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参数资料
| 型号： | PCA9554BS,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 34/35页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 8B 16HVQFN |
| 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： | 8 |
| 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： | 16-VQFN 裸露焊盘 |
| 供应商设备封装： | 16-HVQFN |
| 包装： | 标准包装 |
| 包括： | POR |
| 产品目录页面： | 826 (CN2011-ZH PDF) |
| 配用： | 568-4002-ND - DEMO BOARD I2C |
| 其它名称： | 568-3397-6 |
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PCA9554_9554A
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 9 — 19 March 2013
8 of 35
NXP Semiconductors
PCA9554; PCA9554A
8-bit I2C-bus and SMBus I/O port with interrupt
6.1.4 Register 2 - Polarity Inversion register
This register allows the user to invert the polarity of the Input Port register data. If a bit in
this register is set (written with ‘1’), the corresponding Input Port data is inverted. If a bit in
this register is cleared (written with a ‘0’), the Input Port data polarity is retained.
6.1.5 Register 3 - Configuration register
This register configures the directions of the I/O pins. If a bit in this register is set, the
corresponding port pin is enabled as an input with high-impedance output driver. If a bit in
this register is cleared, the corresponding port pin is enabled as an output. At reset, the
I/Os are configured as inputs with a weak pull-up to VDD.
6.2 Power-on reset
When power is applied to VDD, an internal Power-On Reset (POR) holds the
PCA9554/PCA9554A in a reset condition until VDD has reached VPOR. At that point, the
reset condition is released and the PCA9554/PCA9554A registers and 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.
Table 7.
Register 2 - Polarity Inversion register bit description
Legend: * default value.
Bit
Symbol
Access
Value
Description
7
N7
R/W
0*
inverts polarity of Input Port register data
0 = Input Port register data retained (default value)
1 = Input Port register data inverted
6N6
R/W
0*
5N5
R/W
0*
4N4
R/W
0*
3N3
R/W
0*
2N2
R/W
0*
1N1
R/W
0*
0N0
R/W
0*
Table 8.
Register 3 - Configuration register bit description
Legend: * default value.
Bit
Symbol
Access
Value
Description
7
C7
R/W
1*
configures the directions of the I/O pins
0 = corresponding port pin enabled as an output
1 = corresponding port pin configured as input
(default value)
6C6
R/W
1*
5C5
R/W
1*
4C4
R/W
1*
3C3
R/W
1*
2C2
R/W
1*
1C1
R/W
1*
0C0
R/W
1*
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA9554BS3 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit I2C-bus and SMBus I/O port with interrupt |
| PCA9554BS3,118 | 功能描述:接口-I/O扩展器 8bit I2Cbus-SMBus I/O port w/interrupt 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 |
| PCA9554BS-T | 功能描述:I2C 接口集成电路 8-BIT I2C FM TP GPIO INT PU RoHS:否 制造商:NXP Semiconductors 电源电压-最大:5.5 V 电源电压-最小:2.3 V 最大工作频率:400 KHz 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-16 |
| PCA9554CBS | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Low-voltage 8-bit I2C-bus and SMBus low power I/O port with interrupt, weak pull-up |
| PCA9554CBSHP | 功能描述:接口-I/O扩展器 8b I2C/SMBus IO Port I2C Fixed Address 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 |
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