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WMS7101 데이터시트 PDF




Winbond에서 제조한 전자 부품 WMS7101은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 WMS7101 기능
기능 (WMS7100 / WMS7101) NON-VOLATILE DIGITAL POTENTIOMETERS
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WMS7101 데이터시트, 핀배열, 회로
PRELIMINARY DATASHEET
WMS7100 / 7101
NON-VOLATILE DIGITAL POTENTIOMETERS
WITH UP/DOWN (3-WIRE) INTERFACE,
10KOHM, 50KOHM, 100KOHM RESISTANCE
256 TAPS
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WITHOUT / WITH OUTPUT BUFFER
Publication Release Date: July 2003
- 1 - Revision 1.0




WMS7101 pdf, 반도체, 판매, 대치품
WMS7100 / 7101
4. TABLE OF CONTENTS
1. GENERAL DESCRIPTION.................................................................................................................. 2
2. FEATURES ......................................................................................................................................... 2
3. BLOCK DIAGRAM............................................................................................................................... 3
4. TABLE OF CONTENTS ...................................................................................................................... 4
5. PIN CONFIGURATION ....................................................................................................................... 5
6. PIN DESCRIPTION ............................................................................................................................. 6
7. FUNCTIONAL DESCRIPTION............................................................................................................ 7
7.1. Rheostat And Divider Operations ........................................................................................... 7
7.1.1. Rheostat Configuration .......................................................................................................... 7
7.1.2. Divider Configuration.............................................................................................................. 7
7.2. Non-Volatile Memory (NVMEM0) ........................................................................................... 7
7.3. Serial Data Interface ................................................................................................................. 8
7.4. Operation Overview .................................................................................................................. 8
8. TIMING DIAGRAMS............................................................................................................................ 9
9. ABSOLUTE MAXIMUM RATINGS & OPERATING CONDITIONS .................................................. 11
10. ELECTRICAL CHARACTERISTICS ............................................................................................... 12
10.1 Test Circuits ............................................................................................................................ 14
11. TYPICAL APPLICATION CIRCUITS............................................................................................... 15
11.1. Layout Considerations.......................................................................................................... 17
12. PACKAGE DRAWINGS AND DIMENSIONS.................................................................................. 18
13. ORDERING INFORMATION........................................................................................................... 21
www.DataShe1et44.UV.cEomRSION HISTORY ....................................................................................................................... 22
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WMS7101 전자부품, 판매, 대치품
WMS7100 / 7101
7. FUNCTIONAL DESCRIPTION
7.1. RHEOSTAT AND DIVIDER OPERATIONS
The WMS7100 device can operate as either a two-terminal variable resistor or a three-terminal
voltage divider without an output buffer. However, the WMS7101 can only operate in a three-terminal
voltage divider with an output buffer.
7.1.1. Rheostat Configuration
In the rheostat mode, the WMS7100 can be configured as a two-terminal resistive element, where one
terminal is connected to one end of the resistor (RA or RB) and the other terminal is the wiper (RW).
The moving direction of the wiper depends upon the setting of U/ D control signal. When the U/ D is
set to Up, then the wiper moves towards RA. Conversely, when the U/ D is set to Down, then the
wiper moves towards RB. The wiper movement to either direction is controlled by toggling the INC
signal from HIGH to LOW.
This configuration controls the resistance between the wiper and either end. The wiper resistance can
be adjusted by either changing the wiper position or loading a stored wiper position value from
NVMEM0 upon power up.
7.1.2. Divider Configuration
Additionally, the WMS7100 can also be configured as a voltage divider. With an input voltage applied
to one end (usually VA ), the ground is connected to the other end (usually VB). These input voltages
cannot exceed the VDD level or go below the VSS level. The voltage on the wiper, VW, is proportional
to the wiper position with respect to the voltage difference between VA and VB. The moving direction of
the wiper depends upon the setting of the U/ D control signal. When the U/ D is set to Up, then the
wiper moves towards VA. Conversely, when the U/ D is set to Down, then the wiper moves towards
VB. The wiper movement to either direction is controlled by toggling the INC signal from HIGH to
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Nevertheless, the WMS7101 can only be configured as a voltage divider and operate similarly as the
WMS7100 device. The only difference is WMS7101 has an output buffer, but WMS7100 doesn’t have.
Besides, the resistance cannot be directly measured in this configuration.
7.2. NON-VOLATILE MEMORY (NVMEM0)
The WMS7100/7101 has one NVMEM0 location available for storing the current wiper position via the
Up/Down serial interface. This stored value is automatically recalled and loaded into the tap register
upon power up.
Publication Release Date: July 2003
- 7 - Revision 1.0

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관련 데이터시트

부품번호상세설명 및 기능제조사
WMS7100

(WMS7100 / WMS7101) NON-VOLATILE DIGITAL POTENTIOMETERS

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WMS7101

(WMS7100 / WMS7101) NON-VOLATILE DIGITAL POTENTIOMETERS

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