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CAT5269UI-25TE13 Datasheet(PDF) 2 Page - Catalyst Semiconductor

No. de pieza CAT5269UI-25TE13
Descripción Electrónicos  Dual Digitally Programmable Potentiometers (DPP) with 64 Taps and 2-wire Interface
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Fabricante Electrónico  CATALYST [Catalyst Semiconductor]
Página de inicio  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT5269UI-25TE13 Datasheet(HTML) 2 Page - Catalyst Semiconductor

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CAT5419
Document No. 2115, Rev. F
PIN DESCRIPTION
Pin
Pin
Pin
(TSSOP)
(SOIC)
(BGA) Name
Function
19
1
C1
VCC
Supply Voltage
20
2
B1
RL0
Low Reference Terminal
for Potentiometer 0
21
3
C2
RH0
High Reference Terminal
for Potentiometer 0
22
4
A1
RW0
Wiper Terminal for Potentiometer 0
23
5
A2
A2
Device Address
24
6
B2
WP
Write Protection
1
7
B3
SDA
Serial Data Input/Output
2
8
A3
A1
Device Address
39
A4
RL1
Low Reference Terminal
for Potentiometer 1
410
C3
RH1
High Reference Terminal
for Potentiometer 1
511
B4
RW1
Wiper Terminal for Potentiometer 1
6
12
C4
GND
Ground
7
13
D4
NC
No Connect
8
14
E4
NC
No Connect
9
15
D3
NC
No Connect
10
16
F4
NC
No Connect
11
17
F3
SCL
Bus Serial Clock
12
18
E3
A3
Device Address
13
19
D1
NC
No Connect
14
20
F2
A0
Device Address, LSB
15
21
F1
NC
No Connect
16
22
D2
NC
No Connect
17
23
E1
NC
No Connect
18
24
E2
NC
No Connect
PIN DESCRIPTIONS
SCL:
Serial Clock
The CAT5419 serial clock input pin is used to clock
all data transfers into or out of the device.
SDA:
Serial Data
The CAT5419 bidirectional serial data pin is used
to transfer data into and out of the device. The
SDA pin is an open drain output and can be wire-
OR'd with the other open drain or open collector
outputs.
A0, A1, A2, A3:
Device Address Inputs
These inputs set the device address when
addressing multiple devices. A total of sixteen
devices can be addressed on a single bus.
A match in the slave address must be made
with the address input in order to initiate
communication with the CAT5419.
RH, RL: Resistor End Points
The RH and RL pins are equivalent to the terminal
connections on a mechanical potentiometer.
RW:
Wiper
The RW pins are equivalent to the wiper terminal of
a mechanical potentiometer.
WP:
Write Protect Input
The
WP pin when tied low prevents non-volatile
writes to the data registers (change of wiper control
register is allowed) and when tied high or left
floating normal read/write operations are allowed.
See page 7, Write Protection for more details.
DEVICE OPERATION
The CAT5419 is two resistor arrays integrated with 2-
wire 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 potentiometer (RH and RL). RH and RL are
symmetrical and may be interchanged. The tap positions
between and at the ends of the series resistors are
connected to the output wiper terminals (RW) by a
CMOS transistor switch. Only one tap point for each
potentiometer is connected to its wiper terminal at a time
and is determined by the value of the wiper control
register. Data can be read or written to the wiper control
registers or the non-volatile memory data registers via
the 2-wire bus. Additional instructions allow data to be
transferred between the wiper control registers and
each respective potentiometer's non-volatile data
registers. Also, the device can be instructed to operate
in an "increment/decrement" mode.


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