CAT5241JI-00 Catalyst Semiconductor, CAT5241JI-00 Datasheet

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CAT5241JI-00

Manufacturer Part Number
CAT5241JI-00
Description
Quad Digitally Programmable Potentiometers (DPP) with 64 Taps and 2-wire Interface
Manufacturer
Catalyst Semiconductor
Datasheet
The CAT5241 is four Digitally Programmable
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
© 2004 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
R W0
R W1
GND
SDA
R H0
RH 1
R L0
R L1
A 0
A 2
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V CC
R W3
R L3
R H3
A 1
A 3
SCL
R W2
R L2
R H2
1
SDA
SCL
A0
A1
A2
A3
registers is via a 2-wire serial bus (I
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 CAT5241 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.
2-WIRE BUS
INTERFACE
CONTROL
LOGIC
NONVOLATILE
REGISTERS
REGISTERS
CONTROL
WIPER
DATA
R H0
R L0
R
R
H1
L1
R
R
H2
L2
2
C-like). On power-
R
R
H3
Document No. 2011, Rev. J
L3
R
R
R
R
W0
W1
W2
W3
TM

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CAT5241JI-00 Summary of contents

Page 1

... SDA GND 10 © 2004 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice registers is via a 2-wire serial bus (I 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 CAT5241 can be used as a potentiometer two terminal, variable resistor ...

Page 2

R Wiper Terminal for Potentiometer Low Reference Terminal for Potentiometer High Reference Terminal for Potentiometer Device Address, LSB 5 A2 Device Address 6 R Wiper Terminal for ...

Page 3

Temperature Under Bias .................. - +125 C Storage Temperature ........................ - +150 C Voltage on any Pin with (1)(2) Respect to V ................ -2. with Respect to Ground ................ -2.0V to +7.0V ...

Page 4

Over recommended operating conditions unless otherwise stated. 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 ...

Page 5

Over recommended operating conditions unless otherwise stated. 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 ...

Page 6

The following defines the features of the 2-wire 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 clock line is high. ...

Page 7

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 CAT5241. The ...

Page 8

The first byte sent to the CAT5241 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 CAT5241 are fixed at 0101[B] ...

Page 9

The CAT5241 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 of the WCR can be altered in four ways: ...

Page 10

WCR and one of the Data Registers. The WCR controls the position of the wiper. The response of the wiper to this action will be delayed transfer from the WCR (current wiper ...

Page 11

INC/DEC Command Issued SCL SDA R W Voltage Out 11 t WRID Document No. 2011, Rev. J ...

Page 12

Notes: (1) Any write or transfer to the Non-volatile Data Registers is followed by a high voltage cycle after a STOP has been issued. Document No. 2011, Rev. J • • • 12 ...

Page 13

... Notes: (1) The device used in the above example is a CAT5241JI-10-TE13 (SOIC, Industrial Temperature, 10kohm, Tape & Reel) U: TSSOP W: SOIC (Lead free, Halogen free) Y: TSSOP (Lead free, Halogen free) 13 -10 -25: 2.5kohm -10: 10kohm -50: 50kohm -00: 100kohm Document No. 2011, Rev. J ...

Page 14

BSC 0 —8 Document No. 2011, Rev. J 0.2914 (7.40) 0.394 (10.00) 0.2992 (7.60) 0.419 (10.65) 0.5985 (15.20) 0.6141 (15.60) 0.0926 (2.35) 0.1043 (2.65) 0.0040 (0.10) 0.013 (0.33) 0.0118 (0.30) 0.020 (0.51) 0.010 (0.25 0.029 (0.75) ...

Page 15

SEATING PLANE GAUGE PLANE DETAIL SECTION A SYMBOL ...

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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