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X9511WS Datasheet(PDF) 2 Page - Xicor Inc. |
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X9511WS Datasheet(HTML) 2 Page - Xicor Inc. |
2 / 10 page X9511 2 PIN DESCRIPTIONS VH and VL The high (VH) and low (VL) terminals of the X9511 are equivalent to the fixed terminals of a mechanical potenti- ometer. 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 rela- tion to wiper movement direction selected by the PU and PD inputs and not the voltage potential on the terminal. PU The debounced PU input is for incrementing the wiper position. An on-chip pull-up holds the PU input HIGH. A switch closure to ground or a LOW logic level will, after a debounce time, move the wiper to the next adjacent higher tap position. PD The debounced PD input is for decrementing the wiper position. An on-chip pull-up holds the PD input HIGH. A switch closure to ground or a LOW logic level will, after a debounce time, move the wiper to the next adjacent lower tap position. ASE The debounced ASE (AUTOSTORE enable) pin can be in one of two states: VIL – Autostore is enabled. When VCC powers-down an automatic store cycle takes place. VIH – AUTOSTORE is disabled. A LOW to HIGH will ini- tiate a manual store operation. This is for a user who wishes to connect a push button switch to this pin. For every valid push, the X9511 will store the current wiper position to the E2PROM. PIN CONFIGURATION PIN NAMES 3067 FRM T01.1 Symbol Description VH High Terminal VW Wiper Terminal VL Low Terminal VSS Ground VCC Supply Voltage PU Push Up Input PD Push Down Input ASE AUTOSTORE Enable Input VCC ASE VL VW 3067 ILL F02.1 PU PD VH VSS 1 2 3 4 8 7 6 5 X9511 DIP/SOIC |
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