72V291L20TF

Bus Directional:	Uni-Directional
Base Part Number:	72V291
Supplier Device Package:	64-TQFP (10x10)
Package / Case:	64-LQFP
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
FWFT Support:	Yes
Retransmit Capability:	Yes
Programmable Flags Support:	Yes
Expansion Type:	Depth, Width
Series:	72V
Current - Supply (Max):	55mA
Voltage - Supply:	3V ~ 3.6V
Access Time:	12ns
Data Rate:	50MHz
Function:	Synchronous
Memory Size:	1.125M (128K x 9)
Part Status:	Obsolete
Packaging:	Tray

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction
The 72V291L20TF is a member of the logic family of FIFOs memory devices. The device is used to store and retrieve data from a dual-port random access memory (DRAM). This memory device is based on the concept of using a bank of dual-ported memories or “banks” to store the data in and out of the 72V291L20TF. Each bank of DRAMs is configured as a dual-ported memory with one port being used for writing data and the other port being used for reading data. The device has 20 input and 20 output ports, which are each connected to 8 banks of DRAMs, giving a total of 320 ports.
Application
The 72V291L20TF is most commonly used in applications such as mainframe computers, minicomputers, workstations and personal computers. The device is especially suited for applications where memory access speed is a priority. The device can also be used for data buffering and for connecting devices to one another in order to improve performance. The device is also suitable for data streaming, as it ensures efficient and reliable data transfer between the processor and the bus. In addition, the device can be used to increase memory capacity and can also be used for memory address translation.
Features
The 72V291L20TF has many features that make it an attractive choice for the above mentioned applications. These include:

• High speed data transfer with 2ns cycle time
• Fairly low power consumption
• 100% read/write throughput
• Low latency access to the stored data
• Support for multiple types of memory, such as SRAM and DRAM
• Mapping capability helps reduce the complexity of accessing data
• Low voltage operation
• Extended temperature range
• Fault tolerance through parity strips

Working Principle
The 72V291L20TF relies on a novel concept of banked dual-port random access memory to store and retrieve data. This memory device is based on the concept of using a bank of dual-ported memories or “banks” to store the data in and out of the 72V291L20TF. Each bank of DRAMs is configured as a dual-ported memory with one port being used for writing data and the other port being used for reading data. The device has 20 input and 20 output ports, which are each connected to 8 banks of DRAMs, giving a total of 320 ports. The data input and output are connected to the individual DRAM banks through separate ports. All write operations come through the input ports and all read operations come through the output ports. When data is written, it is stored in the banks in row and column addressable locations. Each row comprises 128 bytes of data and each column comprises two bytes of data. The device can store up to 2 megabytes of data and the DRAMs are refreshed at regular intervals to ensure data integrity. The device employs a FIFO principle, which ensures that the data output is in the same order as it was written. The device also has an auto-refresh circuit that automatically refreshes the data stored in the DRAMs. This ensures a high degree of data integrity.
Conclusion
The 72V291L20TF is a highly versatile and reliable logic-based FIFO memory device. It is ideally suited for applications that demand high speed data transfer, low latency, fault tolerance and the ability to map memory locations. The device is capable of storing up to 2 megabytes of data and is capable of refreshing the data at regular intervals. The device utilizes a FIFO system which ensures that the data output is in the same order as it was written. In addition, the device has an auto-refresh circuit which automatically refreshes the data stored in its DRAMs. This ensures a high degree of data integrity. The device is most commonly used in applications such as mainframe computers, minicomputers, workstations and personal computers.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description