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DS9101 Datasheet(PDF) 39 Page - Maxim Integrated Products

Part # DS9101
Description  Hygrochron Temperature/Humidity Logger
PDF  55 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS9101 Datasheet(HTML) 39 Page - Maxim Integrated Products

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Hygrochron Temperature/Humidity Logger
iButton with 8KB Data-Log Memory
______________________________________________________________________________________
39
DS1923 Tx
PRESENCE PULSE
BUS MASTER Tx
RESET PULSE
BUS MASTER Tx ROM
FUNCTION COMMAND
DS1923 Tx
CRC BYTE
DS1923 Tx
FAMILY CODE
(1 BYTE)
DS1923 Tx
SERIAL NUMBER
(6 BYTES)
OD = 0
RC = 0
MASTER Tx BIT 0
RC = 0
RC = 0
RC = 0
Y
OD
RESET PULSE?
Y
Y
Y
Y
Y
Y
N
33h
READ ROM
COMMAND?
N
55h
MATCH ROM
COMMAND?
BIT 0 MATCH?
BIT 0 MATCH?
N
N
N
N
N
N
N
F0h
SEARCH ROM
COMMAND?
N
ECh
CONDITIONAL SEARCH
COMMAND?
N
Y
RC = 1
MASTER Tx BIT 1
MASTER Tx BIT 63
BIT 1 MATCH?
BIT 63 MATCH?
Y
Y
RC = 1
FROM MEMORY/CONTROL
FUNCTION FLOWCHART (FIGURE 9)
DS1923 Tx BIT 0
DS1923 Tx BIT 0
MASTER Tx BIT 0
BIT 1 MATCH?
BIT 63 MATCH?
DS1923 Tx BIT 1
DS1923 Tx BIT 1
MASTER Tx BIT 1
DS1923 Tx BIT 63
DS1923 Tx BIT 63
MASTER Tx BIT 63
Y
BIT 0 MATCH?
N
N
N
Y
Y
RC = 1
DS1923 Tx BIT 0
DS1923 Tx BIT 0
MASTER Tx BIT 0
CONDITION
MET?
N
Y
BIT 1 MATCH?
BIT 63 MATCH?
DS1923 Tx BIT 1
DS1923 Tx BIT 1
MASTER Tx BIT 1
DS1923 Tx BIT 63
DS1923 Tx BIT 63
MASTER Tx BIT 63
Y
FROM FIGURE 11b
TO FIGURE 11b
TO FIGURE 11b
FROM FIGURE 11b
TO MEMORY/CONTROL
FUNCTION FLOWCHART (FIGURE 9)
Figure 11a. ROM Functions Flowchart



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