PCF8575DW Integrated Circuits (ICs)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

PCF8575DW is a 16-bit input/output expander by NXP Semiconductors. It acts as an output port extender, combining with up to 16 input/output lines. It uses the industry-standard I2C protocol to process data. It can be used in both 8-bit and 16-bit mode, allowing the user to decrease or increase the amount of data sent on each I2C transactions. Its slave-fast I2C operation permits 5.4 to 10 MHz communication, allowing for both low-speed (100 kHz) and high-speed (400 kHz) operation. Moreover, its 40 mA (max) output current can drive LEDs or LCDs.The PCF8575DW I/O expander has from 16 to 40 pins, depending on the package chosen. Its main components include an I2C protocol block, a 3-state output and an interrupt pin (INTR). The output pin is useful for enabling the chip\'s output quickly and accurately and the interrupt pin permits the user to known when an I/O needs attention.The PCF8575DW I/O expander can be used in many different application fields. It can be used in industrial applications such as human-machine interfaces (HMIs), test and measurement, lighting and control systems. It is also used in the home automation, medical and automotive industries to name a few. For example, it can be used in solar panel tracking applications which require the PCF8575DW to switch output ports and adjust the light level in response to changes in the sun\'s position. In addition, the PCF8575DW can be used in many different applications to alleviate the delay imposed on the system processor by communication and servo drive systems. For example, in motor control system, it can be used to sense over-current or stall conditions, to manage alarm and counter systems, and other applications. It can also be used for motion control applications such as monitoring temperature and controlling actuators.The working principle of the PCF8575DW is quite simple. It stores data in 16-bit registers and communicates this data to the an controlling microprocessor through the I2C protocol. The first 8 bits of data are stored in the Output Data register, while the second 8 bits are stored in the Input Data register. When the controlling microprocessor sends data to the PCF8575DW, it is stored in the Output Data register. It is then transferred to the expander\'s output buffers. The expander\'s output will then be driven by the appropriate logic levels. The Input Data register stores the logic level value of the expander\'s input ports. Whenever a change on the pins is detected, the expander signals to the controlling microprocessor by pulling the INTR line low. The microprocessor can then query the value of the input pins from this signal and make decisions accordingly.To sum up, the PCF8575DW is an ideal choice for digital interface applications that require I2C communications to expand input/output ports. Its low power consumption and wide operating temperature mean that it can be used in a variety of applications, from home automation to industrial control systems. Plus, its simple working principle makes it easy to understand and implement.

The specific data is subject to PDF, and the above content is for reference