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參數(shù)資料
| 型號： | LM90CIMMX |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | 3 Degree Celcious Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface |
| 中文描述： | 3度Celcious精確，遠程二極管和本地數(shù)字溫度傳感器兩線接口 |
| 文件頁數(shù)： | 13/20頁 |
| 文件大?。?/td> | 384K |
| 代理商： | LM90CIMMX |
1.0 Functional Description
(Continued)
1.12 Fault Queue
In order to suppress erroneous ALERT or T_CRIT triggering
the LM90 incorporates a Fault Queue. The Fault Queue acts
to insure a remote temperature measurement is genuinely
beyond a HIGH, LOW or T_CRIT setpoint by not triggering
until three consecutive out of limit measurements have been
made, see Figure 10 The fault queue defaults off upon
power-up and may be activated by setting bit D0 in the
Configuration register (09h) to “1”.
1.13 One-Shot Register
The One-Shot register is used to initiate a single conversion
and comparison cycle when the device is in standby mode,
after which the device returns to standby. This is not a data
register and it is the write operation that causes the one-shot
conversion. The data written to this address is irrelevant and
is not stored. A zero will always be read from this register.
2.0 LM90 REGISTERS
2.1 COMMAND REGISTER
Selects which registers will be read from or written to. Data for this register should be transmitted during the Command Byte of
the SMBus write communication.
P7
P6
P5
P4
P3
P2
P1
P0
Command Select
P0-P7: Command Select
Command Select Address
Read Address
<
P7:P0
>
hex
00h
01h
02h
03h
04h
05h
06h
07h
Power On Default State
<
D7:D0
>
binary
Register
Name
Register Function
Write Address
<
P7:P0
>
hex
NA
NA
NA
09h
0Ah
0Bh
0Ch
0Dh
<
D7:D0
>
decimal
0
0
0
0
8 (16 conv./sec)
70
0
70
0000 0000
0000 0000
0000 0000
0000 0000
0000 1000
0100 0110
0000 0000
0100 0110
LT
Local Temperature
Remote Temperature High Byte
Status Register
Configuration
Conversion Rate
Local HIGH Setpoint
Local LOW Setpoint
Remote HIGH Setpoint High
Byte
Remote LOW Setpoint High
Byte
Writing to this register will
initiate a one shot conversion
Remote Temperature Low Byte
Remote Temperature Offset
High Byte
Remote Temperature Offset
Low Byte
RTHB
SR
C
CR
LHS
LLS
RHSHB
08h
0Eh
0000 0000
0
RLSHB
NA
0Fh
One Shot
10h
11h
NA
11h
0000 0000
0000 0000
0
0
RTLB
RTOHB
12h
12h
0000 0000
0
RTOLB
20033730
FIGURE 10. Fault Queue Temperature Response
Diagram
L
www.national.com
13
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM90CIMMX/NOPB | 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: 安裝風格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM90EVAL | 功能描述:溫度傳感器開發(fā)工具 LM90 EVAL KIT RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:Temperature Sensors and Control ICs 工具用于評估:MSP430G2553 接口類型:USB 工作電源電壓: 工作電源電流: |
| LM91 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LM91-1001 | 制造商:FLOWLINE 功能描述:Single Indicator, Non-Windowed, 1/8 DIN, PC |
| LM91-2001 | 制造商:FLOWLINE 功能描述:Two Indicator, Non-Windowed, 1/8 DIN, PC |
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