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CAT5251 Fiches technique(PDF) 1 Page - Catalyst Semiconductor

No de pièce CAT5251
Description  Quad Digitally Programmable Potentiometer (DPP™) with 256 Taps and SPI Interface
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Fabricant  CATALYST [Catalyst Semiconductor]
Site Internet  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT5251 Fiches technique(HTML) 1 Page - Catalyst Semiconductor

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CAT5251
© Catalyst Semiconductor, Inc.
1
Doc. No. MD-2017 Rev. F
Characteristics subject to change without notice
Quad Digitally Programmable Potentiometer (DPP™) with
256 Taps and SPI Interface
FEATURES
Four linear-taper digitally programmable
potentiometers
254 resistor taps per potentiometer
End to end resistance 50kΩ or 100kΩ
Potentiometer control and memory access via
SPI interface
Low wiper resistance, typically 100Ω
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 1µA
1,000,000 nonvolatile WRITE cycles
100 year nonvolatile memory data retention
SOIC 24-lead and TSSOP 24-lead
Industrial temperature range
For Ordering Information details, see page 14.
PIN CONFIGURATION
SOIC 24-Lead (W)
TSSOP 24-Lead (Y)
SO
1
24 HOLD
¯¯¯¯¯
A0
2
23 SCK
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
CS
¯¯¯ 11
14 A1
WP
¯¯¯ 12
13 SI
CAT
5251
DESCRIPTION
The
CAT5251
is
four
Digitally
Programmable
Potentiometers (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 SPI 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
register.
The CAT5251 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 -40°C to 85°C
industrial operating temperature range and offered in
a 24-lead SOIC and TSSOP package.
FUNCTIONAL DIAGRAM
RW0
RW1
RH0
A0
A1
WP
HOLD
RH1
RL0
RL1
NONVOLATILE
DATA
REGISTERS
WIPER
CONTROL
REGISTERS
CONTROL
LOGIC
SPI BUS
INTERFACE
RW2
RH2
RL2
RW3
RH3
RL3
SCK
SI
CS
SO


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Numéro de composants électroniques

No de pièceDescriptionHtml ViewFabricant
CAT525_0711 Quad Digitally Programmable Potentiometer DPP™ with 256 Taps and Microwire Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT524_07 Quad Digitally Programmable Potentiometer DPP™ with 256 Taps and Microwire Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT523_07 Dual Digitally Programmable Potentiometer DPP™ with 256 Taps and Microwire Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT5401_07 Quad Digitally Programmable Potentiometers DPP™ with 64 Taps and SPI Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT5241_08 Quad Digitally Programmable Potentiometer DPP™ with 64 Taps and I²C Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT5132_08 16 Volt Digitally Programmable Potentiometer DPP™ with 128 Taps and I2C Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT5269_07 Dual Digitally Programmable Potentiometers DPP™ with 256 Taps and 2-wire Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT5221_08 Dual Digitally Programmable Potentiometer DPP™ with 64 Taps and I2C Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT5133_08 16 Volt Digitally Programmable Potentiometer DPPTM with 128 Taps and an Increment Decrement Interface 1  2  3  4  5  More Catalyst Semiconductor
CAT5419_07 Dual Digitally Programmable Potentiometers DPP™ with 64 Taps and 2-wire Interface 1  2  3  4  5  More Catalyst Semiconductor

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