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参数资料
| 型号： | LM99 |
| 厂商： | National Semiconductor Corporation |
| 元件分类： | 温度/湿度传感器 |
| 英文描述： | 【1C Accurate, High Temperature, Remote Diode Temperature Sensor with Two-Wire Interface |
| 中文描述： | 【集成电路准确，高温，远程二极管温度传感器，两线接口 |
| 文件页数： | 6/20页 |
| 文件大小： | 349K |
| 代理商： | LM99 |
1.0 Functional Description (Continued)
1.12 FAULT QUEUE
In order to suppress erroneous ALERT or T_CRIT triggering
the LM99 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-on 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 LM99 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
Power On Default State
Register
Name
Register Function
Read Address
<P7:P0> hex
Write Address
<P7:P0> hex
<D7:D0> binary
<D7:D0>
decimal
00h
NA
0000 0000
0
LT
Local Temperature
01h
NA
0000 0000
0
RTHB
Remote Temperature High Byte
02h
NA
0000 0000
0
SR
Status Register
03h
09h
0000 0000
0
C
Configuration
04h
0Ah
0000 1000
8 (16
conv./sec)
CR
Conversion Rate
05h
0Bh
0100 0110
70
LHS
Local HIGH Setpoint
06h
0Ch
0000 0000
0
LLS
Local LOW Setpoint
07h
0Dh
0100 0110
70
RHSHB
Remote HIGH Setpoint High
Byte
08h
0Eh
0000 0000
0
RLSHB
Remote LOW Setpoint High
Byte
NA
0Fh
One Shot
Writing to this register will
initiate a one shot conversion
20053830
FIGURE 10. Fault Queue Temperature Response Diagram
LM99
www.national.com
14
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| LM99-1CIMM | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
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