參數(shù)資料
型號(hào)： MAX6681
廠商： Maxim Integrated Products, Inc.
英文描述： Quadruple 2-Line To 1-Line Data Selector/Multiplexer With 3-State Outputs 16-CFP -55 to 125
中文描述： ±1°C、具有失效保護(hù)的遠(yuǎn)端/本地溫度傳感器，帶有SMBus接口
文件頁(yè)數(shù)： 13/17頁(yè)
文件大?。?/td> 194K
代理商： MAX6681
still exists, they are reasserted at the end of the next
conversion. If the MAX6680/MAX6681 are operating in
the comparator mode, bits 2
–
6 of the Status register
are cleared only after the local and/or remote tempera-
tures return within the set limits.
The bits indicating OVTI and OVTE are cleared only
when the condition no longer exists. Reading the status
byte does not clear the
OVERT
output or fault bits. One
way to eliminate the fault condition is for the measured
temperature to drop below the temperature threshold
minus the hysteresis value. Another way to eliminate
the fault condition is by writing new values for the
RWOI, RWOE, or HYST registers so that a fault condi-
tion is no longer present.
The MAX6680/MAX6681 incorporate collision avoid-
ance so that completely asynchronous operation is
allowed between SMBus operations and temperature
conversions.
When autoconverting, if the T
HIGH
and T
LOW
limits are
close together, it is possible for both high-temp and
low-temp status bits to be set, depending on the
amount of time between status read operations. In
these circumstances, it is best not to rely on the status
bits to indicate reversals in long-term temperature
changes. Instead use a current temperature reading to
establish the trend direction.
Hardware/Software Reset
The MAX6680/MAX6681 reset at power-on if pin 7 is
taken high, or by software reset through bit 1 of the
Configuration register. When reset occurs, all registers
go to default values, and the SMBus address pins are
sampled.
Conversion Rate Byte
The Conversion Rate register (Table 8) programs the
time interval between conversions in free-running
M
±1°C Fail-Safe Remote/Local Temperature
Sensors with SMBus Interface
______________________________________________________________________________________
13
REGISTER
ADDRESS
POR STATE
FUNCTION
RLTS
00h
0000
at 0
°
C
Read Internal Temperature
RRTE
01h
0000
(0
°
C)
Read External Temperature
RSL
02h
0000 0000
0010 0000
0000 0010
Read Status Register
Read/Write Configuration Byte
Read/Write Conversion Rate Byte
RCL/WCL
RCRA/WCRA
03h/09h
04h/0A
RIH/WIH
05h/0Bh
0111 1111
(+127
°
C)
Read/Write Internal
ALERT
High Limit
RIL/WIL
06h/0Ch
1100 1001
( -55
°
C)
Read/Write Internal
ALERT
Low Limit
REH/WEH
07h/0Dh
0100 0110
(+127
°
C)
Read/Write External
ALERT
High Limit
REL/WEL
08h/0Eh
1100 1001
(-55
°
C)
Read/Write External
ALERT
Low Limit
OSHT
REET
RWOH
RWOL
RWOE
RWOI
0Fh
10h
11h
12h
19h
20h
0000
One Shot
Read External Extended Temperature
Read/Write External Offset High Byte
Read/Write External Offset Low Byte
Read/Write External
OVERT
Limit
Read/Write Internal
OVERT
Limit
0000 0000
0000 0000
0000 0000
See Table 4
See Table 4
HYST
21h
0000 0110
(+6
°
C)
OVERT
Hysteresis
RDID
RDRV
FEh
Ff
0100 1101
0000 0001
Read Manufacturer ID
Read Device Revision
Table 5. Command-Byte Register Bit Assignments
相關(guān)PDF資料
PDF描述
MAX6681MEE QUADRUPLE 2-INPUT POSITIVE-OR GATES 20-LCCC -55 to 125
MAX6680 Fail-Safe Remote/Local Temperature Sensors with SMBus Interface
MAX6684 QUADRUPLE 2-INPUT POSITIVE-OR GATES 14-CDIP -55 to 125
MAX6684ESA QUADRUPLE 2-INPUT POSITIVE-OR GATES 14-CFP -55 to 125
MAX6690 2∑C Accurate Remote/Local Temperature Sensor with SMBus Serial Interface
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX6681EVKIT 功能描述:板上安裝溫度傳感器 Evaluation System/Evaluation Kit for the MAX6681 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX6681EVSYS 功能描述:板上安裝溫度傳感器 1 C Fail-Safe Remote/Local Temperature Sensors with SMBus Interface RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX6681MEE 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX6681MEE+ 功能描述:板上安裝溫度傳感器 Fail-Safe Temperature Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
MAX6681MEE+T 功能描述:板上安裝溫度傳感器 Fail-Safe Temperature Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
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