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PCF8574APWG4 数据表(PDF) 8 Page - Texas Instruments

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部件名 PCF8574APWG4
功能描述  REMOTE 8-BIT I/O EXPANDER FOR I2C BUS
PDF  21 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

PCF8574APWG4 数据表(HTML) 8 Page - Texas Instruments

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A
A
A
A
S
0
1
1
1
A1
A2
A0 1
Data 1
1
P
Data 3
Start
Condition
Acknowledge
From Slave
Acknowledge
From Slave
Data From Port
Data From Port
Slave Address
R/W
8
7
6
5
4
3
2
1
tir
tir
tsps
tiv
Data 1
Data 2
Data 3
INT
Data
Into
Port
B
B
A
A
Pn
INT
R/W
A
tir
0.7
× VCC
0.3
× VCC
0.7
× VCC
0.3
× VCC
0.7
× VCC
0.3
× VCC
0.7
× VCC
0.3
× VCC
SCL
View B−B
View A−A
tiv
INT
W
A
0.7
× VCC
0.3
× VCC
SCL
D
tpv
Slave
Acknowledge
Unstable
Data
Last Stable Bit
SDA
Pn
PCF8574A
REMOTE 8-BIT I/O EXPANDER FOR I2C BUS
SCPS069D – JULY 2001 – REVISED OCTOBER 2005
PARAMETER MEASUREMENT INFORMATION (continued)
Figure 2. Interrupt Voltage Waveforms
Figure 3. I2C Write Voltage Waveforms
8



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