DS1825 Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID
 
14 of 21
 
 
Figure 12. DS1825 FUNCTION COMMANDS FLOW CHART  
 
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 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
X
 CONFIG. BYTE
TO SCRATCHPAD
Y
N
Y
BEh
READ
SCRATCHPAD
?
HAVE 8 BYTES
BEEN READ
?
N
MASTER
T
X
 RESET
?
MASTER R
X
 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
2
 PROM
DEVICE
BUSY RECALLING
DATA
?
N
Y
MASTER
R
X
 0s
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相关代理商/技术参数
DS1825U+TR 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID
DS1825UTR 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID
DS1830 功能描述:监控电路 Reset Sequencer RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟(典型值):10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel
DS1830+ 功能描述:监控电路 Reset Sequencer RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟(典型值):10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel
DS1830A 功能描述:监控电路 Reset Sequencer RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟(典型值):10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel
DS1830A+ 功能描述:监控电路 Reset Sequencer RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟(典型值):10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel
DS1830AS 功能描述:监控电路 Reset Sequencer RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟(典型值):10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel
DS1830AS/T&R 制造商:Maxim Integrated Products 功能描述:3.3V RESET SEQUENCER 8P SOIC T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC SEQUENCER RESET PB 3.3V 8SOIC 制造商:Maxim Integrated Products 功能描述:Supervisory Circuits Reset Sequencer