參數(shù)資料
型號： PCF8574P
廠商： NXP Semiconductors N.V.
元件分類： I2C/I2S
英文描述： Remote 8-bit I-O expander for I2C-bus
封裝： PCF8574AP<SOT38-4 (DIP16)|<<http://www.nxp.com/packages/SOT38-4.html<1<Always Pb-free,;PCF8574AT/3<SOT162-1 (SO16)|<<http://www.nxp.com/packages/SOT162-1.html<1<wee
文件頁數(shù)： 9/24頁
文件大?。?/td> 132K
代理商： PCF8574P
2002 Nov 22
9
Philips Semiconductors
Product specification
Remote 8-bit I/O expander for I
2
C-bus
PCF8574
7
FUNCTIONAL DESCRIPTION
Fig.9 Simplified schematic diagram of each I/O.
handbook, full pagewidth
MBD977
D
Q
CI
S
FF
D
Q
CI
S
FF
100
μ
A
to interrupt
logic
VSS
P0 to P7
VDD
write pulse
data from
shift register
power-on
reset
read pulse
data to
shift register
7.1
Addressing
For addressing see Figs 10, 11 and 12.
Fig.10 PCF8574 and PCF8574A slave addresses.
handbook, full pagewidth
MBD973
S
0
1
0
0
A2
A1
A0
0
A
1
0
slave address
slave address
A
S
0
1
1
A2
A1
A0
a. PCF8574.
b. PCF8574A.
Each of the PCF8574’s eight I/Os can be independently used as an input or output. Input data is transferred from the
port to the microcontroller by the READ mode (see Fig.12). Output data is transmitted to the port by the WRITE mode
(see Fig.11).
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCF8574P,112 功能描述:接口-I/O擴展器 REMOTE I/O EXPANDER RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCF8574P112 制造商:NXP Semiconductors 功能描述:IC I/O EXPANDER 8BIT 100KHZ DIP-16
PCF8574PN 制造商:NXP Semiconductors 功能描述:IC, I/O EXPANDER, 8BIT, 100KHZ, DIP-16; Chip Configuration:8bit; Bus Frequency:100kHz; IC Interface Type:I2C; Supply Voltage Min:2.5V; Supply Voltage Max:6V; Digital IC Case Style:DIP; No. of Pins:16; No. of I/O's:8 ;RoHS Compliant: Yes
PCF8574PW 功能描述:接口-I/O擴展器 Remote 8-Bit I/O Expander for I2C-Bus RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCF8574PW 制造商:Texas Instruments 功能描述:IC EXPANDER 8BIT SMD TSSOP20
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