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单片机编程 PCA9624 8位快速I2C总线40V 100mA LED
PCA9624是一款带I2C总线的8位LED的电压开关优化的LED驱动器，它主要应用于电流为100mA 的红/绿/蓝/琥珀（RGBA）的LED的亮度和闪烁的控制。每个LED输出均有独立的8位分辨率（256个梯度）且输出频率固定为97KHz的PWM控制器它可以在0%到99.6%的范围内对LED的亮度进行调整，使发光二极管被设置为一个特定的亮度值。额外的8位分 ...
单片机编程 X-tal oscillators on 8-bit mic
<Almost since the introduction of microcontrollers as electronic components there always has been an oscillatorcircuit on the device to make it work. From application point of view only some external components wererequired to make it work. However, to make sure that it will always work required mor ...
单片机编程 PCA9670 Remote 8-bit IO expand
The PCA9670 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plusfamily.The PCA9670 is a drop-in upgrade for the PCF8574 providing higher Fast-mode Plus(Fm+) I2C-bus speeds (1 MHz versus 400 kHz ...
单片机编程 PCA9672 Remote 8-bit IO expand
The PCA9672 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plusfamily.The PCA9672 is a drop-in upgrade for the PCF8574 providing higher Fast-mode Plus(Fm+) I2C-bus speeds (1 MHz versus 400 kHz ...
单片机编程 PCA9674 PCA9674A Remote 8-bit
The PCA9674/74A is a drop-in upgrade for the PCF8574/74A providing higher Fast-modePlus I2C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWMdimming of LEDs, higher I2C-bus drive (30 mA versus 3 mA) so that many more devicescan be on the bus without the need for bus buffers, highe ...
单片机编程 8-bit I2C-bus and SMBus IO port with reset
The PCA9557 is a silicon CMOS circuit which provides parallel input/output expansion for
SMBus and I2C-bus applications. The PCA9557 consists of an 8-bit input port register,
8-bit output port register, and an I2C-bus/SMBus interface. It has low current consumption
and a high-impedance open-dra ...
单片机编程 RSM-4055 8通道隔离数字量输入输出模块
RSM-4055 是带隔离的数字量输入输出模块。模块有8 路隔离数字量输入，8 路隔离数字量输出。数字量输入可支持开关触点信号或电平信号，数字量输出采用开漏输出，最大负载可达50V，50mA，同时模块的DI 通道还具有计数功能，能对小于2kHz 的数字脉冲信号进行计数，DI 输入检测和计数都具有数字滤波功能能有效滤掉干扰信号，数 ...
单片机编程 8-bit IC and SMBus IO Port wit
The CAT9534 is an 8-bit parallel input/output portexpander for I&sup2;C and SMBus compatible applications.These I/O expanders provide a simple solution inapplications where additional I/Os are needed: sensors,power switches, LEDs, pushbuttons, and fans.The CAT9534 consists of an input port register, ...
单片机编程 EZ-USB FX系列单片机USB外围设备设计与应用
EZ-USB FX系列单片机USB外围设备设计与应用:PART 1 USB的基本概念第1章 USB的基本特性1.1 USB简介21.2 USB的发展历程31.2.1 USB 1.131.2.2 USB 2.041.2.3 USB与IEEE 1394的比较41.3 USB基本架构与总线架构61.4 USB的总线结构81.5 USB数据流的模式与管线的概念91.6 USB硬件规范101.6.1 USB的硬件特性111.6.2 USB接口的电气特 ...
单片机编程 at89c2051 高性能CMOS 8位单片机
AT89C2051是一个低电压，高性能CMOS 8位单片机，片内含2k bytes的可反复擦写的只读Flash程序存储器和128 bytes的随机存取数据存储器（RAM），器件采用ATMEL公司的高密度、非易失性存储技术生产，兼容标准MCS-51指令系统，片内置通用8位中央处理器和Flash存储单元，功能强大AT89C2051单片机可为您提供许多高性价比的应用场合 ...