Rainbow-electronics DS1669S Manual do Utilizador

Copyright 1995 by Dallas Semiconductor Corporation.All Rights Reserved. For important information regardingpatents and other intellectual property r

DS1668, DS1669, DS1669S081895 10/10DS1668 PUSHBUTTON DIMENSIONS.420.420.100.125.185.100.300.185PIN 1INDICATOR.022.012.035

DS1668, DS1669, DS1669S081895 2/10DESCRIPTIONThe DS1668 and DS1669 Dallastats are digital rheo-stats or potentiometers. These units provide 64 pos-si

DS1668, DS1669, DS1669S081895 3/10DS1669 SINGLE PUSHBUTTON CONFIGURATION (TYPICAL EXAMPLE) Figure 1DS1669RHUCDRLV+DCRWV–DS1669 DUAL PUSHBUTTON CONFIGU

DS1668, DS1669, DS1669S081895 4/10Dallastats interpret input pulse widths as the means ofcontrolling wiper movement. A single pulse width inputover t

DS1668, DS1669, DS1669S081895 5/10DS1668 DALLASTATTM BLOCK DIAGRAM Figure 3INPUTINTERPRETERAND CONTROLSHADOW MEMORY64 TO 1 MUXERRHEOSTAT+DUCDC-RLRHRWN

DS1668, DS1669, DS1669S081895 6/10FLOWCHART: TWO BUTTON OPERATION Figure 5CONTACT CLOSUREINCREMENT 1/64THDCUC OR DC?AT UPPERLIMIT?UCBOTH CONTACTSOPEN

DS1668, DS1669, DS1669S081895 7/10ABSOLUTE MAXIMUM RATINGS*Voltage on Any Pin Relative to -V -V –0.5V + 8.0VOperating Temperature 0°C to 70°C commerci

DS1668, DS1669, DS1669S081895 8/10ANALOG RESISTOR CHARACTERISTICS (-40°C to +85°C)PARAMETER SYMBOL MIN TYP MAX UNITS NOTESEnd–to–End Resistor Toleranc

DS1668, DS1669, DS1669S081895 9/10NOTES:1. All inputs; UV, DC, and D are internally pulled up with a resistance of 100KΩ.2. Input logic levels are ref