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CAT5221JI-00TE13 Datasheet(PDF) 1 Page - Catalyst Semiconductor

No. de pieza CAT5221JI-00TE13
Descripción Electrónicos  Dual Digitally Programmable Potentiometers (DPP) with 64 Taps and 2-wire Interface
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Fabricante Electrónico  CATALYST [Catalyst Semiconductor]
Página de inicio  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT5221JI-00TE13 Datasheet(HTML) 1 Page - Catalyst Semiconductor

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DESCRIPTION
The CAT5221 is two Digitally Programmable
Potentiometers (DPPs™) integrated with control logic
and 16 bytes of NVRAM memory. Each DPP consists of
a series of 63 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 6-bit control register
(WCR) independently controls the wiper tap switches for
each DPP. Associated with each wiper control register
are four 6-bit non-volatile memory data registers (DR)
used for storing up to four wiper settings. Writing to the
CAT5221
Dual Digitally Programmable Potentiometers (DPP™)
with 64 Taps and 2-wire Interface
FEATURES
s Two linear-taper digitally programmable
potentiometers
s 64 resistor taps per potentiometer
s End to end resistance 2.5k
, 10k, 50kor 100k
s Potentiometer control and memory access via
2-wire interface (I2C like)
s Low wiper resistance, typically 80
s Nonvolatile memory storage for up to four wiper
settings for each potentiometer
s Automatic recall of saved wiper settings at
power up
s 2.5 to 6.0 volt operation
s Standby current less than 1
µA
s 1,000,000 nonvolatile WRITE cycles
s 100 year nonvolatile memory data retention
s 20-lead SOIC and TSSOP packages
s Industrial temperature ranges
PIN CONFIGURATION
FUNCTIONAL DIAGRAM
© 2004 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Document No. 2113, Rev. I
wiper control register or any of the non-volatile data
registers is via a 2-wire serial bus (I2C-like). 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 register (WCR).
The CAT5221 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.
ALO
GEN FR
TM
LEAD FREE
W1
W0
H0
H1
R
R
L0
L1
R
R
WIPER
CONTROL
REGISTERS
NONVOLATILE
DATA
REGISTERS
2-WIRE BUS
INTERFACE
CONTROL
LOGIC
SCL
SDA
A0
A1
A2
A3
R
R
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
CAT
5221
RW0
RL0
RH0
A0
A2
RW1
RL1
RH1
SDA
GND
VCC
NC
NC
NC
A1
A3
SCL
NC
NC
NC
SOIC Package (J, W)
TSSOP Package (U, Y)


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