72215LB15PFI8

FIFOs (first-in-first-out) memory are used in a variety of applications. In particular, 72215LB15PFI8 application field and working principle are often discussed in the context of hardware and networking devices, where they are used to manage the flow of data between two devices. In this article, we\'ll explore the specific details of this particular FIFO\'s application field and working principles.

Application Field

The 72215LB15PFI8 is a FIFO implemented in a CMOS logic integrated circuit. Specifically, it is designed to store zero- or two-cycle data frames and serves as a buffer between a microprocessor and peripheral devices such as display controllers, memory, etc. It is used to make data transfers more efficient by reducing the number of cycles a processor needs to wait for a response from the peripheral device. This FIFO resides on one of the processor\'s IO cards, connected to the device\'s bus.Apart from this application, the 72215LB15PFI8 is also used in PC cards, modems and other communication equipment, where it is used to buffer data before it is sent out by the processor. Additionally, it is often used in robotics applications, where it is activated when certain conditions are met. Moreover, it is used in automotive electronics and in control systems to help manage and transfer data between various devices.

Working Principle

The 72215LB15PFI8 is a static FIFO, meaning that it does not need to be constantly refreshed with new data. Instead, it stores data when it receives it and empties once it is used up. The FIFO stores one-byte wide data in a 4-word-deep memory, allowing it to work much faster than typical first-in-first-out (FIFO) memories.The 72215LB15PFI8 can accept up to four bytes of data at a time, with the data stored in four 8-bit words (32 bits in total). The FIFO knows when four bytes have been written by checking the write finish pin, and will hold this data until it is read. Data read from the FIFO is empty as soon as it is written out. The data-read and data-write cycles are managed by the processor through the use of two separate clocks, which ensures that data is written in the correct order and that both processors are aware that the data read and written is valid. An optional interrupt pin is available to notify the processor when the FIFO is full or empty, and can be tied to an interrupt service routine.In addition, the 72215LB15PFI8 provides built-in protection features that are designed to prevent data corruption or data integrity loss. These features include an interlock circuit, a parity check and a programmable underflow protection.Finally, the 72215LB15PFI8 is a low-voltage FIFO, meaning that it can operate at a lower voltage than traditional FIFOs, with typical application voltages ranging from 1.5V - 3.3V.