DS4301 Maxim Integrated Products, Inc., DS4301 Datasheet - Page 7

• Manufacturer Part Number: DS4301
• Description: Ds4301 Nonvolatile, 32-position Digital Potentiometer
• Manufacturer: Maxim Integrated Products, Inc.

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cycled to the device, the wiper setting that was just
stored is the setting loaded on power-up.
Wiper storage does not have to occur immediately after
a change in wiper position. At anytime the current wiper
position can be stored to the EEPROM by simply issu-
ing a low pulse to the CS pin for t
remains in a high state. The wiper does not move dur-
ing this action and the current wiper setting is stored in
EEPROM after t
For applications that require a specific wiper setting to
be loaded on power-up and never changed, write the
desired wiper setting to the EEPROM, then tie CS to
V
desired wiper setting is loaded from EEPROM, and
since CS is tied to V
the wiper setting.
There is a limit to the number of times the EEPROM can
be written to before a wear-out occurs (see the
Nonvolatile Memory Characteristics table). After EEP-
ROM wear-out occurs, the wiper can still be adjusted,
however accurately storing the wiper position is no
longer possible. When power is removed from the part,
the current wiper position is lost. Upon power-up, the
wiper setting stored in EEPROM is loaded within t
V
equal to V
the wiper setting that is loaded is unknown.
To achieve the best results when using the DS4301,
decouple the power supply with a 0.01µF or 0.1µF
capacitor. Use a high-quality ceramic surface-mount
capacitor when possible. Surface-mount components
minimize lead inductance, improving performace.
Ceramic capacitors tend to have adequate high-
frequency response for decoupling applications.
CC
CC
. Every time power is cycled to the DS4301, the
Nonvolatile, 32-Position Digital Potentiometer
reaching a stable voltage level greater than or
CC MIN
WST
Application Information
. If EEPROM wear-out has occurred,
.
CC
EEPROM Characteristics
, no changes can be made to
CLP
while the INC pin
Printed USA
WLT
of
TRANSISTOR COUNT: 3512
SUBSTRATE INFO: P-substrate
For the latest package outline information, go to
www.maxim-ic.com/DallasPackInfo.
is a registered trademark of Maxim Integrated Products.
Package Information
Chip Information