cat5419 Catalyst Semiconductor, cat5419 Datasheet

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cat5419

Manufacturer Part Number
cat5419
Description
Dual Digitally Programmable Potentiometers Dpp? With 64 Taps And 2-wire Interface
Manufacturer
Catalyst Semiconductor
Datasheet
Dual Digitally Programmable Potentiometers (DPP™)
with 64 Taps and 2-wire Interface
FEATURES
PIN CONFIGURATION
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Two linear-taper digital potentiometers
64 resistor taps per potentiometer
End to end resistance 2.5kΩ, 10kΩ, 50kΩ or
100kΩ
Potentiometer control and memory access via
2-wire Interface (I
Low wiper resistance, typically 80
Four non-volatile wiper settings for each
potentiometer
Recall of 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
GND 12
SDA
R
¯¯¯
R
V
WP
R
R
R
R
A2
W0
A
W1
CC
H0
H1
L0
L1
1
(top view)
SOIC (W)
10
11
1
2
3
4
5
6
7
8
9
5419
CAT
24 NC
23 NC
22 NC
21 NC
20 A
19 NC
18 A
17 SCL
16 NC
15 NC
14 NC
13 NC
2
0
3
C like)
GND
SDA
SCL 11
R
R
R
NC
NC
NC
NC 10
A
W1
A
H1
L1
1
3
TSSOP (Y)
(top view)
12
1
2
3
4
5
6
7
8
9
5419
CAT
24 WP
23 A
22 R
21 R
20 R
19 V
18 NC
17 NC
16 NC
15 NC
14 A
13 NC
¯¯¯
2
W0
CC
0
H0
L0
1
SDA
SCL
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 regis-
ters is via a 2-wire serial bus (I
the contents of the first data register (DR0) for each of
the two potentiometers is automatically loaded into its
respective wiper control registers (WCR).
The Write Protection (WP
inadvertent programming of the data register.
The CAT5419 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
WP
For Ordering Information details, see page 15.
A0
A1
A2
A3
CAT5419
2-WIRE BUS
INTERFACE
CONTROL
LOGIC
is
two
NONVOLATILE
REGISTERS
REGISTERS
¯¯¯ ) pin protects against
CONTROL
WIPER
DATA
Digitally
2
C-like). On power-up,
CAT5419
Doc. No. MD-2115 Rev. H
R
R
Programmable
H0
L0
R
R
H1
L1
R
R
W0
W1

Related parts for cat5419

cat5419 Summary of contents

Page 1

... The Write Protection (WP inadvertent programming of the data register. The CAT5419 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

... DEVICE OPERATION The CAT5419 is two resistor arrays integrated with 2wire 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 CC Pin ( W(n)(actual) (n)(expected) (8) R -[R ] W(n+1) W(n)+LSB (4) POT (4) (4) ( 50kΩ POT +2.0V for periods of less than 20 ns CAT5419 Units ºC º ºC mA Min Typ Max 100 50 10 2.5 ± ± 300 = 5V 80 150 GND V CC TBD 1 ...

Page 4

... CAT5419 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) PIN CAPACITANCE ...

Page 5

... JEDEC Standard 17 is stable until the specified operation can be initiated HIGH LOW t LOW t HD:DAT t HD:STA t SU:DAT ACK t WR STOP CONDITION START BIT 5 CAT5419 Max 5 Min Typ Max Units 1,000,000 Cycles/Byte 100 Years 2000 Volts 100 mA t SU:STO t BUF START ...

Page 6

... When the CAT5419 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 CAT5419 will continue to transmit data ...

Page 7

... Characteristics subject to change without notice internal write cycle. ACK polling can be initiated immediately. This involves issuing the start condition followed by the slave address. If the CAT5419 is still busy with the write operation, no ACK will be returned. If the CAT5419 has completed the write operation, an ACK will be returned and the host can then proceed with the next instruction operation ...

Page 8

... INSTRUCTIONS AND REGISTER DESCRIPTION INSTRUCTIONS Slave Address Byte The first byte sent to the CAT5419 from the master/ processor is called the Slave/DPP Address Byte. The most significant four bits of the slave address are a device type identifier. These bits for the CAT5419 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 CAT5419 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 CAT5419; 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

... K A INSTRUCTION INSTRUCTION INSTRUCTION CAT5419 t WRID A DATA DATA DATA ...

Page 12

... CAT5419 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

... 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 CAT5419 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-2115 Rev. H ...

Page 14

... CAT5419 (1)(2) TSSOP 24-Lead 4.4mm (Y) e TOP VIEW SIDE VIEW 2HFor current Tape and Reel information, download the PDF file from: Notes: (1) All dimensions in millimeters. Angles in degrees. (2) Complies with JEDEC MO-153. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice b E1 ...

Page 15

... CAT5419YI-10 CAT5419YI-50 CAT5419YI-00 Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is Matte-Tin. (3) This device used in the above example is a CAT5419WI-00-T1 (SOIC, Industrial Temperature, 100kΩ, Tape & Reel). © Catalyst Semiconductor, Inc. Characteristics subject to change without notice (1) I -00 ...

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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