參數(shù)資料
型號(hào): DS1825UTR
廠商: Maxim Integrated Products, Inc.
英文描述: Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID
中文描述: 可編程的1 - Wire數(shù)字溫度計(jì),具有4位ID
文件頁(yè)數(shù): 14/21頁(yè)
文件大?。?/td> 298K
代理商: DS1825UTR
DS1825 Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID
Figure 12. DS1825 FUNCTION COMMANDS FLOW CHART
14 of 21
MASTER T
X
FUNCTION
COMMAND
Y
N
44h
CONVERT
TEMPERATURE
PARASITE
POWER
N
Y
DS1825 BEGINS
CONVERSION
DEVICE
CONVERTING
TEMPERATURE
N
Y
MASTER
R
X
“0s”
MASTER
R
X
“1s”
MASTER ENABLES
STRONG PULLUP ON DQ
DS1825 CONVERTS
TEMPERATURE
MASTER DISABLES
STRONG PULLUP
Y
N
48h
COPY
SCRATCHPAD
PARASITE
POWER
N
Y
MASTER ENABLES
STRONG PULL-UP ON DQ
DATA COPIED FROM
SCRATCHPAD TO EEPROM
MASTER DISABLES
STRONG PULLUP
MASTER
R
X
“0s”
COPY IN
PROGRESS
Y
MASTER
R
X
“1s”
N
RETURN TO INITIALIZATION
SEQUENCE (FIGURE 11) FOR
NEXT TRANSACTION
B4h
READ
POWER SUPPLY
Y
N
PARASITE
POWERED
N
MASTER
R
X
“1s”
MASTER
R
X
“0s”
Y
MASTER T
X
T
H
BYTE
TO SCRATCHPAD
Y
N
4Eh
WRITE
SCRATCHPAD
MASTER T
X
T
L
BYTE
TO SCRATCHPAD
MASTER T
CONFIG. BYTE
TO SCRATCHPAD
Y
N
Y
BEh
READ
SCRATCHPAD
HAVE 8 BYTES
BEEN READ
N
MASTER
T
X
RESET
MASTER R
DATA BYTE
FROM SCRATCHPAD
N
Y
MASTER R
X
SCRATCHPAD
CRC BYTE
MASTER
R
X
“1s”
Y
N
B8h
RECALL E
2
MASTER BEGINS DATA
RECALL FROM E
PROM
DEVICE
BUSY RECALLING
DATA
N
Y
MASTER
R
X
“0s”
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