收藏本站
Philips Semiconductors
PCA9552
16-bit I 2 C-bus LED driver with programmable blink rates
7. 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.
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 7 ).
SDA
SCL
data line
stable;
change
of data
data valid
allowed
mba607
Fig 7. Bit transfer
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 de?ned as the START condition (S). A
LOW-to-HIGH transition of the data line while the clock is HIGH is de?ned as the STOP
condition (P) (see Figure 8 .)
SDA
SCL
S
START condition
P
STOP condition
SDA
SCL
mba608
Fig 8. De?nition of START and STOP conditions
7.2 System con?guration
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 9 ).
PCA9552_5
? Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 05 — 9 March 2006
10 of 28
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
PCA9553DP/01,118 IC LED DRIVER LINEAR 8-TSSOP
PCA9624PW,118 IC LED DRIVER RGBA 24-TSSOP
PCA9625D/S911,518 IC LED DRIVER RGBA 32-SOIC
PCA9626BS,518 IC LED DRIVER RGBA 48HVQFN
PCA9632DP2,118 IC LED DRIVER RGBA 10-TSSOP
PCA9633BS,118 IC LED DRIVER RGBA 16-HVQFN
PCA9634D,118 IC LED DRIVER RGBA 20-SOIC
PCA9635PW/S911,118 IC LED DRIVER RGBA 28-TSSOP
相关代理商/技术参数
PCA9552PW 功能描述:LED照明驱动器 I2C LED BLNKER 16BIT RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
PCA9552PW,112 功能描述:LED照明驱动器 I2C LED BLNKER 16BIT RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
PCA9552PW,118 功能描述:LED照明驱动器 16-BIT I2C FM OD LED BLK RST RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
PCA9552PW118 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述:
PCA9553 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:4-bit I2C LED driver with programmable blink rates
PCA9553D 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:4-bit I2C LED driver with programmable blink rates
PCA9553D/01 功能描述:LED照明驱动器 LED DRVR 4BIT I2C RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
PCA9553D/01,112 功能描述:LED照明驱动器 LED DRVR 4BIT I2C RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N