DS4520E

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The DS4520E, a remote I/O expander for the PC/104 family of industrial embedded systems, is a versatile device that facilitates the communication interface between non-PC/104 based peripherals and the features of the in-system bus system. With its modular configuration, the DS4520E can be configured to satisfy the needs of almost any application, allowing for up to eight I/O devices to be connected to the system.

The DS4520E design is based on an addressable I/O configuration, where eight I/O devices are assigned an address, or pin, and data can be read or written to the device by the controller through bus cycles with the address and data. The DS4520E also supports a flexible register set, allowing for individual bits of data to be read or written without the need for a data transfer.

The DS4520E\'s modularity allows for up to eight I/O devices to be connected to the system, including a variety of input and output devices, such as switches, LEDs, relays, and solenoids. The DS4520E includes a number of programmable settings, such as the direction of data transfer and an individual data rate, allowing for flexibility when configuring the device.

The DS4520E also provides a number of advanced features, including the ability to enable and disable the I/O pins and enable and disable interrupt requests. This allows the user to easily control and configure the I/O devices connected to the DS4520E. Additionally, the DS4520E can also be updated with new firmware, providing further flexibility and customization.

The DS4520E is powered by an 8-bit microcontroller, allowing for a separate processor and memory to be used for data manipulation. The microcontroller contains a serial port, which is used to communicate with the host processor and receive commands and data from it. The onboard RAM and ROM can also be used to store information and settings.

The DS4520E operates in two operating modes, Master and Slave, and is configured for either of these modes during system initialization. In Master mode, the DS4520E will generate I/O cycles when a command is received from the host processor, allowing the user to easily control I/O devices directly from the host processor. In Slave mode, the DS4520E will wait for a request from the host processor and respond with the data or settings requested.

The DS4520E application field can be found in a variety of industrial embedded systems, from home automation systems, to automotive applications, to factory automation systems. Thanks to its flexible register set and programmable settings, the DS4520E can be easily configured for any application, allowing for a wide range of I/O devices to be connected to the system.

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