CAT5111V-00-TE13 ON Semiconductor, CAT5111V-00-TE13 Datasheet - Page 2

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CAT5111V-00-TE13

Manufacturer Part Number
CAT5111V-00-TE13
Description
Manufacturer
ON Semiconductor
Datasheet

Specifications of CAT5111V-00-TE13

Number Of Elements
1
# Of Taps
100
Resistance (max)
100KOhm
Power Supply Requirement
Single
Interface Type
Serial (3-Wire)
Single Supply Voltage (typ)
3.3/5V
Dual Supply Voltage (typ)
Not RequiredV
Single Supply Voltage (min)
2.5V
Single Supply Voltage (max)
6V
Dual Supply Voltage (min)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
8
Lead Free Status / Rohs Status
Compliant
GND
INC
INC
INC
INC
INC: Increment Control Input
The INC input (on the falling edge) moves the wiper in the
up or down direction determined by the condition of the
U/D input.
The U/D input controls the direction of the wiper
movement. When in a high state and CS is low, any high-
to-low transition on INC will cause the wiper to move one
increment toward the R
and CS is low, any high-to-low transition on INC will
cause the wiper to move one increment towards the
R
R
required that this terminal be connected to a potential
greater than the R
terminal cannot exceed the supply voltage, V
below ground, GND.
R
position on the resistor array is controlled by the control
inputs, INC, U/D and CS.
R
required that this terminal be connected to a potential
less than the R
terminal cannot exceed the supply voltage, V
below ground, GND. R
interchangeable.
CS
CS
CS
CS
CS: Chip Select
The chip select input is used to activate the control input
GND
CAT5111
Doc. No. 2008, Rev. O
INC
U/D
INC
U/D
R H
R H
H
WB
L
L
D D D D D : Up/Down Control Input
: Low End Potentiometer Terminal
is the low end terminal of the potentiometer. It is not
terminal.
is the high end terminal of the potentiometer. It is not
High End Potentiometer Terminal
: Wiper Potentiometer Terminal (Buffered)
is the buffered wiper terminal of the potentiometer. Its
1
2
3
4
1
2
3
4
8
7
6
5
8
7
6
5
H
terminal. Voltage applied to the R
L
V
CS
R L
R WB
V
CS
R L
R WB
terminal. Voltage applied to the R
CC
CC
H
terminal. When in a low state
L
V
GND
INC
U/D
CS
CC
INC
U/D
R H
and R
1
2
3
4
1
2
3
4
H
are electrically
8
7
6
5
8
7
6
5
CC
CC
V
CS
R WB
R L
R L
R WB
GND
R H
CC
or go
or go
H
L
2
of the CAT5111 and is active low. When in a high
state, activity on the INC and U/D inputs will not
affect or change the position of the wiper.
The CAT5111 operates like a digitally controlled
potentiometer with R
and low terminals and R
potentiometer's wiper. There are 100 available tap
positions including the resistor end points, R
There are 99 resistor elements connected in series
between the R
connected to one of the 100 taps and controlled by three
inputs, INC, U/D and CS. These inputs control a seven-
bit up/down counter whose output is decoded to select
the wiper position. The selected wiper position can be
stored in nonvolatile memory using the INC and
CS inputs.
With CS set LOW the CAT5111 is selected and will
respond to the U/D and INC inputs. HIGH to LOW
transitions on INC wil increment or decrement the
wiper (depending on the state of the U/D input and
seven-bit counter). The wiper, when at either fixed
terminal, acts like its mechanical equivalent and does
not move beyond the last position. The value of the
counter is stored in nonvolatile memory whenever CS
transitions HIGH while the INC input is also HIGH. When
the CAT5111 is powered-down, the last stored wiper
counter position is maintained in the nonvolatile memory.
When power is restored, the contents of the memory are
recalled and the counter is set to the value stored.
With INC set low, the CAT5111 may be de-selected
and powered down without storing the current wiper
position in nonvolatile memory. This allows the
system to always power up to a preset value stored
in nonvolatile memory.
INC
U/D
R
GND
R
R
CS
V
CC
H
WB
L
H
and R
Increment Control
Up/Down Control
Potentiometer High Terminal
Ground
Buffered Wiper Terminal
Potentiometer Low Terminal
Chip Select
Supply Voltage
H
L
WB
and R
terminals. The wiper terminal is
equivalent to the mechanical
L
equivalent to the high
H
and R
L
.

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