X9C102/103/104/503DESCRIPTIONThe Xicor X9C102/103/104/503 is a solid state nonvola-tile potentiometer and is ideal for digitally controlledresistance trimming
The X9C102/103/104/503 is a resistor array composed of99 resistive elements
Between each element and ateither end are tap points accessible to the wiper element
The position of the wiper element is controlled by the CS,U/D, and INC inputs
The position of the wiper can bestored in nonvolatile memory and then be recalled upon asubsequent power-up operation
The resolution of the X9C102/103/104/503 is equal tothe maximum resistance value divided by 99
As anexample, for the X9C503 (50K Ω) each tap point repre-sents 505Ω
All Xicor nonvolatile memories are designed and testedfor applications requiring extended endurance and dataretention