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CAT5259WI00 Datasheet(PDF) 1 Page - ON Semiconductor

Part # CAT5259WI00
Description  Quad Digitally Programmable Potentiometers (DPP?? with 256 Taps and I짼C Interface
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CAT5259WI00 Datasheet(HTML) 1 Page - ON Semiconductor

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CAT5259
© 2009 SCILLC. All rights reserved.
1
Doc. No. MD-2000 Rev. J
Characteristics subject to change without notice
NONVOLATILE
DATA
REGISTERS
CONTROL LOGIC
WIPER CONTROL
REGISTERS
I²C BUS
INTERFACE
RW0
RW1
RW2
RW3
RL0
A0
A1
SCL
SDA
A2
A3
RL1
RL2
RL3
RH0
RH1
RH2
RH3
WP
Quad Digitally Programmable Potentiometers
(DPP™) with 256 Taps and I²C Interface
FEATURES
Four linear taper digitally programmable
potentiometers
256 resistor taps per potentiometer
End to end resistance 50 kΩ or 100 kΩ
Potentiometer control and memory access via
I²C interface
Low wiper resistance, typically 100 Ω
Nonvolatile memory storage for up to four
wiper settings for each potentiometer
Automatic recall of saved wiper settings at
power up
2.5 to 6.0 volt operation
Standby current less than 1 µA
1,000,000 nonvolatile WRITE cycles
100 year nonvolatile memory data retention
24-lead SOIC and 24-lead TSSOP packages
Industrial temperature range
For Ordering Information details, see page 15.
PIN CONFIGURATION
SOIC (W)
TSSOP (Y)
NC
1
24 A3
A0
2
23 SCL
RW3 3
22 RL2
RH3 4
21 RH2
RL3 5
20 RW2
NC
6
19 NC
VCC 7
18 GND
RLO 8
17 RW1
RHO 9
16 RH1
RWO 10
15 RL1
A2 11
14 A1
12
13 SDA
DESCRIPTION
The CAT5259 is four digitally programmable poten–
tiometers (DPPs™) integrated with control logic and
16 bytes of NVRAM memory. Each DPP consists of a
series of resistive elements connected between two
externally accessible end points. The tap points
between each resistive element are connected to the
wiper outputs with CMOS switches. A separate 8-bit
control register (WCR) independently controls the
wiper tap switches for each DPP. Associated with
each wiper control register are four 8-bit non-volatile
memory data registers (DR) used for storing up to four
wiper settings. Writing to the wiper control register or
any of the non-volatile data registers is via a I²C serial
bus. On power-up, the contents of the first data
register (DR0) for each of the four potentiometers
is automatically loaded into its respective wiper
control registers.
The CAT5259 can be used as a potentiometer or as a
two terminal, variable resistor. It is intended for circuit
level or system level adjustments in a wide variety of
applications. It is available in the 0ºC to 70ºC
commercial and -40ºC to 85ºC industrial operating
temperature ranges and offered in a 24-lead SOIC
and TSSOP package.
FUNCTIONAL DIAGRAM


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