Datasheet

Figure 13. Read/Write Time Slot Timing Diagram
V
PU
GND
1-Wire BUS
1µs < T
REC
< ∞
MIN
> 1µs
MASTER WRITE “0” SLOT MASTER WRITE “1” SLOT
MASTER READ “0” SLOT
MASTER READ “1” SLOT
MASTER SAMPLES
MASTER SAMPLES
START
OF SLOT
START
OF SLOT
DS18S20 SAMPLES
> 1µs
LINE TYPE LEGEND
BUS MASTER PULLING LOW
60µs < Tx “0” < 120µs
TYP MAX
30µS
15µS
15µS
30µS
15µS
15µS
MIN TYP MAX
DS18S20 SAMPLES
1µs < T
REC
< ∞
V
PU
GND
1-Wire BUS
15µs
45µs
> 1µs
15µs
RESISTOR PULLUP
DS18S20 PULLING LOW
DS18S20 High-Precision 1-Wire Digital Thermometer
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