cat5411 Catalyst Semiconductor, cat5411 Datasheet - Page 3

• Manufacturer Part Number: cat5411
• Description: Dual Digitally Programmable Potentiometers Dpp? With 64 Taps And Spi Interface
• Manufacturer: Catalyst Semiconductor

DEVICE OPERATION
The CAT5411 is two resistor arrays integrated with
SPI serial interface logic, four 6-bit wiper control
registers and eight 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 (R
R
The tap positions between and at the ends of the
series resistors are connected to the output wiper
terminals (R
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 SPI 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.
RELIABILITY CHARACTERISTICS
Over recommended operating conditions unless otherwise stated.
Notes:
(1) This parameter is tested initially and after a design or process change that affects the parameter.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
H
Symbol
N
TDR
V
and R
I
LTH
END
ZAP
(1)
(1)
(1)
(1)
L
are symmetrical and may be interchanged.
W
Parameter
Endurance
Data Retention
ESD Susceptibility
Latch-Up
) by a CMOS transistor switch. Only one
MIL-STD-883, Test Method 1033
Reference Test Method
MIL-STD-883, Test Method 1008
MIL-STD-883, Test Method 3015
JEDEC Standard 17
H
and R
L
).
3
SERIAL BUS PROTOCOL
The CAT5041 supports the SPI bus data transmission
protocol. The synchronous Serial Peripheral Interface
(SPI) helps the CAT5411 to interface directly with
many
The CAT5041 contains an 8-bit instruction register.
The instruction set and the operation codes are
detailed in the instruction set table 3.
After the device is selected with CS
byte will be received. The part is accessed via the SI
pin, with data being clocked in on the rising edge of
SCK. The first byte contains one of the six op-codes
that define the operation to be performed.
of
1,000,000
today's
2000
Min
100
100
popular
Typ
¯¯¯ going low the first
Max
microcontrollers.
Doc. No. MD-2114 Rev. I
Cycles/Byte
CAT5411
Years
Units
Volts
mA