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參數(shù)資料
型號(hào)： PCA8575BQ,118
廠(chǎng)商： NXP Semiconductors
文件頁(yè)數(shù)： 4/30頁(yè)
文件大?。?/td> 0K
描述： IC I/O EXPANDER I2C 16B 24DHVQFN
標(biāo)準(zhǔn)包裝： 3,000
接口： I²C
輸入/輸出數(shù)： 16
中斷輸出： 是
頻率 - 時(shí)鐘： 400kHz
電源電壓： 2.3 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 24-VFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 24-DHVQFN（5.5x3.5）
包裝： 帶卷 (TR)
包括： POR
其它名稱(chēng)： 935283506118
PCA8575BQ-T
PCA8575BQ-T-ND
PCA8575_2
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 02 — 21 March 2007
12 of 30
NXP Semiconductors
PCA8575
Remote 16-bit I/O expander for I2C-bus with interrupt
9.
Characteristics of the I2C-bus
The I2C-bus is for 2-way, 2-line communication between different ICs or modules. The two
lines are a serial data line (SDA) and a serial clock line (SCL). Both lines must be
connected to a positive supply via a pull-up resistor when connected to the output stages
of a device. Data transfer may be initiated only when the bus is not busy.
9.1 Bit transfer
One data bit is transferred during each clock pulse. The data on the SDA line must remain
stable during the HIGH period of the clock pulse as changes in the data line at this time
will be interpreted as control signals (see Figure 15).
9.1.1 START and STOP conditions
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 dened as the START condition (S). A
LOW-to-HIGH transition of the data line while the clock is HIGH is dened as the STOP
condition (P) (see Figure 16.)
9.2 System conguration
A device generating a message is a ‘transmitter’; a device receiving is the ‘receiver’. The
device that controls the message is the ‘master’ and the devices which are controlled by
the master are the ‘slaves’ (see Figure 17).
Fig 15. Bit transfer
mba607
data line
stable;
data valid
change
of data
allowed
SDA
SCL
Fig 16. Denition of START and STOP conditions
mba608
SDA
SCL
P
STOP condition
SDA
SCL
S
START condition
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PCA8575BS 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Remote 16-bit I/O expander for I2C-bus with interrupt
PCA8575BS,118 功能描述:接口-I/O擴(kuò)展器 16-BIT I2C FM QB 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
PCA8575BS-T 功能描述:接口-I/O擴(kuò)展器 16-BIT I2C FM QB GPIO INT PU 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
PCA8575D 功能描述:接口-I/O擴(kuò)展器 16-BIT I2C FM QB GPIO INT PU 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
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