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X9241 데이터시트(PDF) 1 Page - Xicor Inc.

부품명 X9241
상세설명  Quad E2POT??Nonvolatile Digital Potentiometer
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제조업체  XICOR [Xicor Inc.]
홈페이지  http://www.xicor.com
Logo XICOR - Xicor Inc.

X9241 데이터시트(HTML) 1 Page - Xicor Inc.

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X9241
1
Quad E2POTNonvolatile Digital Potentiometer
© Xicor, Inc. 1994, 1995, 1996 Patents Pending
Characteristics subject to change without notice
3864-2.7 7/1/96 T0/C3/D3 NS
FEATURES
Four E2POTs in One Package
Two-Wire Serial Interface
Register Oriented Format
—Directly Write Wiper Position
—Read Wiper Position
—Store as Many as Four Positions per Pot
Instruction Format
—Quick Transfer of Register Contents to
Resistor Array
—Cascade Resistor Arrays
Low Power CMOS
Direct Write Cell
—Endurance - 100,000 Data Changes per Register
—Register Data Retention - 100 years
16 Bytes of E2PROM memory
3 Resistor Array Values
—2K
to 50KMask Programmable
—Cascadable For Values of 500
to 200K
Resolution: 64 Taps each Pot
20-Lead Plastic DIP, 20-Lead TSSOP and
20-Lead SOIC Packages
X9241
DESCRIPTION
The X9241 integrates four nonvolatile E2POT digitally
controlled potentiometers on a monolithic CMOS micro-
circuit.
The X9241 contains four resistor arrays, each com-
posed of 63 resistive elements. Between each element
and at either end are tap points accessible to the wiper
elements. The position of the wiper element on the array
is controlled by the user through the two-wire serial bus
interface.
Each resistor array has associated with it a wiper counter
register and four 8-bit data registers that can be directly
written and read by the user. The contents of the wiper
counter register control the position of the wiper on the
resistor array.
The data register may be read or written by the user. The
contents of the data registers can be transferred to the
wiper counter register to position the wiper. The current
wiper position can be transferred to any one of its
associated data registers.
The arrays may be cascaded to form resistive elements
with 127, 190 or 253 taps.
FUNCTIONAL DIAGRAM
Terminal Voltage
±5V, 64 Taps
APPLICATION NOTES AND DEVELOPMENT SYSTEM
A V AILABLE
AN20 • AN42–48 • AN50–53 • AN73 • XK9241
3864 ILL F07.1
R0 R1
R2 R3
WIPER
COUNTER
REGISTER
(WCR)
RESISTOR
ARRAY
POT 1
VH1
VL1
VW1
R0 R1
R2 R3
WIPER
COUNTER
REGISTER
(WCR)
R0 R1
R2 R3
WIPER
COUNTER
REGISTER
(WCR)
RESISTOR
ARRAY
POT 2
VH2
VL2
VW2
R0 R1
R2 R3
WIPER
COUNTER
REGISTER
(WCR)
RESISTOR
ARRAY
POT 3
VH3
VL3
VW3
INTERFACE
AND
CONTROL
CIRCUITRY
SCL
SDA
A0
A1
A2
A3
VH0
VL0
VW0
DATA
8


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