DS1820 View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated
Part Name
Description
MFG CO.
'DS1820' PDF : 27 Pages View PDF
ROM FUNCTIONS FLOW CHART Figure 6
MASTER TX
RESET PULSE
DS1820 TX
PRESENCE
PULSE
MASTER TX ROM
FUNCTION COMMAND
33h
N
READ ROM
COMMAND
Y
55h
N
MATCH ROM
COMMAND
Y
DS1820 TX FAMILY
CODE
1 BYTE
MASTER TX BIT 0
DS1820 TX
SERIAL NUMBER
6 BYTES
DS1820 TX
CRC BYTE
BIT 0
N
MATCH?
Y
MASTER TX BIT 1
F0h
N
SEARCH ROM
COMMAND
Y
DS1820 TX BIT 0
DS1820 TX BIT 0
MASTER TX BIT 0
N
BIT 0
MATCH?
Y
DS1820 TX BIT 1
DS1820 TX BIT 1
MASTER TX BIT 1
ECh
N
ALARM SEARCH
COMMAND
Y
ALARM
N
CONDITION
?
Y
BIT 1
N
MATCH?
Y
N
BIT 1
MATCH?
Y
MASTER TX BIT 63
N
BIT 63
MATCH?
Y
DS1820 TX BIT 63
DS1820 TX BIT 63
MASTER TX BIT 63
N
BIT 63
MATCH?
Y
DS1820
CCh
N
SKIP ROM
COMMAND
Y
MASTER TX MEMORY OR CONTROL
FUNCTION COMMAND
030598 7/27
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