Rainbow-electronics DS2401 Manual de usuario

1 of 10 022102FEATURES§ Upgrade and drop-in replacement for DS2400— Extended 2.8 to 6.0 voltage range— Multiple DS2401s can reside on a common 1-

DS240110 of 10NOTES:1) All voltages are referenced to ground.2) VPUP = external pullup voltage.3) Input load is to ground.4) An additional reset

DS24012 of 10DESCRIPTIONThe DS2401 enhanced Silicon Serial Number is a low-cost, electronic registration number that providesan absolutely unique ide

DS24013 of 10DS2401 EQUIVALENT CIRCUIT Figure 2BUS MASTER CIRCUIT Figure 3A) Open DrainNote:Depending on the 1-Wire communication speed and the bus l

DS24014 of 10TRANSACTION SEQUENCEThe sequence for accessing the DS2401 via the 1-Wire port is as follows:§ Initialization§ ROM Function Command§ R

DS24015 of 101-WIRE SIGNALINGThe DS2401 requires a strict protocol to ensure data integrity. The protocol consists of four types ofsignaling on one l

DS24016 of 10ROM FUNCTIONS FLOW CHART Figure 4

DS24017 of 10INITIALIZATION PROCEDURE “RESET AND PRESENCE PULSES” Figure 5480ms £ tRSTL < ¥ *480ms £ tRSTH < ¥ (includes recovery time)15ms £ t

DS24018 of 10READ/WRITE TIMING DIAGRAM (cont’d) Figure 6Write-zero Time Slot60ms £ tLOW0 < tSLOT < 120ms1ms £ tREC < ¥Read-data Time Slot60m

DS24019 of 10ABSOLUTE MAXIMUM RATINGS*Voltage on any Pin Relative to Ground -0.5V to +7.0VOperating Temperature Range -40°C to +85°CStorage Temperat