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参数资料
| 型号： | LMP91000SDE |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO14 |
| 封装： | LLP-14 |
| 文件页数： | 11/24页 |
| 文件大小： | 696K |
| 代理商： | LMP91000SDE |
30132584
FIGURE 6. 2-Lead Galvanic Cell In Potentiostat Configuration
Application Information
CONNECTION OF MORE THAN ONE LMP91000 TO THE
I2C BUS
The LMP91000 comes out with a unique and fixed I2C slave
address. It is still possible to connect more than one
LMP91000 to an I2C bus and select each device using the
MENB pin. The MENB simply enables/disables the I2C com-
munication of the LMP91000. When the MENB is at logic level
low all the I2C communication is enabled, it is disabled when
MENB is at high logic level.
In a system based on a
μcontroller and more than one
LMP91000 connected to the I2C bus, the I2C lines (SDA and
SCL) are shared, while the MENB of each LMP91000 is con-
nected to a dedicate GPIO port of the
μcontroller.
The
μcontroller starts communication asserting one out of N
MENB signals where N is the total number of LMP91000s
connected to the I2C bus. Only the enabled device will ac-
knowledge the I2C commands. After finishing communicating
with this particular LMP91000, the microcontroller de-asserts
the corresponding MENB and repeats the procedure for other
LMP91000s. Figure 7 shows the typical connection when
more than one LMP91000 is connected to the I2C bus.
30132581
FIGURE 7. More than one LMP91000 on I2C bus
19
www.national.com
LMP91000
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LMP91000SDE/NOPB | 功能描述:空气质量传感器 RoHS:否 制造商:GE M&C / Telaire 类型:CO2 Module 检测灵敏度: 工作电源电压:5 V 最大工作温度:+ 50 C 最小工作温度:0 C |
| LMP91000SDEVAL | 制造商:Texas Instruments 功能描述: |
| LMP91000SDEVAL/NOPB | 功能描述:多功能传感器开发工具 GAS SENSOR AFE EVAL BOARDLMP91 RoHS:否 制造商:Texas Instruments 工具用于评估:LMP91200 接口类型:SPI 工作电压:1.8 V to 5.5 V 最大工作温度: |
| LMP91000SDX | 制造商:TI 制造商全称:Texas Instruments 功能描述:Sensor AFE System: Configurable AFE Potentiostat for Low-Power Chemical Sensing Applications |
| LMP91000SDX/NOPB | 功能描述:空气质量传感器 RoHS:否 制造商:GE M&C / Telaire 类型:CO2 Module 检测灵敏度: 工作电源电压:5 V 最大工作温度:+ 50 C 最小工作温度:0 C |
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