72V201L15J8

Bus Directional:	Uni-Directional
Base Part Number:	72V201
Supplier Device Package:	32-PLCC (14x11.46)
Package / Case:	32-LCC (J-Lead)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
FWFT Support:	No
Retransmit Capability:	No
Programmable Flags Support:	Yes
Expansion Type:	Depth, Width
Series:	72V
Current - Supply (Max):	20mA
Voltage - Supply:	3V ~ 3.6V
Access Time:	10ns
Data Rate:	66.7MHz
Function:	Synchronous
Memory Size:	2.25K (256 x 9)
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction to Logic - FIFOs MemoryFIFOs (First In, First Out) are an important type of logic memory structures used for storage and transfer of data in an ordered sequence. A FIFO memory structure is composed of data registers, address pointers, and control logic. In a FIFO, the oldest data is stored in the first available location and is released the first when the data is needed by the system.Overview of 72V201L15J8The 72V201L15J8 is a FIFO memory device manufactured by Texas Instruments. It is ideal for applications that require large amounts of data storage, fast access, and low power consumption. The 72V201L15J8 has an impressive capacity of 128K words and operates at data rates up to 66MHz. It utilizes a low-power CMOS technology and requires only a single power supply of 3.3V or 5.5V.72V201L15J8 Appcation FieldThe 72V201L15J8 is suitable for a wide range of applications from simple low-performance systems such as low-end microcontrollers, embedded industrial automation applications, to high performance systems like communications and data processing applications.In microcontroller applications, the 72V201L15J8 can be used to store data until it can be processed. It can also be used to store intermediate results, perform large-scale data transfers, or provide double buffering for applications that require a higher data rate than the microcontroller can provide.For embedded industrial automation applications, the 72V201L15J8 can be used to store and transmit monitoring and surveillance data or log complete system histories.In communications applications, the 72V201L15J8 can be used to buffer information between different layers or segments of a data link. It can also be used for high-speed packet buffering and packet synchronization.In data processing applications, the 72V201L15J8 can be used for data storage and memory caching for large data numbers.72V201L15J8 Working PrincipleThe 72V201L15J8 uses a dual counter FIFO architecture. This architecture is composed of two parallel FIFO memories, one that is used as a read FIFO and the other as a write FIFO. Both FIFOs can be written and read simultaneously, allowing the device to perform in-place data buffering and synchronization.The read FIFO is an 8-bit wide memory and the write FIFO is an 11-bit wide memory. These two FIFOs are connected to two separate address counters and a control and logic block. The address counters keep track of the location of data in the FIFO and the control block converts the write and read commands into appropriate operations.The read address counter is incremented each time a read operation is performed and decreased whenever a write operation is performed. The write address counter is incremented each time a write operation is performed and decreased whenever a read operation is performed.The control logic block also handles the FIFO level flag and other control signals, including the empty and full flags, and the reset control signal. The FIFO has two separate read and write outputs and a multiplexer is used to select either the read output or the write output.ConclusionThe 72V201L15J8 is an excellent FIFO memory device that can be used in a wide range of applications. It utilizes a dual counter architecture and operates at data rates up to 66MHz. It is powered by a single power supply of 3.3V or 5.5V and requires only a low-power CMOS technology. Thanks to its impressive capacity of 128K words it can be used in both low-end microcontroller and high-performance data processing applications.

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