WMS7140/1
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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. Potentiometer and Rheostat Modes ............................................................................................. 7
7.1.1. Rheostat Configuration .......................................................................................................... 7
7.1.2. Potentiometer Configuration .................................................................................................. 7
7.2. Non-Volatile Memory (NVMEM) ................................................................................................... 7
7.3. Serial Data Interface ..................................................................................................................... 8
7.4. Operation Overview ...................................................................................................................... 8
8. TIMING DIAGRAMS............................................................................................................................ 9
9. ABSOLUTE MAXIMUM RATINGS.................................................................................................... 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
14. VERSION HISTORY ....................................................................................................................... 22
