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DS1925 데이터시트(PDF) 32 Page - Maxim Integrated Products

부품명 DS1925
상세설명  iButton High-Capacity Temperature Logger with 122KB Data-Log Memory
PDF  46 Pages
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제조업체  MAXIM [Maxim Integrated Products]
홈페이지  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS1925 데이터시트(HTML) 32 Page - Maxim Integrated Products

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Figure 11a. ROM Functions Flowchart
DS1925
iButton High-Capacity Temperature Logger
with 122KB Data-Log Memory
www.maximintegrated.com
Maxim Integrated │ 32
TO FIGURE 11
2nd PART
33h
READ ROM
COMMAND?
DS1925 Tx ROM FUNCTION
COMMAND
Y
N
RC = 0
55h
MATCH ROM
COMMAND?
Y
N
RC = 0
F0h
SEARCH ROM
COMMAND?
Y
N
RC = 0
ECh
COND. SEARCH
COMMAND?
Y
N
RC = 0
DS1925 Tx
PRESENCE PULSE
OD
RESET PULSE?
N
Y
OD = 0
BUS MASTER Tx
RESET PULSE
FROM FIGURE 11
2nd PART
FROM MEMORY FUNCTIONS
FLOWCHART (FIGURE 9)
CONDITION
MET?
N
Y
DS1925 Tx BIT 0
DS1925 Tx BIT 0
MASTER Ts BIT 0
DS1925 Tx BIT 0
DS1925 Tx BIT 0
MASTER Tx BIT 0
Y
MASTER Tx BIT 0
DS1925 Tx FAMILY
CODE (1 BYTE)
BIT 0
MATCH?
N
Y
BIT 0
MATCH?
N
Y
BIT 0
MATCH?
Y
N
DS1925 Tx BIT 1
DS1925 Tx BIT 1
MASTER Tx BIT 0
BIT 1
MATCH?
N
Y
DS1925 Tx BIT 63
DS1925 Tx BIT 63
MASTER Tx BIT 63
BIT 63
MATCH?
N
Y
RC = 1
DS1925 Tx BIT 1
DS1925 Tx BIT 1
MASTER Tx BIT 1
BIT 1
MATCH?
N
Y
DS1925 Tx BIT 63
DS1925 Tx BIT 63
MASTER Tx BIT 63
BIT 63
MATCH?
N
Y
RC = 1
MASTER Tx BIT 1
BIT 1
MATCH?
Y
N
MASTER Tx BIT 63
BIT 63
MATCH?
N
Y
RC = 1
DS1925 Tx SERIAL
NUMBER (6 BYTES)
DS1925 Tx
CRC BYTE
TO FIGURE 11
2nd PART
FROM FIGURE 11
2nd PART
TO MEMORY FUNCTIONS
FLOWCHART (FIGURE 9)



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