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| 型号： | PCA9534BS,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 2/25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： | 825 (CN2011-ZH PDF) |
| 其它名称： | 568-1832-6 |
PCA9534_3
NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 03 — 6 November 2006
10 of 25
NXP Semiconductors
PCA9534
8-bit I2C-bus and SMBus low power I/O port with interrupt
7.
Application design-in information
7.1 Minimizing IDD when the I/O us used to control LEDs
When the I/Os are used to control LEDs, they are normally connected to VDD through a
resistor as shown in Figure 12. Since the LED acts as a diode, when the LED is off the
I/O VI is about 1.2 V less than VDD. The supply current, IDD, increases as VI becomes
lower than VDD.
Designs needing to minimize current consumption, such as battery power applications,
should consider maintaining the IOn pins greater than or equal to VDD when the LED is
less than the LED supply voltage by at least 1.2 V. Both of these methods maintain the
I/O VI at or above VDD and prevents additional supply current consumption when the LED
is off.
Device address congured as 0100 100X for this example.
IO0, IO1, IO2 congured as outputs.
IO3, IO4, IO5 congured as inputs.
IO6, IO7 are not used and must be congured as outputs.
Fig 12. Typical application
PCA9534
IO0
IO1
SCL
SDA
VDD
002aac476
SCL
SDA
IO2
IO3
VDD
VSS
MASTER
CONTROLLER
VSS
VDD (5 V)
2 k
SUBSYSTEM 1
(e.g., temp. sensor)
INT
SUBSYSTEM 2
(e.g., counter)
RESET
controlled switch
(e.g., CBT device)
A
B
enable
INT
5 V
INT
10 k
10 k
SUBSYSTEM 3
(e.g., alarm system)
ALARM
IO4
IO5
VDD
A2
A1
A0
IO6
IO7
100 k
(
× 3)
10 k
10 k
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA9534BS3 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit I2C-bus and SMBus low power I/O port with interrupt |
| PCA9534BS3,118 | 功能描述:接口-I/O扩展器 8BIT I2C/SMBUS I/O 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 |
| PCA9534BS3-T | 功能描述:接口-I/O扩展器 8BIT I2C/SMBUS I/O PORT-INTER 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 |
| PCA9534BS-T | 功能描述:接口-I/O扩展器 8BIT I2C/SMBUS I/O PORT-INTER 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 |
| PCA9534D | 功能描述:接口-I/O扩展器 8BIT I2C/SMBUS I/O PORT-INTER 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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