents of all Wiper Counter
Registers to their respective data Registers
pointed to by R1–R0 of all four pots
Increment/Decrement
Wiper Counter Register
00
1
0
0
0
P1
P0
Enable Increment/decrement of the Wiper
Counter Register pointed to by P1-P0
Read Status (WIP bit)
0
1
0
1
0
0
0
1
Read the status of the internal write cycle,
by checking the WIP bit.
SCK
SI
VW/RW
INC/DEC CMD Issued
tWRID
Voltage Out


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