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X9C102P Datasheet(PDF) 3 Page - Intersil Corporation |
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X9C102P Datasheet(HTML) 3 Page - Intersil Corporation |
3 / 11 page 3 FN8222.1 December 20, 2006 PIN DESCRIPTIONS Pin Symbol Brief Description 1INC Increment . 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. 2U/D Up/Down. The U/D input controls the direction of the wiper movement and whether the counter is incremented or decremented. 3RH/VH RH/VH. The high (VH/RH) 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. The terminology of VH/RH and V L/RL 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. 4 VSS VSS 5 VW/RW VW/RW. VW/RW is the wiper terminal, and is 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. 6 RL/VL RL/VL. The low (V L/RL) 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. The terminology of VH/RH and V L/RL 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. 7CS 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 op- eration is complete the X9C102/103/104/503 device will be placed in the low power standby mode until the device is selected once again. 8 VCC VCC X9C102, X9C103, X9C104, X9C503 |
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