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WMS7204100S Datasheet(PDF) 4 Page - Winbond |
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WMS7204100S Datasheet(HTML) 4 Page - Winbond |
4 / 30 page WMS7202 - 4 - 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. Programming Modes .................................................................................................................... 7 7.3. Non-Volatile Memory (NVMEM) ................................................................................................... 8 7.3.1 Write Protect of NVMEM ......................................................................................................... 8 7.4 Flow Control................................................................................................................................... 8 7.5. Daisy Chain .................................................................................................................................. 9 7.6. Serial Data Interface ................................................................................................................... 10 7.7. Instruction Set............................................................................................................................. 12 7.8. Basic Operation .......................................................................................................................... 12 7.8.1 Sending a Command ............................................................................................................ 12 7.8.2 Wake Up/Sleep/Power Commands ...................................................................................... 13 7.8.3 Write to Tap Register (TR).................................................................................................... 13 7.8.4 Programming Non-Volatile Memory (NVMEM)..................................................................... 14 7.8.5 Reading Tap Registers and NVMEM Locations ................................................................... 15 8. TIMING DIAGRAMS.......................................................................................................................... 16 9. Absolute Maximum Ratings............................................................................................................... 18 10. ELECTRICAL CHARACTERISTICS ............................................................................................... 19 10.1 Test Circuits............................................................................................................................... 21 11. TYPICAL APPLICATION CIRCUIT.................................................................................................22 11.1. Layout Considerations.............................................................................................................. 25 12. PACKAGE DRAWINGS AND DEMINSIONS.................................................................................. 26 13. ORDERING INFORMATION........................................................................................................... 29 14. VERSION HISTORY ....................................................................................................................... 30 |
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