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| 型號： | PCA9506 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 40-bit I2C-bus I/O port with RESET, OE, and INT |
| 中文描述： | 40位I2C總線的I / O端口復(fù)位，光電，和INT |
| 文件頁數(shù)： | 14/30頁 |
| 文件大?。?/td> | 145K |
| 代理商： | PCA9506 |
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9397 750 14939
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 14 February 2006
14 of 30
Philips Semiconductors
PCA9506
40-bit I
2
C-bus I/O port with RESET, OE, and INT
8.
Characteristics of the I
2
C-bus
The I
2
C-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.
8.1 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 7
).
8.1.1
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 defined as the START condition (S). A
LOW-to-HIGH transition of the data line while the clock is HIGH is defined as the STOP
condition (P) (see
Figure 8
).
8.2 System configuration
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 9
).
Fig 7.
Bit transfer
mba607
data line
stable;
data valid
change
of data
allowed
SDA
SCL
Fig 8.
Definition of START and STOP conditions
mba608
SDA
SCL
P
STOP condition
SDA
SCL
S
START condition
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9506BS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:40-bit I2C-bus I/O port with RESET, OE and INT |
| PCA9506BS,118 | 功能描述:接口-I/O擴展器 I/O EXPANDER I2C 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9506BS,118-CUT TAPE | 制造商:NXP 功能描述:PCA9506 Series 40-Bit I2C-Bus I/O Port with RESET OE and INT - HVQFN - 56 |
| PCA9506DGG | 功能描述:接口-I/O擴展器 I/O EXPANDER I2C 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9506DGG,512 | 功能描述:接口-I/O擴展器 I/O EXPANDER I2C 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
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