CY7C4251V-15AXCT

Bus Directional:	Uni-Directional
Base Part Number:	7C4251
Supplier Device Package:	32-TQFP (7x7)
Package / Case:	32-TQFP
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
FWFT Support:	No
Retransmit Capability:	No
Programmable Flags Support:	No
Expansion Type:	Depth, Width
Series:	CY7C
Current - Supply (Max):	20mA
Voltage - Supply:	3V ~ 3.6V
Access Time:	11ns
Data Rate:	66.7MHz
Function:	Synchronous
Memory Size:	72K (8K x 9)
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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CY7C4251V-15AXCT application field and working principleMemory and FIFOs are a critical component of digital logic designs. While memories are often used to retain data, FIFOs are almost exclusively used in applications requiring data to be transferred from one component to another, such as between CPUs and buses. FIFOs are often used to reduce the burden on the receiving component, as it would otherwise be required to manage data which passes through it at high speed or with high volumes.The Cypress Semiconductor CY7C4251V-15AXCT is a 1-MByte FIFO that is designed as a ‘drop-in’ solution for serial communication between two logic devices, such as a CPU and a Microcontroller Unit (MCU). The CY7C4251V-15AXCT FIFO features 8 independent channels, each capable of supporting an 8-bit data stream. These channels are staggered in order to reduce bandwidth when transferring large amounts of data. The architecture includes two separate 64-bit ports for memory block write addresses, read/write addresses, and write strobes.In addition to being able to operate asynchronous from the host system, the CY7C4251V-15AXCT FIFO can also support multiple bus masters, allowing the data to be passed between multiple devices. The architecture also incorporates a programmable register interface, allowing the user to alter parameters such as the serial clock frequency, data width and port width, as well as setting interrupt thresholds.Applications for the CY7C4251V-15AXCT FIFO may include embedded systems and microcontrollers, embedded systems communications, ASICs, and computer peripherals. The working principle of the CY7C4251V-15AXCT FIFO is quite simple. The architecture maintains two 64-bit memory blocks, one for writes and one for reads. Data written to the write memory block is then moved to the read memory block where it can be accessed by other components. When the data is accessed, it is shifted down by 8 bits per clock cycle. When an interrupt is generated, it means there is a data overflow or underflow, signifying that the FIFO is either full or empty, respectively. The CY7C4251V-15AXCT FIFO is also capable of self-timed read/write operations, meaning that the host system does not need to be continuously attentive for data to be transferred. This allows for more efficient communication between components, as data is transferred only when required. Overall, the CY7C4251V-15AXCT FIFO is an ideal solution for situations where data needs to be transferred quickly and efficiently between two components, while also reducing the task burden on the receiving component. Its efficient architecture, programmable interface and capabilities make it an excellent choice for digital logic designs.

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