cat5411 Catalyst Semiconductor, cat5411 Datasheet

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cat5411

Manufacturer Part Number
cat5411
Description
Dual Digitally Programmable Potentiometers Dpp? With 64 Taps And Spi Interface
Manufacturer
Catalyst Semiconductor
Datasheet

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Part Number:
cat5411WI10
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ON Semiconductor
Quantity:
135
Dual Digitally Programmable Potentiometers (DPP™)
with 64 Taps and SPI Interface
FEATURES
PIN CONFIGURATION
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
GND 12
Two linear-taper digitally programmable
potentiometers
64 resistor taps per potentiometer
End to end resistance 2.5kΩ, 10kΩ, 50kΩ or
100kΩ
Potentiometer control and memory access via
SPI interface: Mode (0, 0) and (1, 1)
Low wiper resistance, typically 80
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
24-lead SOIC and 24-lead TSSOP
Industrial temperature ranges
R
¯¯¯
¯¯¯
WP
R
V
R
CS
R
R
R
A
W0
SI
W1
CC
H0
H1
L0
L1
1
(top view)
10
11
SOIC (W)
1
2
3
4
5
6
7
8
9
5411
CAT
24 NC
23 NC
22 NC
21 NC
20 A
19 SO
18 HOLD
17 SCK
16 NC
15 NC
14 NC
13 NC
¯¯¯¯¯
0
¯¯¯¯¯ 12
HOLD
GND
SCK 11
R
R
R
NC
NC
NC
NC 10
A
SI
W1
H1
L1
1
TSSOP (Y)
(top view)
1
2
3
4
5
6
7
8
9
5411
CAT
24 WP
23
22 R
21 R
20 R
19 V
18 NC
17 NC
16 NC
15 NC
14 A
13 SO
¯¯¯
¯¯¯
CS
W0
CC
0
H0
L0
1
DESCRIPTION
The
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 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 two potentiometers is
automatically loaded into its respective wiper control
register.
The CAT5411 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
SCK
For Ordering Information details, see page 15.
CS
SO
WP
A0
A1
SI
CAT5411
INTERFACE
CONTROL
SPI BUS
LOGIC
is
two
NONVOLATILE
REGISTERS
REGISTERS
CONTROL
WIPER
Digitally
DATA
CAT5411
Doc. No. MD-2114 Rev. I
Programmable
R
R
H0
L0
R
R
H1
L1
R
R
W0
W1

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cat5411 Summary of contents

Page 1

... On power-up, the contents of the first data register (DR0) for each of the two potentiometers is automatically loaded into its respective wiper control register. The CAT5411 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

... SO: Serial Output SO is the serial data output pin. This pin is used to transfer data out of the CAT5411. During a read cycle, data is shifted out on the falling edge of the serial clock. SCK: Serial Clock SCK is the serial clock pin. This pin is used to synchronize the communication between the microcontroller and the CAT5411 ...

Page 3

... DEVICE OPERATION The CAT5411 is two resistor arrays integrated with SPI serial interface logic, four 6-bit wiper control registers and eight 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 ...

Page 4

... CAT5411 (1) ABSOLUTE MAXIMUM RATINGS Parameters Ratings Temperature Under Bias -55 to +125 Storage Temperature -65 to +150 Range Voltage to any Pins with -2 (2) (3) Respect with Respect to GND -2.0 to +7.0 CC Package Power Dissipa- tion Capability (T = 25°C) A Lead Soldering Temperature (10s) Wiper Current POTENTIOMETER CHARACTERISTICS Over recommended operating conditions unless otherwise stated ...

Page 5

... GND GND to V OUT CC = 3.0V 25˚ 1.0 MHz Min ¯¯¯ , HOLD ¯¯¯¯¯ stable until the specified operation can be initiated CAT5411 Min Max 0.4 = +5.0V (unless otherwise noted). CC ...

Page 6

... CAT5411 ELECTRICAL CHARACTERISTICS Over recommended operating conditions unless otherwise stated. Symbol Parameter t Data Setup Time SU t Data Hold Time H t SCK High Time WH t SCK Low Time WL f Clock Frequency SCK ¯¯¯¯¯ to Output Low Z t HOLD LZ (1) ...

Page 7

... Timing Figure 2: HOLD CS SCK HOLD SO © Catalyst Semiconductor, Inc. Characteristics subject to change without notice HIGH IMPEDANCE 7 CAT5411 t t CSH DIS HI Doc. No. MD-2114 Rev ...

Page 8

... The two least significant bits in the slave address byte A0, are the internal slave address and must match the physical device address which is defined by the state of the input pins for the CAT5411 to successfully continue the command sequence. Only the device which slave address matches the incoming device address sent by the master executes the instruction ...

Page 9

... The Wiper Control Register is a volatile register that loses its contents when the CAT5411 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 4. These instructions transfer data between the host/processor and the CAT5411; 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 DATA INSTRUCTION DATA CAT5411 t WRL ¯¯¯ CS ¯¯¯ CS ¯¯¯ CS High Voltage ¯¯¯ CS Write Cycle ¯¯¯ ...

Page 12

... CAT5411 INSTRUCTION FORMAT (CONTINUED) Global Transfer Data Register (DR) to Wiper Control Register (WCR) DEVICE ADDRESS ¯¯¯ CS Global Transfer Wiper Control Register (WCR) to Data Register (DR) DEVICE ADDRESS ¯¯¯ CS Transfer Wiper Control Register (WCR) to Data Register (DR) ...

Page 13

... Complies with JEDEC 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 CAT5411 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-2114 Rev. I ...

Page 14

... CAT5411 (1)(2) TSSOP 24-LEAD (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 are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-153. Doc. No. MD-2114 Rev θ1 14 SYMBOL MIN ...

Page 15

... CAT5411YI-50 CAT5411YI-00 Notes: (1) 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 CAT5411WI-10-T1 (SOIC, Industrial Temperature, 10kΩ, Tape & Reel, 1000). © Catalyst Semiconductor, Inc. Characteristics subject to change without notice (1) Suffix ...

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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