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| 型号： | PCA9685BS,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 29/51页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR PWM 16CH HVQFN28 |
| 产品培训模块： | I²C Bus Fundamentals |
| 标准包装： | 1 |
| 拓扑： | 开路漏极，PWM |
| 输出数： | 16 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，LED 闪烁器 |
| 类型 - 次要： | RGBA |
| 频率： | 25MHz，50MHz |
| 电源电压： | 2.3 V ~ 5.5 V |
| 输出电压： | 5.5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-VQFN 裸露焊盘 |
| 供应商设备封装： | 28-HVQFN（6x6） |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 其它名称： | 568-5305-6 |
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NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I 2 C-bus LED controller
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 16 ).
SDA
SCL
data line
stable;
change
of data
data valid
allowed
mba607
Fig 16. Bit transfer
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 17 ).
SDA
SCL
S
START condition
P
STOP condition
mba608
Fig 17. Definition of START and STOP conditions
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 18 ).
PCA9685
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 2 September 2010
? NXP B.V. 2010. All rights reserved.
29 of 51
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA9685PW | 制造商:NXP Semiconductors 功能描述:IC LED DRIVER RGBA 28-TSSOP 制造商:NXP Semiconductors 功能描述:IC, LED DRIVER, RGBA, 28-TSSOP 制造商:NXP Semiconductors 功能描述:IC, LED DRIVER, RGBA, 28-TSSOP; No. of Outputs:16; Output Current:25mA; Output Voltage:5.5V; Driver Case Style:TSSOP; Input Voltage Min:2.3V; Input Voltage Max:5.5V; Dimming Control Type:PWM; Switching Frequency:1MHz; Operating ;RoHS Compliant: Yes |
| PCA9685PW,112 | 功能描述:LED显示驱动器 I2C Bus LED Controller 28-Pin RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| PCA9685PW,118 | 功能描述:LED显示驱动器 I2C Bus LED Controller 28-Pin RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| PCA9685PW/Q900,118 | 功能描述:LED显示驱动器 LED Driver 2.3V-5.5V 6mA RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| PCA9691BS/1 | 制造商:NXP Semiconductors 功能描述:IC ADC/DAC 8-BIT I2C 16-HVQFN 制造商:NXP Semiconductors 功能描述:IC, ADC/DAC, 8-BIT, I2C, 16-HVQFN |
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