- 您现在的位置：买卖IC网 > PDF目录3778 > PCA9539BS,118 (NXP Semiconductors)IC I/O EXPANDER I2C 16B 24HVQFN PDF资料下载
参数资料
| 型号： | PCA9539BS,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 36/37页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 16B 24HVQFN |
| 产品培训模块： | I²C Bus Fundamentals |
| 特色产品： | NXP - I2C Interface |
| 标准包装： | 1 |
| 接口： | I²C，SM 总线 |
| 输入/输出数： | 16 |
| 中断输出： | 是 |
| 频率 - 时钟： | 400kHz |
| 电源电压： | 2.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘 |
| 供应商设备封装： | 24-HVQFN（4x4） |
| 包装： | 标准包装 |
| 包括： | POR |
| 产品目录页面： | 825 (CN2011-ZH PDF) |
| 其它名称： | 568-1841-6 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页当前第36页第37页
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
8 of 37
NXP Semiconductors
PCA9539; PCA9539R
16-bit I2C-bus and SMBus low power I/O port with interrupt and reset
6.2.5 Registers 6 and 7: Configuration registers
This register configures the directions of the I/O pins. If a bit in this register is set (written
with ‘1’), the corresponding port pin is enabled as an input with high-impedance output
driver. If a bit in this register is cleared (written with ‘0’), the corresponding port pin is
enabled as an output. At reset, the device's ports are inputs.
6.3 Power-on reset
When power is applied to VDD, an internal power-on reset holds the PCA9539; PCA9539R
in a reset condition until VDD has reached VPOR. At that point, the reset condition is
released and the PCA9539; PCA9539R registers and SMBus state machine will initialize
to their default states. Thereafter, VDD must be lowered below 0.2 V to reset the device.
For a power reset cycle, VDD must be lowered below 0.2 V and then restored to the
operating voltage.
6.4 RESET input
A reset can be accomplished by holding the RESET pin LOW for a minimum of tw(rst). In
the PCA9539 the registers and SMBus/I2C-bus state machine will be held in their default
state until the RESET input is once again HIGH. This input typically requires a pull-up to
VDD. In the PCA9539R, only the device state machine is initialized. The internal
general-purpose registers remain unchanged. Using the PCA9539R hardware reset pin
will only reset the I2C-bus interface should it be stuck LOW to regain access to the
I2C-bus. This allows the I/O pins to retain their last configured state so that they can keep
any lines in their previously defined state and not cause system errors while the I2C-bus is
being restored.
6.5 I/O port
When an I/O is configured as an input, FETs Q1 and Q2 are off, creating a
high-impedance input. The input voltage may be raised above VDD to a maximum of 5.5 V.
If the I/O is configured as an output, then either Q1 or Q2 is on, depending on the state of
the Output port register. Care should be exercised if an external voltage is applied to an
I/O configured as an output because of the low-impedance path that exists between the
pin and either VDD or VSS.
Table 11.
Configuration port 0 register
Bit
7
6
5
4
3
2
1
0
Symbol
C0.7
C0.6
C0.5
C0.4
C0.3
C0.2
C0.1
C0.0
Default
11
Table 12.
Configuration port 1 register
Bit
7
6
5
4
3
2
1
0
Symbol
C1.7
C1.6
C1.5
C1.4
C1.3
C1.2
C1.1
C1.0
Default
11
相关PDF资料 |
PDF描述 |
|---|---|
| PCA9555PW,118 | IC I/O EXPANDER I2C 16B 24TSSOP |
| 583859-7 | CONN CARDEDGE HSNG 15POS DL .156 |
| PCA9575HF,118 | IC I/O EXPANDER I2C 16B 24HWQFN |
| PCA9501BS,118 | IC I/O EXPANDER I2C 8B 20HVQFN |
| PCA9535BS,118 | IC I/O EXPANDER I2C 16B 24HVQFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA9539BSHP | 功能描述:I/O Expander 16 I2C 400kHz 24-HVQFN (4x4) 制造商:nxp semiconductors 系列:- 包装:剪切带（CT） 零件状态:停产 I/O 数:16 接口:I2C 中断输出:是 特性:POR 输出类型:开路漏极 电流 - 灌/拉输出:50mA 频率 - 时钟:400kHz 电压 - 电源:2.3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商器件封装:24-HVQFN（4x4） 标准包装:1 |
| PCA9539BS-T | 制造商:NXP Semiconductors 功能描述:I2C/SMBus GPIO Expander 5.5V 24-Pin HVQFN EP T/R |
| PCA9539D | 功能描述:接口-I/O扩展器 I2C/SMBUS 16BIT GPIO RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| PCA9539D,112 | 功能描述:接口-I/O扩展器 I2C/SMBUS 16BIT GPIO RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| PCA9539D,118 | 功能描述:接口-I/O扩展器 16-BIT I2C FM TP GPIO INT RST RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。