PCF8575RGER

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The PCF8575RGER is a high-performance, integrated I/O Expander, included in the interface family of products. It offers an efficient solution for expanding the I/O capabilities of any system that requires both interfaces and UARTs in one package.

The PCF8575RGER allows the user to extend their system’s input/output and serial communication ports with a single device. This I/O expander features 16 bidirectional parallel ports, a selectable UART interface, and a programmable serial output line. Additionally, it requires no external components and creates a low-cost and high-performance solution for expanding I/O capability.

The PCF8575RGER interfaces to 8-bit 8-pin DIP devices. Additionally, the device can be used with 64-bit devices or higher. The device also features an integrated voltage regulator to allow it to operate from a wider variety of power sources. It is compatible with both the 5V and 3V variants of the 8-bit devices.

Application Field

The PCF8575RGER I/O Expander can be used in a variety of applications. It is designed for systems that require both UARTs and interfaces. It is suitable for embedded systems, consumer electronics, industrial equipment, automotive applications, as well as other applications where parallel I/O is required.

The device is suitable for use in applications where the system requires low-power and reliable reduction of active bus lines. It is an ideal solution for applications that require a small form factor, reduced power consumption, low current consumption and cost reduction. Additionally, the device helps to reduce the board space and system design cost by integrating the I/O expansion and UART interface functions.

Working Principle

The PCF8575RGER consists of two 8-bit 8-pin chip packages. The first package is for the parallel I/O interface and consists of sixteen bidirectional ports. The second package is for the UART interface and contains four bidirectional ports for serial communication.

The device is designed for easy integration with a variety of host controllers, microprocessors and development systems. It contains an integrated voltage regulator which allows the device to operate from a wider variety of power sources. It also utilizes two voltage modes which control the maximum speed that the device can operate at.

The PCF8575RGER features a programmable serial output line which is used to control the parallel I/O interface. The user can configure the device to operate in either an open-drain or an active-high mode. This allows the device to support both open-collector and push-pull actions.

The device also contains an integrated programmable counter which is used to track the number of bits that are transmitted from the device to the host. The counter also allows the user to set the number of bits required for a byte to be transmitted. This reduces the total transfer time, which increases the speed of the system.

The PCF8575RGER I/O Expander is a high-performance, cost-effective solution for expanding system I/O capability. It provides the user with an efficient and reliable solution for connecting interfaces and UARTs in one package. Additionally, the device is an excellent solution for low-power and reliable reduction of active bus lines. It is suitable for embedded systems, consumer electronics, industrial equipment, automotive applications, and many other applications where parallel I/O is required.

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