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WMS7141 Datasheet Preview

WMS7141 Datasheet

(WMS7140 / WMS7141) NONVOLATILE DIGITAL POTENTIOMETERS

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PRELIMINARY
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WMS7140/1
NONVOLATILE DIGITAL POTENTIOMETERS
WITH UP/DOWN (3-WIRE) INTERFACE,
10KOHM, 50KOHM, 100KOHM RESISTANCE
16 TAPS
WITH OPTIONAL OUTPUT BUFFER
Publication Release Date: April 21, 2005
- 1 - Revision 1.1




Winbond

WMS7141 Datasheet Preview

WMS7141 Datasheet

(WMS7140 / WMS7141) NONVOLATILE DIGITAL POTENTIOMETERS

No Preview Available !

WMS7140/1
1. GENERAL DESCRIPTION
The WMS714x is a 16 non-volatile linear digital potentiometers available in 10K, 50Kand 100K
resistance values. The WMS7140/1 can be used as a three-terminal potentiometer or as a two
terminal variable resistor in a wide variety of applications.
The output of each potentiometer is determined by the wiper position, which varies in linearly between
VA and VB terminal according to the content stored in the volatile Tap Register (TR) which is
programmed through Up/Down (Increment/Decrement) interface. The channel has one non-volatile
memory location (NVMEM0) that can be directly written to by users through the Up/Down interface.
Power-on recall is also built in so the content of the NVMEM0 to Tap Register is automatically loaded.
The WMS7140/1 devices pin out the resistor wiper directly. The WMS7141 devices feature an output
buffer with 3mA minimum drive capability.
All the WMS7140/1 devices are single channel devices offered in 8-pin PDIP, SOIC and MSOP
packages. The WMS7140/1 devices operate over a wide operating voltage ranging from 2.7V to
5.5V.
2. FEATURES
Drop-in replacements for many popular parts
Available output buffer for WMS7141 devices
Single linear-taper channel
16 taps
10K, 50K and 100K end-to end resistance
VSS to VDD terminal voltages
Non-volatile storage of wiper positions with power-on recall
Data storage and potentiometer control through Up/Down (3-wire) interface
Endurance 100,000 write cycles
Data retention 100 years
Package options:
o 8-pin PDIP, SOIC or MSOP
Industrial temperature range: -40° ~ 85°C
Single supply operation 2.7V to 5.5V
-2-


Part Number WMS7141
Description (WMS7140 / WMS7141) NONVOLATILE DIGITAL POTENTIOMETERS
Maker Winbond
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WMS7141 Datasheet PDF






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