DS2417_07 Datasheet, PDF (9/15 Pages) Dallas Semiconductor – 1-Wire Time Chip with Interrupt

ROM FUNCTIONS FLOW CHART Figure 7
Master TX
Reset Pulse
DS2417 TX
Presence Pulse
Master TX ROM
Function Command
DS2417
33H
N
Read ROM
Command
?
Y
55H
Match ROM
N
Command
?
Y
F0H
Search ROM
Command
?
Y
N
CCH
Skip ROM
N
Command
?
Y
DS2417 TX
Family Code
1 Byte
Master TX Bit 0
DS2417 TX Bit 0
DS2417 TX Bit 0
Master TX Bit 0
DS2417 TX
Serial Number
6 Bytes
Bit 0
N
Match ?
Y
Master TX Bit 1
N
Bit 0
Match ?
Y
DS2417 TX Bit 1
DS2417 TX Bit 1
Master TX Bit 1
Bit 1
NN
Match ?
Y
Bit 1
Match ?
Y
DS2417 TX
CRC Byte
Master TX Bit 63
DS2417 TX Bit 63
DS2417 TX Bit 63
Master TX Bit 63
Bit 63
NN
Match ?
Y
Bit 63
Match ?
Y
Master TX Control
Function Command
(SEE FIGURE 5)
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