PCA9534D,518

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

PCA9534D is an 8-bit I/O expander for system expansion. It allows for serial expansion of the I/O capacity of a system, allowing more digital I/O to be added to an existing microcontroller system. The device provides 8 I/O pins which can be easily configured for both input and output operation and configured to either an active-low or active-high logic level.

The PCA9534D device is primarily used in applications needing an I/O expansion port, such as digital audio and video products, industrial process control, data acquisition systems, home appliances, and automotive. It is also commonly used in systems needing a programmable address decoder.

The PCA9534D is part of the PCA9534 family of I/O expanders. This family of devices provides 8 input/output pins that can be configured as either inputs or outputs. The pins are activated with a programmable active-low or active-high logic level. It has advanced low-power management features and a low standby current, allowing it to be used in battery-powered applications.

The primary application field of the PCA9534D is found in the industrial process control applications. Many industries are in need of a system which can expand the existing I/O capacity. This device offers that expansion with its 8 additional I/O pins. The device is also used for system expansion for digital audio and video products as well as for data acquisition systems. It is also increasingly being used for automotive applications, such as vehicle control and lamp control system for enhancing the comfort and safety of driving. Finally, the device is being used in home appliances such as washing machines, dishwashers and air conditioners to control the user interface and data acquisition functions.

In terms of its working principle, PCA9534D is an I/O expander which uses a parallel interface that supports either 8 or 16 bits of data. It is an extension of the general-purpose I/O controller which has its operations specified in the I/O controller manual. The PCA9534D contains both the I/O expander device and the protocol for communication with the host system. It uses an 8-bit address register and a 4-bit control register to send and receive data from the host system. The 8-bit address register is used to select which I/O port will be accessed. The 4-bit control register is used to specify the direction of data flow, read/write data control and interrupt mask. The PCA9534D supports both interrupt-driven and polled operation.

Overall, the PCA9534D is a 8-bit I/O expander commonly used for providing an I/O expansion port in industrial process control, automotive, digital audio and video products, data acquisition systems, home appliances and other applications. Its working principle is based on a parallel interface that supports either 8 or 16-bit data and it uses an 8-bit address register and a 4-bit control register to send and receive data from the host system. This device is an ideal solution for any system needing to increase its I/O capacity with minimum effort.

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