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X9C102SI Datasheet(PDF) 2 Page - Xicor Inc. |
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X9C102SI Datasheet(HTML) 2 Page - Xicor Inc. |
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2 / 15 page  X9C102/103/104/503 2 PIN DESCRIPTIONS VH and VL The high (VH) and low (VL) terminals of the X9C102/103/ 104/503 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum voltage is –5V and the maximum is +5V. It should be noted that the terminology of VL and VH references the relative position of the terminal in relation to wiper movement direction selected by the U/ D input and not the voltage potential on the terminal. VW VW is the wiper terminal, equivalent to the movable terminal of a mechanical potentiometer. The position of the wiper within the array is determined by the control inputs. The wiper terminal series resistance is typically 40 Ω. Up/Down (U/ D) The U/ D input controls the direction of the wiper movement and whether the counter is incremented or decremented. Increment ( INC) The INC input is negative-edge triggered. Toggling INC will move the wiper and either increment or decrement the counter in the direction indicated by the logic level on the U/ D input. Chip Select ( CS) The device is selected when the CS input is LOW. The current counter value is stored in nonvolatile memory when CS is returned HIGH while the INC input is also HIGH. After the store operation is complete the X9C102/ 103/104/503 will be placed in the low power standby mode until the device is selected once again. PIN CONFIGURATION PIN NAMES Symbol Description VH High Terminal VW Wiper Terminal VL Low Terminal VSS Ground VCC Supply Voltage U/ D Up/Down Input INC Increment Input CS Chip Select Input NC No Connect 3863 PGM T01 VCC CS VL VW 3863 FHD F02.2 INC U/D VH VSS 1 2 3 4 8 7 6 5 X9C102/ 103/104/503 DIP/SOIC |
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