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PCF8574APWG4 数据表(PDF) 7 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
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

PCF8574APWG4 数据表(HTML) 7 Page - Texas Instruments

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PARAMETER MEASUREMENT INFORMATION
RL = 1 kΩ
VCC
CL = 10 pF to = 400 pF
tbuf
ticr
tsth
tsds
tsdh
ticf
ticr
tscl
tsch
tsts
tPHL
tPLH
0.3
× VCC
Stop
Condition
tsps
Repeat
Start
Condition
Start or
Repeat
Start
Condition
SCL
SDA
Start
Condition
(S)
Bit 7
(MSB)
Bit 6
Bit 0
LSB
(R/W)
Acknowledge
(A)
Stop
Condition
(P)
2 Bytes for Complete Device
Programming
LOAD CIRCUIT
VOLTAGE WAVEFORMS
ticf
Stop
Condition
(P)
tsp
DUT
Pn
0.7
× VCC
0.3
× VCC
0.7
× VCC
PCF8574A
REMOTE 8-BIT I/O EXPANDER FOR I2C BUS
SCPS069D – JULY 2001 – REVISED OCTOBER 2005
Figure 1. I2C Interface Load Circuit and Voltage Waveforms
7



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