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PCF8574 데이터시트(PDF) 10 Page - Texas Instruments

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부품명 PCF8574
상세설명  REMOTE 8-BIT I/O EXPANDER FOR I2C BUS
PDF  26 Pages
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제조업체  TI [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI - Texas Instruments

PCF8574 데이터시트(HTML) 10 Page - Texas Instruments

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background image
A
A
A
A
S
0
1
0
0
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
INT
SCL
View B−B
View A−A
tiv
W
A
0.7
× VCC
0.3
× VCC
SCL
D
tpv
Slave
Acknowledge
Unstable
Data
Last Stable Bit
SDA
Pn
PCF8574
SCPS068G – JULY 2001 – REVISED MAY 2008 ............................................................................................................................................................... www.ti.com
PARAMETER MEASUREMENT INFORMATION (continued)
Figure 4. Interrupt Voltage Waveforms
Figure 5. I2C Write Voltage Waveforms
10
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Copyright © 2001–2008, Texas Instruments Incorporated
Product Folder Link(s): PCF8574



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