CY7C421-15AXCT

Bus Directional:	Uni-Directional
Base Part Number:	7C421
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:	Yes
Programmable Flags Support:	No
Expansion Type:	Depth, Width
Series:	CY7C
Current - Supply (Max):	65mA
Voltage - Supply:	4.5V ~ 5.5V
Access Time:	15ns
Data Rate:	50MHz
Function:	Asynchronous
Memory Size:	4.5K (512 x 9)
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction to CY7C421-15AXCTThe CY7C421-15AXCT is a dual port FIFO memory device for use in digital and industrial applications. The FIFO device is organized as a dual port that can transfer data in a synchronized manner or in opposite directions, with low latency and high efficiency. The device features a variety of configurable options including data width, width-of-block, FIFO size, number of bytes to write/read, and a high-speed write pointer address register. It is also PowerWise compatible, which provides power efficiency through dynamic power management.Application Fields of CY7C421-15AXCTThe CY7C421-15AXCT FIFO is ideally suited for use in applications that require high-speed data transfer in both directions and precise synchronization. Examples of such applications include data acquisition, digital video processing and broadcasting, display switching and control, industrial process control, microprocessor communications, networking, and printing.Working Principle of CY7C421-15AXCTCY7C421-15AXCT FIFO consists of two main components: the dual port memory and the pointer logic.The dual-port FIFO consists of a high-speed dual-port static RAM and a pipelined write pointer address register. The dual-port SRAM is used to store the data and the write pointer register is used to identify the current writing location.The pointer logic consists of two blocks: the write pointer logic and the read pointers logic. The write pointer logic contains two separate pointers: one for the write channel and one for the read channel. As the write pointer moves forward, it maintains the data integrity between the two channels and prevents the data from overwriting. The read pointer logic contains two separate pointers: one for the read channel and one for the write channel. As the read pointer moves forward, it maintains the data integrity between the two channels and prevents the read operation from overwriting its own data.In addition to the dual port memory and pointer logic, the CY7C421-15AXCT also features an active TX FIFO mask, a flow control mechanism, and an interrupt capabilities. The active TX FIFO mask allows the user to enable/disable the read/write port, while the flow control mechanism allows the user to enable/disable flow control so that the FIFO will not overflow. Finally, the interrupt capabilities allows the user to enable/disable interrupts in order to generate interrupts when the FIFO reaches specific thresholds. ConclusionIn conclusion, the CY7C421-15AXCT is a dual port FIFO memory device ideal for applications that require high-speed data transfer in both directions and precise synchronization. The CY7C421-15AXCT consists of two main components: the dual port memory and the pointer logic. It also features an active TX FIFO mask, a flow control mechanism, and an interrupt capabilities.

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