X9241AWVIT2C7971 Intersil Corporation, X9241AWVIT2C7971 Datasheet

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X9241AWVIT2C7971

Manufacturer Part Number
X9241AWVIT2C7971
Description
Manufacturer
Intersil Corporation
Datasheet

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X9241AWVIT2C7971
Manufacturer:
MAXIM
Quantity:
7 024
Non-Volatile/Low Power/2-Wire/64 Taps
The X9241A integrates four digitally controlled
potentiometers (XDCP) on a monolithic CMOS integrated
microcircuit.
The digitally controlled potentiometer is implemented using
63 resistive elements in a series array. Between each
element are tap points connected to the wiper terminal
through switches. The position of the wiper on the array is
controlled by the user through the 2-wire bus interface. Each
potentiometer has associated with it a volatile Wiper Counter
Register (WCR) and 4 nonvolatile Data Registers
(DR0:DR3) that can be directly written to and read by the
user. The contents of the WCR controls the position of the
wiper on the resistor array through the switches. Power up
recalls the contents of DR0 to the WCR.
The XDCP can be used as a three-terminal potentiometer or
as a two-terminal variable resistor in a wide variety of
applications including control, parameter adjustments, and
signal processing.
Block Diagram
V
V
SCL
SDA
CC
SS
A0
A1
A2
A3
INTERFACE
CIRCUITRY
CONTROL
AND
DATA
®
8
1
Data Sheet
R0
R2
R0
R2
R1
R3
R1
R3
REGISTER
REGISTER
COUNTER
COUNTER
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005, 2006, 2007. All Rights Reserved
WIPER
WIPER
(WCR)
(WCR)
1-888-INTERSIL or 1-888-468-3774
Quad Digital Controlled Potentionmeters (XDCP™)
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
REGISTER
ARRAY
POT 1
Features
• Four potentiometers in one package
• 2-wire serial interface
• Register oriented format
• Terminal Voltages: +5V, -3.0V
• Cascade resistor arrays
• Low power CMOS
• High Reliability
• 16-bytes of nonvolatile memory
• 3 resistor array values
• Resolution: 64 taps each pot
• 20 Ld plastic DIP, 20 Ld TSSOP and 20 Ld SOIC
• Pb-free available (RoHS compliant)
V
V
V
V
V
V
L0
- Direct read/write/transfer of wiper positions
- Store as many as four positions per potentiometer
- Endurance–100,000 data changes per bit per register
- Register data retention–100 years
- 2kΩ, 10kΩ, 50kΩ or combination
- Cascadable for values of 4kΩ to 200kΩ
packages
H0
W0
H1
L1
W1
/R
/R
/R
/R
/R
/R
L0
August 31, 2007
H0
H1
W0
L1
W1
All other trademarks mentioned are the property of their respective owners.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
R0
R2
R0
R2
R1
R1
R3
R3
REGISTER
REGISTER
COUNTER
COUNTER
WIPER
WIPER
(WCR)
(WCR)
REGISTER
REGISTER
ARRAY
ARRAY
POT 2
POT 3
X9241A
FN8164.6
V
V
V
V
R
V
V
H3
L3
W3
H2
H2
L2
W2
/R
/R
/R
/
/R
/R
L3
H3
L2
W3
W2

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X9241AWVIT2C7971 Summary of contents

Page 1

Data Sheet Non-Volatile/Low Power/2-Wire/64 Taps The X9241A integrates four digitally controlled potentiometers (XDCP monolithic CMOS integrated microcircuit. The digitally controlled potentiometer is implemented using 63 resistive elements in a series array. Between each element are tap points ...

Page 2

Ordering Information PART NUMBER PART MARKING X9241AMP X9241AMP X9241AMPZ (Note) X9241AMPZ X9241AMPI X9241AMPI X9241AMPIZ (Note) X9241AMPIZ X9241AMS* X9241AMS X9241AMSZ* (Note) X9241AMS Z , X9241AMSI* ** X9241AMSI X9241AMSIZ* (Note) X9241AMSI Z X9241AMV X9241AM V X9241AMVZ (Note) X9241AM VZ , X9241AMVI* ** ...

Page 3

Ordering Information (Continued) PART NUMBER PART MARKING X9241AUP X9241AUP X9241AUPZ (Note) X9241AUPZ X9241AUPI X9241AUPI X9241AUPIZ (Note) X9241AUPIZ X9241AUS X9241AUS X9241AUSZ* (Note) X9241AUS Z , X9241AUSI* ** X9241AUSI X9241AUSIZ* (Note) X9241AUSI Z X9241AUV* X9241AU V X9241AUVZ* (Note) X9241AU VZ , X9241AUVI* ...

Page 4

Principles of Operation The X9241A is a highly integrated microcircuit incorporating four resistor arrays, their associated registers and counters and the serial interface logic providing direct communication between the host and the XDCP potentiometers. Serial Interface The X9241A supports a ...

Page 5

Flow 1. ACK Polling Sequence NONVOLATILE WRITE COMMAND COMPLETED ENTER ACK POLLING ISSUE START ISSUE SLAVE ADDRESS ACK NO RETURNED? YES NO FURTHER OPERATION? YES ISSUE INSTRUCTION PROCEED Instruction Structure The next byte sent to the X9241A contains the instruction ...

Page 6

SCL SDA SCL SDA FIGURE 5. INCREMENT/DECREMENT INSTRUCTION SEQUENCE INC/DEC CMD ISSUED SCL SDA V /R ...

Page 7

INSTRUCTION FORMAT INSTRUCTION XFR Data Register to WCR XFR WCR Data Register Global XFR Data Register to WCR Global ...

Page 8

Detailed Operation All four XDCP potentiometers share the serial interface and share a common architecture. Each potentiometer is comprised of a resistor array, a Wiper Counter Register and four Data Registers. A detailed discussion of the register organization and array ...

Page 9

Cascade Mode The X9241A provides a mechanism for cascading the arrays. That is, the sixty-three resistor elements of one array may be cascaded (linked) with the resistor elements of an adjacent array. The the higher order array ...

Page 10

Absolute Maximum Ratings Supply Voltage (V ) Limits CC X9241A ...

Page 11

Endurance and Data Retention PARAMETER Minimum endurance Data retention Capacitance SYMBOL C (Note 7) Input/output capacitance (SDA) I/O C (Note 7) Input capacitance (A0, A1, A2, A3 and SCL) IN Power-up Timing SYMBOL t (Note 8) Power-up to initiation of ...

Page 12

Equivalent AC Test Circuit 5V 1533Ω SDA OUTPUT Circuit #3 SPICE Macro Model MACRO MODEL R TOTAL 15pF 25pF R W SCL t SU:STA SDA (DATA IN) AC Electrical Specifications (Over recommended operating conditions ...

Page 13

AC Electrical Specifications (Over recommended operating conditions unless otherwise stated). (Continued) SYMBOL t Data in setup time SU:DAT t Data in hold time HD:DAT t SCL LOW to SDA data out valid AA t Data out hold time DH t ...

Page 14

Thin Shrink Small Outline Package Family (TSSOP (N/2)+ (N/2) B TOP VIEW e C SEATING PLANE b 0.10 0. LEADS SIDE VIEW SEE DETAIL “X” c END VIEW ...

Page 15

Small Outline Package Family (SO PIN #1 I.D. MARK 0.010 SEATING PLANE 0.004 C 0.010 MDP0027 SMALL OUTLINE PACKAGE FAMILY (SO) SYMBOL SO-8 SO-14 ...

Page 16

... Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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