CAT5409WI-00 CATALYST [Catalyst Semiconductor], CAT5409WI-00 Datasheet

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CAT5409WI-00

Manufacturer Part Number
CAT5409WI-00
Description
Manufacturer
CATALYST [Catalyst Semiconductor]
Datasheet
Quad Digitally Programmable Potentiometers
(DPP™) with 64 Taps and I²C Interface
FEATURES
PIN CONFIGURATION
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
For Ordering Information details, see page 15.
GND
SDA
R
R
SCL
R
R
R
R
Four linear taper digitally programmable
potentiometers
64 resistor taps per potentiometer
End to end resistance 2.5kΩ, 10kΩ, 50kΩ or
100kΩ
I²C interface
Low wiper resistance, typically 80Ω
Four non-volatile wiper settings for each
potentiometer
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
24-lead SOIC and 24-lead TSSOP
Write protection for data register
NC
W1
W2
A
H1
H2
A
L1
L2
1
3
10
11
12
1
2
3
4
5
6
7
8
9
SOIC (W)
24
23
22
21
20
19
18
17
16
15
14
13
WP
A
R
R
R
V
NC
R
R
R
A
NC
2
CC
0
W0
H0
L0
L3
H3
W3
GND
R
SDA
R
V
R
R
R
R
WP
CC
W0
W1
A
A
H0
H1
L0
L1
2
1
10
12
11
1
2
3
4
5
6
7
8
9
TSSOP (Y)
24
23
22
21
20
19
18
17
16
15
14
13
NC
R
R
R
A
NC
A
SCL
R
R
R
NC
L3
H3
W3
0
3
L2
H2
W2
1
SDA
SCL
WP
A
A
A
A
0
1
2
3
DESCRIPTION
The
Potentiometers (DPP™) integrated with control logic
and 16 bytes of NVRAM memory.
A separate 6-bit control register (WCR) independently
controls the wiper tap position 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 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 register (WCR).
The Write Protection (WP
inadvertent programming of the data register.
The CAT5409 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.
FUNCTIONAL DIAGRAM
CONTROL LOGIC
CAT5409
INTERFACE
I²C BUS
is
WIPER CONTROL
NONVOLATILE
REGISTERS
REGISTERS
four
DATA
¯¯¯ ) pin protects against
Digitally
R
R
H0
L0
CAT5409
Doc. No. MD-2010 Rev. K
Programmable
R
R
H1
L1
R
R
H2
L2
R
R
H3
L3
R
R
R
R
W0
W1
W2
W3

Related parts for CAT5409WI-00

CAT5409WI-00 Summary of contents

Page 1

Quad Digitally Programmable Potentiometers (DPP™) with 64 Taps and I²C Interface FEATURES Four linear taper digitally programmable potentiometers 64 resistor taps per potentiometer End to end resistance 2.5kΩ, 10kΩ, 50kΩ or 100kΩ I²C interface Low wiper resistance, typically 80Ω Four ...

Page 2

CAT5409 PIN DESCRIPTIONS Pin# Pin# (SOIC) (TSSOP) Name Function Supply Voltage CC Low Reference Terminal for Potentiometer 0 High Reference Terminal for Potentiometer 0 Wiper Terminal for 22 4 ...

Page 3

ABSOLUTE MAXIMUM RATINGS Parameters Temperature Under Bias Storage Temperature Voltage on Any Pin with Respect with Respect to Ground CC Package Power Dissipation Capability (T Lead Soldering Temperature (10sec) Wiper Current RECOMMENDED OPERATING CONDITIONS Parameters V CC ...

Page 4

CAT5409 D.C. OPERATING CHARACTERISTICS Over recommended operating conditions unless otherwise stated. Symbol Parameter I Power Supply Current CC I Standby Current ( Input Leakage Current LI I Output Leakage Current LO V Input Low Voltage IL V ...

Page 5

WRITE CYCLE LIMITS Symbol Parameter t Write Cycle Time WR The write cycle is the time from a valid stop condition of a write sequence to the end of the internal program/erase cycle. During the write cycle, the bus interface ...

Page 6

CAT5409 SERIAL BUS PROTOCOL The following defines the features of the I²C bus protocol: (1) Data transfer may be initiated only when the bus is not busy. (2) During a data transfer, the data line must remain stable whenever the ...

Page 7

WRITE OPERATIONS In the Write mode, the Master device sends the START condition and the slave address information to the Slave device. After the Slave generates an acknowledge, the Master sends the instruction byte that defines the requested operation of ...

Page 8

CAT5409 INSTRUCTION AND REGISTER DESCRIPTION SLAVE ADDRESS BYTE The first byte sent to the CAT5409 from the master/ processor is called the Slave/DPP Address Byte. The most significant four bits of the Device Type address are a device type identifier. ...

Page 9

WIPER CONTROL AND DATA REGISTERS Wiper Control Register (WCR) The CAT5409 contains four 6-bit Wiper Control Registers, one for each potentiometer. The Wiper Control Register output is decoded to select one of 64 switches along its resistor array. The contents ...

Page 10

CAT5409 position Data Register is a write to non-volatile memory and takes a minimum of t transfer can occur between one of the four poten- tiometers and one of its associated registers; or the transfer can occur between ...

Page 11

Figure 10. Increment/Decrement Timing Limits INC/DEC Command Issued SCL SDA R W INSTRUCTION FORMAT Read Wiper Control Register (WCR) S DEVICE ADDRESSES Write Wiper Control Register (WCR) S DEVICE ...

Page 12

CAT5409 INSTRUCTION FORMAT (continued) Global Transfer Data Register (DR) to Wiper Control Register (WCR) S DEVICE ADDRESSES Global Transfer Wiper Control Register (WCR) to Data Register (DR) S DEVICE ...

Page 13

PACKAGE OUTLINE DRAWINGS (1)(2) SOIC 24-Lead 300mils ( PIN#1 IDENTIFICATION TOP VIEW D A SIDE VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions in millimeters. Angle in degrees. (2) ...

Page 14

CAT5409 (1)(2) TSSOP 24-Lead 4.4mm (Y) e TOP VIEW SIDE VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions in millimeters. Angle in degrees. (2) Compiles with JEDEC standard ...

Page 15

... All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is Matte-Tin. (3) The device used in the above example is a CAT5409WI-00-T1 (SOIC, Industrial Temperature, 100kΩ, Tape & Reel, 1,000/Reel). (4) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office. ...

Page 16

REVISION HISTORY Date Rev. Reason 10/8/2003 H Updated Features Updated Description Changed Preliminary designation to Final Eliminated Commercial temp range in all areas 04/29/06 I ¯¯¯ Pin Description Updated WP Updated notes in Absolute Max Ratings and Potentiometer Characteristics Deleted ...

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