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DS1822Z/T データシート(PDF) 13 Page - Maxim Integrated Products

部品番号 DS1822Z/T
部品情報  Econo 1-Wire Digital Thermometer
PDF  21 Pages
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メーカー  MAXIM [Maxim Integrated Products]
ホームページ  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS1822Z/T データシート(HTML) 13 Page - Maxim Integrated Products

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DS1822
13 of 21
ROM COMMANDS FLOW CHART Figure 11
CCh
SKIP ROM
COMMAND
MASTER TX
RESET PULSE
DS1822 TX
PRESENCE
PULSE
MASTER TX ROM
COMMAND
33h
READ ROM
COMMAND
55h
MATCH ROM
COMMAND
F0h
SEARCH ROM
COMMAND
ECh
ALARM SEARCH
COMMAND
MASTER TX
BIT 0
DS1822 TX BIT 0
DS1822 TX BIT 0
MASTER TX BIT 0
BIT 0
MATCH?
MASTER TX
BIT 1
BIT 1
MATCH?
BIT 63
MATCH?
MASTER TX
BIT 63
N
Y
Y
Y
Y
Y
N
N
N
N
N
N
N
Y
Y
Y
DS1822 TX BIT 1
DS1822 TX BIT 1
MASTER TX BIT 1
DS1822 TX BIT 63
DS1822 TX BIT 63
MASTER TX BIT 63
BIT 0
MATCH?
BIT 1
MATCH?
BIT 63
MATCH?
N
N
N
Y
Y
Y
DS1822 TX
FAMILY CODE
1 BYTE
DS1822 TX
SERIAL NUMBER
6 BYTES
DS1822 TX
CRC BYTE
DS1822 TX BIT 0
DS1822 TX BIT 0
MASTER TX BIT 0
N
Y
DEVICE(S)
WITH ALARM
FLAG SET?
Initialization
Sequence
MASTER TX
FUNCTION
COMMAND
(FIGURE 12)



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