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參數(shù)資料
| 型號(hào)： | DS18S20Z/T&R |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Switch/Digital Output Temperature Sensor |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), 0.50Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | SOP-8 |
| 文件頁數(shù)： | 8/23頁 |
| 文件大?。?/td> | 252K |
| 代理商： | DS18S20Z/T&R |
DS18S20
16 of 23
Figure 14. ROM Commands Flowchart
CCh
SKIP ROM
COMMAND
MASTER TX
RESET PULSE
DS18S20 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
DS18S20 TX BIT 0
MASTER TX BIT 0
BIT 0
MATCH?
MASTER TX
BIT 1
MATCH?
BIT 63
MATCH?
MASTER TX
BIT 63
N
Y
N
Y
DS18S20 TX BIT 1
MASTER TX BIT 1
DS18S20 TX BIT 63
MASTER TX BIT 63
BIT 0
MATCH?
BIT 1
MATCH?
BIT 63
MATCH?
N
Y
DS18S20 TX
FAMILY CODE
1 BYTE
DS18S20 TX
SERIAL NUMBER
6 BYTES
DS18S20 TX
CRC BYTE
DS18S20 TX BIT 0
MASTER TX BIT 0
N
Y
DEVICE(S)
W ITH ALARM
FLAG SET?
Initialization
Sequence
MASTER TX
FUNCTION
COMMAND
(FIGURE 15)
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