cat5409 Catalyst Semiconductor, cat5409 Datasheet

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cat5409

Manufacturer Part Number
cat5409
Description
Quad Digitally Programmable Potentiometers Dpp? With 64 Taps And I?c Interface
Manufacturer
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 cat5409

cat5409 Summary of contents

Page 1

... The Write Protection (WP inadvertent programming of the data register. The CAT5409 can be used as a potentiometer two terminal, variable resistor intended for circuit level or system level adjustments in a wide variety of applications. ...

Page 2

... No Connect DEVICE OPERATION The CAT5409 is four resistor arrays integrated with I²C serial interface logic, four 6-bit wiper control registers and sixteen 6-bit, non-volatile memory data registers. Each resistor array contains 63 separate resistive elements connected in series. The physical ends of each array are equivalent to the fixed terminals of a mechanical ...

Page 3

... W(n)(actual) (n)(expected) ( W(n+1) W(n) + LSB (4) POT (4) (4) ( 50kΩ POT +2.0V for periods of less than 20ns CAT5409 Ratings Units -55 to +125 ºC -65 to +150 ° -2.0 to +7.0 V 1.0 W 300 ºC ±12 mA Ratings Units +2 -40 to +85 °C Min ...

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 Input High Voltage IH V Output Low Voltage (V OL1 (1) CAPACITANCE T = 25º ...

Page 5

... MIL-STD-883, Test Method 3015 JEDEC Standard 17 t HIGH LOW t LOW t HD:DAT t HD:STA t SU:DAT ACK t WR STOP CONDITION is stable until the specified operation can be initiated CAT5409 Max Units 5 ms Min Max Units 1,000,000 Cycles/Byte 100 Years 2000 V 100 mA t SU:STO t BUF ...

Page 6

... When the CAT5409 READ mode it transmits 8 bits of data, releases the SDA line, and monitors the line for an acknowledge. Once it receives this acknowledge, the CAT5409 will continue to transmit data ...

Page 7

... CAT5409 initiates the internal write cycle. ACK polling can be initiated immediately. This involves issuing the start condition followed by the slave address. If the CAT5409 is still busy with the write operation, no ACK will be returned. If the CAT5409 has completed the write operation, an ACK will be returned and the host can then proceed with the next instruction operation ...

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. These bits for the CAT5409 are fixed at 0101[B] (refer to Table 1). ...

Page 9

... The Wiper Control Register is a volatile register that loses its contents when the CAT5409 is powered- down. Although the register is automatically loaded with the value in DR0 upon power-up, this may be different from the value present at power-down. ...

Page 10

... Four instructions require a two-byte sequence to complete, as illustrated in Figure 7. These instructions transfer data between the host/processor and the CAT5409; either between the host and one of the data registers or directly between the host and the Wiper Control Register. These instructions are: — XFR Data Register to Wiper Control Register This transfers the contents of one specified Data Register to the associated Wiper Control Register ...

Page 11

... INSTRUCTION INSTRUCTION INSTRUCTION CAT5409 t WRID A DATA DATA DATA ...

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 ADDRESSES Transfer Wiper Control Register (WCR) to Data Register (DR) ...

Page 13

... Compiles with JEDEC standard MS-013. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice SYMBOL MIN A 2.35 A1 0.10 A2 2. 0.20 D 15.20 E 10. 0.25 L 0.40 θ 0° θ1 5° θ END VIEW 13 CAT5409 NOM MAX 2.65 0.30 2.55 0.51 0.33 15.40 10.51 7.60 1.27 BSC 0.75 1.27 8° 15° θ1 θ1 c Doc. No. MD-2010 Rev. K ...

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 MO-153. Doc. No. MD-2010 Rev θ1 14 SYMBOL ...

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

... Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. ...

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