- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1959 > PCA9539RPW,112 (NXP Semiconductors)IC I/O EXPANDER I2C 16B 24TSSOP PDF資料下載
參數(shù)資料
| 型號： | PCA9539RPW,112 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 6/37頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC I/O EXPANDER I2C 16B 24TSSOP |
| 標準包裝： | 1,575 |
| 接口： | I²C，SM 總線 |
| 輸入/輸出數(shù)： | 16 |
| 中斷輸出： | 是 |
| 頻率 - 時鐘： | 400kHz |
| 電源電壓： | 2.3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 24-TSSOP |
| 包裝： | 管件 |
| 包括： | POR |
| 其它名稱： | 935286605112 PCA9539RPW PCA9539RPW-ND |
第1頁第2頁第3頁第4頁第5頁當前第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁
PCA9539_PCA9539R
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 6 — 6 February 2013
14 of 37
NXP Semiconductors
PCA9539; PCA9539R
16-bit I2C-bus and SMBus low power I/O port with interrupt and reset
6.6.3 Interrupt output
The open-drain interrupt output is activated when one of the port pins changes state and
the pin is configured as an input. The interrupt is deactivated when the input returns to its
previous state or the Input port register is read (see Figure 10). A pin configured as an
output cannot cause an interrupt. Since each 8-bit port is read independently, the interrupt
caused by Port 0 will not be cleared by a read of Port 1 or the other way around.
Remark: Changing an I/O from an output to an input may cause a false interrupt to occur
if the state of the pin does not match the contents of the Input port register.
7.
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.
7.1 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 12).
7.1.1 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 13).
Fig 12. Bit transfer
mba607
data line
stable;
data valid
change
of data
allowed
SDA
SCL
Fig 13. Definition of START and STOP conditions
mba608
SDA
SCL
P
STOP condition
S
START condition
相關PDF資料 |
PDF描述 |
|---|---|
| PCA9554TS,112 | IC I/O EXPANDER I2C 8B 20SSOP |
| PCA9555N,112 | IC I/O EXPANDER I2C 16B 24DIP |
| PCA9556PW,112 | IC I/O EXPANDER I2C 8B 16TSSOP |
| PCA9557D/DG,118 | IC I/O PORT I2C/SMBUS 16-SOIC |
| PCA9574HR,115 | IC I/O EXPANDER I2C 8B 16HXQFN |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9540 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2-channel I2C multiplexer |
| PCA9540B | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2-channel I2C-bus multiplexer |
| PCA9540BD | 功能描述:編碼器、解碼器、復用器和解復用器 I2C MUX 2CH BI-DIR RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| PCA9540BD,112 | 功能描述:編碼器、解碼器、復用器和解復用器 I2C MUX 2CH BI-DIR RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| PCA9540BD,118 | 功能描述:編碼器、解碼器、復用器和解復用器 2-CHANNEL I2C MULTIPLEXER RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
發(fā)布緊急采購，3分鐘左右您將得到回復。