72V253L7-5BC

Series:	72V
Packaging:	Tray
Part Status:	Active
Memory Size:	72K (4K x 18)(8K x 9)
Function:	Synchronous
Data Rate:	133.3MHz
Access Time:	5ns
Voltage - Supply:	3.15V ~ 3.45V
Current - Supply (Max):	35mA
Bus Directional:	Uni-Directional
Expansion Type:	Depth, Width
Programmable Flags Support:	Yes
Retransmit Capability:	Yes
FWFT Support:	Yes
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	100-LBGA
Supplier Device Package:	100-CABGA (11x11)
Base Part Number:	72V253

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Introduction

72V253L7-5BC is a family of logic FIFOs memory developed by Cypress. It is widely used in consumer and industrial applications for its fantastic performance and extraordinary reliability. It\'s really remarkable that almost all of the FIFO designs implement a logic clock cycle counter (CPC) principle to manage the memory requests. The basic function of 72V253L7-5BC is to store data, track and increase or decrease memory access speed, making the data transfer efficient and reliable.

Features

The major features of 72V253L7-5BC are the following:

• It uses CPC(Clock Cycle Counter) hardware to manage all the DDR3/3L FIFO Memory requests.
• It is optimized for low power consumption and high speed operations.
• It supports up to 24-bit width data (16 bits x 3) transferring.
• It provides data read and write features with 32-bit async data path.
• It supports up to 2GB of DDR3/3L memory.
• It provides error check and signaling feature for easy debugging.
• 3-state outputs enable quick data transfer from one device to another.

Application Field

The 72V253L7-5BC is designed to meet the high-speed, low-power and reliable requirements of a wide range of applications, such as:

• High-speed data transmission in telecommunication systems.
• Wireless and wired storage applications, in which reliable storage and fast data access is demanded.
• Real-time video and audio data processing.
• High-speed digital signal processing.

Working Principle

72V253L7-5BC is configured with two interface paths, the first one is a 32bit-wide asynchronous data interface for data read and write operations and the second one is a 24bit-wide synchronous Clock Cycle Counter, which is responsible for the FIFO operations. The Clock Cycle Counter (CPC) consists of four input pins and one output pin. The input pins are: READ_REQ (active low request to read data), WRITE_REQ (active low request to write data), READ_EN (active low request to enable data read) and WRITE_EN (active low request to enable data write). The output pin is the chip select pin (CS), which is used to indicate the FIFO memory is ready to access.When a read or write request is enabled, the Clock Cycle Counter (CPC) will start counting the clock cycles until the request is finished and then make the CS signal high to signal the completion of the request. During the FIFO operation, the Clock Cycle Counter (CPC) will detect the data level change for each port and manage the memory access speed. For instance, when a write request is enabled, it will hold the write data for a certain number of clock cycles according to the memory speed and then write them into the FIFO memory. In the meantime, it will keep checking the port status and make sure the data is written completely and will not affect the other memory access operations. In this way, 72V253L7-5BC will guarantee the data transferring reliable and efficient.

Conclusion

To summarize, 72V253L7-5BC is specially designed for FIFO applications which need high speed, low power and extraordinary performance. Its CPC (Clock Cycle Counter) hardware can effectively manage different types of DDR3/3L FIFO Memory requests and guarantee data transferring reliable and efficient. Owing to these features, 72V253L7-5BC can be widely used in most of the consumer and industrial applications.

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