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PCA9901DP PDF预览

PCA9901DP

更新时间： 2024-11-14 05:59:47
品牌 Logo 应用领域
恩智浦 - NXP 显示驱动器驱动程序和接口接口集成电路光电二极管
页数 文件大小 规格书
27页 546K
描述
One wire single LED driver

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中文翻译

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PCA9901DP 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：TSSOP,针数：8
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.79
Is Samacsys：N接口集成电路类型：LED DISPLAY DRIVER
JESD-30 代码：S-PDSO-G8长度：3 mm
湿度敏感等级：1复用显示功能：NO
功能数量：1区段数：1
端子数量：8最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装形状：SQUARE
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.1 mm
最大供电电压：5.5 V最小供电电压：2.7 V
标称供电电压：3.3 V表面贴装：YES
温度等级：INDUSTRIAL端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3 mm
Base Number Matches：1

PCA9901DP 数据手册

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PCA9901  
One wire single LED driver  
Rev. 01 — 3 December 2009  
Product data sheet  
1. General description  
The PCA9901 is a 20 mA current source for a single LED that allows stand-alone blinking  
of a predefined pattern to off-load the microcontroller and save battery power.  
Programming of the device is done through a training sequence: the host controller sends  
the LED lighting sequence and the PCA9901 memorizes it. Once the sequence has been  
memorized, the PCA9901 can be programmed to send it once or in a loop until the host  
controller requests the sequence to be stopped.  
Commands and blinking sequence are sent through a uni-directional one-wire interface.  
Commands include: Training Start, Training End, Execute Sequence (once or in loop until  
a Stop Command is requested) and Reset. A blinking sequence includes up to 3 different  
blinking patterns, each defined by its ON and OFF timings.  
A bypass mode allows the training sequence to be ignored and the LED output to follow  
the one-wire interface Logic state to directly control the LED from the microcontroller.  
An external resistor sets the maximum current that flows in the LED, which can be set  
between 1 mA and 20 mA.  
The PCA9901 operates from a 2.7 V to 5.5 V power supply.  
2. Features  
„ 1 wire interface to control the device  
„ Stand-alone blinking capability while training the sequence to blink  
„ Sequence includes up to 3 blinking elements  
„ 12-bit (4096 steps) LED ON and OFF timings for each blinking element:  
‹ ON timing is captured between 1 ms and 255 ms  
‹ OFF timing is captured between 20 ms and 5.1 s  
„ 1.8 V compliant one-wire logic interface  
„ Training Start, Training End, Run-Once, Run, Stop and Reset commands  
„ High side current controlled LED driver with 1 mA to 20 mA max current in the LED set  
by an external resistor. 5 mA drive capability when no external resistor is connected  
„ 110 mV max dropout voltage driver at 20 mA  
„ Fully internal oscillator for sequence training, LED timing, Command and Sequencing  
Controls  
„ Short circuit and thermal protection  
„ 2.7 V to 5.5 V power supply  
„ Very low quiescent current: < 0.75 μA  
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