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DS2407 Fiches technique(PDF) 24 Page - Dallas Semiconductor

No de pièce DS2407
Description  Dual Addressable Switch Plus 1K.Bit Memory
PDF  31 Pages
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Fabricant  DALLAS [Dallas Semiconductor]
Site Internet  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS2407 Fiches technique(HTML) 24 Page - Dallas Semiconductor

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INITIALIZATION PROCEDURE “RESET AND PRESENCE PULSES” Figure 14
tRSTH
tRSTL
tR
VPULLUP
VPULLUP MIN
VIH MIN
VIL MAX
0V
tPDH
tPDL
RESISTOR
MASTER
DS2407
MASTER RX “PRESENCE PULSE”
MASTER TX “RESET PULSE”
480
µs < tRSTL < 1 *
480
µs < tRSTH < 1 (includes recovery time)
15
µs < tPDH < 60 µs
60
µs < tPDL < 240 µs
* In order not to mask interrupt signalling by other devices on the 1–Wire bus, tRSTL + tR should always be less than
960
µs. tRSTL should be limited to maximum 5 ms. Otherwise the DS2407 may perform a power–on reset cycle.
READ/WRITE TIMING DIAGRAM Figure 15
Write–one Time Slot
60
µs
tREC
tLOW1
VPULLUP
VPULLUP MIN
VIH MIN
VIL MAX
0V
15
µs
DS2407
SAMPLING WINDOW
tSLOT
RESISTOR
MASTER
DS2407
60
µs < tSLOT < 120 µs
1
µs < tLOW1 < 15 µs
1
µs < tREC < 1



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