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| 型號： | PCA9544A |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 4-channel IC multiplexer with interrupt logic |
| 中文描述： | 4通道多路轉(zhuǎn)換器集成電路的中斷邏輯 |
| 文件頁數(shù)： | 7/23頁 |
| 文件大小： | 578K |
| 代理商： | PCA9544A |
www.ti.com
SDA
SCL
Data Line
Stable;
Data Valid
Change
of Data
Allowed
SDA
SCL
Start Condition
S
Stop Condition
P
SDA
SCL
Master
Transmitter/
Receiver
Slave
Receiver
Slave
Transmitter/
Receiver
Master
Transmitter
Master
Transmitter/
Receiver
I
2
C
Multiplexer
Slave
PCA9544A
4-CHANNEL I
2
C AND SMBus MULTIPLEXER
WITH INTERRUPT LOGIC
SCPS146A–OCTOBER 2005–REVISED OCTOBER 2005
Figure 4. Bit Transfer
Both data and clock lines remain high when the bus is not busy. A high-to-low transition of the data line while the
clock is high is defined as the start condition (S). A low-to-high transition of the data line while the clock is high is
defined as the stop condition (P) (see
Figure 5
).
Figure 5. Definition of Start and Stop Conditions
A device generating a message is a transmitter; a device receiving a message is the receiver. The device that
controls the message is the master, and the devices that are controlled by the master are the slaves (see
Figure 6
).
Figure 6. System Configuration
The number of data bytes transferred between the start and the stop conditions from transmitter to receiver is not
limited. Each byte of eight bits is followed by one ACK bit. The transmitter must release the SDA line before the
receiver can send an ACK bit.
7
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCA9544ADWT | 4-CHANNEL IC AND SMBus MULTIPLEXER WITH INTERRUPT LOGIC |
| PCA9544ARGWR | 4-CHANNEL IC AND SMBus MULTIPLEXER WITH INTERRUPT LOGIC |
| PCC | Programmable Capacitor Chips |
| PCC510-04OM | Programmable Capacitor Chips |
| PCC510-05OM | Programmable Capacitor Chips |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9544A_07 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-CHANNEL I2C AND SMBus MULTIPLEXER WITH INTERRUPT LOGIC |
| PCA9544A_09 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-channel I2C-bus multiplexer with interrupt logic |
| PCA9544ABS | 制造商:NXP Semiconductors 功能描述: |
| PCA9544ABS,118 | 功能描述:多路器開關(guān) IC 4-CH I2C MUX W/INTERRUPT RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| PCA9544ABS118 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
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