CAT5114VP2I-00-G CATALYST [Catalyst Semiconductor], CAT5114VP2I-00-G Datasheet - Page 2

• Manufacturer Part Number: CAT5114VP2I-00-G
• Manufacturer: CATALYST [Catalyst Semiconductor]

CAT5114
PIN CONFIGURATION
PIN FUNCTION
INC
The INC
direction determined by the condition of the U/D ¯ input.
U/D ¯ : Up/Down Control Input
The U/D ¯ input controls the direction of the wiper
movement. When in a high state and CS
high-to-low transition on INC
move one increment toward the R
a low state and CS
on INC
towards the R
R
R
not required that this terminal be connected to a
potential greater than the R
to the R
V
R
R
position on the resistor array is controlled by the
control inputs, INC
the R
V
R
R
required that this terminal be connected to a potential less
than the R
cannot exceed the supply voltage, V
ground, GND. R
CS
The chip select input is used to activate the control
input of the CAT5114 and is active low. When in a
Doc. No. MD-2007 Rev. O
¯¯¯ : Increment Control Input
¯¯ : Chip Select
CC
CC
L
H
H
W
W
L
: Low End Potentiometer Terminal
: High End Potentiometer Terminal
: Wiper Potentiometer Terminal
is the low end terminal of the potentiometer. It is not
¯¯¯ will cause the wiper to move one increment
is the high end terminal of the potentiometer. It is
TSSOP 8-Lead (Y)
or go below ground, GND.
or go below ground, GND.
INC
U/D ¯ 4
¯¯¯
is the wiper terminal of the potentiometer. Its
V
CS
¯¯
¯¯¯ input moves the wiper in the up or down
CC
W
H
terminal cannot exceed the supply voltage,
1
2
3
terminal cannot exceed the supply voltage,
H
PDIP 8-Lead (L), SOIC 8-Lead (V),
CAT
terminal. Voltage applied to the R
L
L
terminal.
¯¯¯ , U/D ¯ and CS
8 R
7 R
6 GND
5 R
and R
¯¯ is low, any high-to-low transition
GND 4
MSOP 8-Lead (Z)
¯¯¯
INC
U/D ¯ 2
L
WB
H
R
H
H
are electrically interchangeable.
1
3
¯¯¯ will cause the wiper to
CAT
L
terminal. Voltage applied
GND 4
¯¯¯ 1
INC
U/D ¯ 2
¯¯ .
8 V
7 CS
6 R
5 R
(ZD7, VP2)
R
H
¯¯
H
CC
L
WB
TDFN 8-Pad
3
Voltage applied to
terminal. When in
CC
¯¯ is low, any
or go below
Top View
L
terminal
8 V
7 CS
6 R
5 R
¯¯
CC
L
WB
2
PIN DESCRIPTIONS
high state, activity on the INC
affect or change the position of the wiper.
DEVICE OPERATION
The CAT5114 operates like a digitally controlled
potentiometer with R
and low terminals and R
nical potentiometer's wiper. There are 32 available tap
positions including the resistor end points, R
There are 31 resistor elements connected in series
between the R
is connected to one of the 32 taps and controlled by
three inputs, INC
seven-bit up/down counter whose output is decoded
to select the wiper position. The selected wiper
position can be stored in non-volatile memory using
the INC
With CS
respond to the U/D ¯ and INC
transitions on INC
(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
HIGH while the INC
CAT5114 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
and powered down without storing the current wiper
position in nonvolatile memory. This allows the system
to always power
volatile memory.
Name Function
GND Ground
INC
U/D ¯
¯¯¯
V
R
CS
R
R
¯¯
¯¯¯ and CS
CC
W
H
L
¯¯¯ set low, the CAT5114 may be de-selected
¯¯ set LOW the CAT5114 is selected and will
Increment Control
Up/Down Control
Potentiometer High Terminal
Buffered Wiper Terminal
Potentiometer Low Terminal
Chip Select
Supply Voltage
¯¯ inputs.
¯¯¯ , U/D ¯ and CS
¯¯¯ wil increment or decrement the wiper
H
and RL terminals. The wiper terminal
¯¯¯ input is also HIGH. When the
up to a preset value stored in non
H
and R
W
Characteristics subject to change without notice
¯¯¯ and U/D ¯ inputs will not
¯¯¯ inputs. HIGH to LOW
¯¯ . These inputs control a
equivalent to the mecha–
L
equivalent to the high
© Catalyst Semiconductor, Inc.
¯¯ transitions
H
and R
L
.
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