72821L25PFI

Bus Directional:	Bi-Directional
Base Part Number:	72821
Supplier Device Package:	64-TQFP (14x14)
Package / Case:	64-LQFP
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
FWFT Support:	No
Retransmit Capability:	No
Programmable Flags Support:	Yes
Expansion Type:	Depth, Width
Series:	7200
Current - Supply (Max):	60mA
Voltage - Supply:	4.5V ~ 5.5V
Access Time:	15ns
Data Rate:	40MHz
Function:	Synchronous
Memory Size:	18K (1K x 9 x 2)
Part Status:	Obsolete
Packaging:	Tray

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72821L25PFI Application Field and Working Principle

The 72821L25PFI is a type of specialized FIFO, or first-in, first-out memory, used in embedded systems and other applications requiring buffering or data transfer. It is designed to easily and reliably store and transfer data from one component to another, without the need for complex data manipulation or other software overhead.FIFOs are a type of logic memory. Logic memory is a type of nonvolatile memory which stores information using logic codes instead of physical components like transistors. FIFOs use an easily recognized sequence of codes in order to store and retrieve data from any given location. Data can be stored and retrieved in either binary or hexadecimal format, allowing for easy manipulation and storage of data.The 72821L25PFI is a type of FIFO that has been specifically designed for use in embedded systems. It is a five-stage full-depth logic FIFO. It supports variable rated capacities up to 25 words with a data width of 8, 16, 32, or 64 bits. It is also capable of working in both synchronous and asynchronous modes.In asynchronous mode, the 72821L25PFI is operated with the rising-edge of a clock signal. On the rising edge of a clock, the logic levels of the data lines are read and stored in the first-in-first-out memory. The logic levels are then read from the first-in-first-out memory by a set of output lines. This allows for the transfer of data from one component to another without the need for complex data manipulation or software overhead.In synchronous mode, the 72821L25PFI can operate at any frequency up to the maximum speed of the memory device. Data is read from the memory device on the rising edge of a clock signal, and the rising edge of the data-valid signal signals that the data is valid and ready for transfer. In this way, data can be transferred quickly and accurately from one component to another.The 72821L25PFI also has an optional memory write enable signal. This signal is used to enable the writing of data to the memory device. This signal must be asserted in order to write data to the device. An active low signal is used to enable the writing of data, while an active high signal disables writing.The 72821L25PFI is an ideal solution for any embedded system requiring fast and reliable data transfer. It allows for the transfer of data between two components without the need for complex data manipulation or software overhead, making it an ideal solution for embedded applications where space is limited and data throughput is important.

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