CYPRESS赛普拉斯

CY7C4211说明书.DOC

64/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs

Features

High-speed, low-power, First-In, First-Out (FIFO) memories
64 × 9 (CY7C4421)
256 × 9 (CY7C4201)
512 × 9 (CY7C4211)
1K × 9 (CY7C4221)
2K × 9 (CY7C4231)
4K × 9 (CY7C4241)
8K × 9 (CY7C4251)
High-speed 100-MHz operation (10 ns Read/Write cycle time)
Low power (ICC = 35 mA)
Fully asynchronous and simultaneous Read and Write operation
Empty, Full, and Programmable Almost Empty and Almost Full status flags
TTL-compatible
Expandable in width
Output Enable (OE) pin
Independent Read and Write enable pins
Center power and ground pins for reduced noise
Width-expansion capability
Space saving 7 mm × 7 mm 32-pin TQFP
32-pin PLCC
Pin-compatible and functionally equivalent to IDT72421, 72201, 72211, 72221, 72231, and 72241
Pb-free packages available

Functional Description

The CY7C42X1 are high-speed, low-power FIFO memories with clocked Read and Write interfaces. All are 9 bits wide. The CY7C42X1 are pin-compatible to IDT722X1. Programmable features include Almost Full/Almost Empty flags. These FIFOs provide solutions for a wide variety of data buffering needs, including high-speed data acquisition, multiprocessor interfaces, and communications buffering.

These FIFOs have 9-bit input and output ports that are controlled by separate clock and enable signals. The input port is controlled by a free-running clock (WCLK) and two Write-enable pins (WEN1, WEN2/LD).

When WEN1 is LOW and WEN2/LD is HIGH, data is written into the FIFO on the rising edge of the WCLK signal. While WEN1, WEN2/LD is held active, data is continually written into the FIFO on each WCLK cycle. The output port is controlled in a similar manner by a free-running Read clock (RCLK) and two Read-enable pins (REN1, REN2). In addition, the CY7C42X1 has an output enable pin (OE). The Read (RCLK) and Write (WCLK) clocks may be tied together for single-clock operation or the two clocks may be run independently for asynchronous Read/Write applications. Clock frequencies up to 100 MHz are achievable.

Depth expansion is possible using one enable input for system control, while the other enable is controlled by expansion logic to direct the flow of data.

相关芯片型号对比
Part Number	Bus Width	Density	Depth	Directional	Speed
CY7C4201-10AC	x9	2K	256	Unidirectional	100 MHz
CY7C4201-10JC	x9	2K	256	Unidirectional	100 MHz
CY7C4201-10JCT	x9	2K	256	Unidirectional	100 MHz
CY7C4201-15AC	x9	2K	256	Unidirectional	67 MHz
CY7C4201-15ACT	x9	2K	256	Unidirectional	67 MHz
CY7C4201-15JC	x9	2K	256	Unidirectional	67 MHz
CY7C4201-15JCT	x9	2K	256	Unidirectional	67 MHz
CY7C4201-25AC	x9	2K	256	Unidirectional	40 MHz
CY7C4201-25JC	x9	2K	256	Unidirectional	40 MHz
CY7C4201-25JCT	x9	2K	256	Unidirectional	40 MHz
CY7C4221-10AC	x9	8K	1K	Unidirectional	100 MHz
CY7C4221-10JC	x9	8K	1K	Unidirectional	100 MHz
CY7C4221-10JCT	x9	8K	1K	Unidirectional	100 MHz
CY7C4221-15AC	x9	8K	1K	Unidirectional	67 MHz
CY7C4221-15JC	x9	8K	1K	Unidirectional	67 MHz
CY7C4221-15JCT	x9	8K	1K	Unidirectional	67 MHz
CY7C4221-25AC	x9	8K	1K	Unidirectional	40 MHz
CY7C4221-25JC	x9	8K	1K	Unidirectional	40 MHz
CY7C4221-25JCT	x9	8K	1K	Unidirectional	40 MHz
CY7C4241-10AC	x9	32K	4K	Unidirectional	100 MHz
CY7C4241-10ACT	x9	32K	4K	Unidirectional	100 MHz
CY7C4241-10JC	x9	32K	4K	Unidirectional	100 MHz
CY7C4241-10JCT	x9	32K	4K	Unidirectional	100 MHz
CY7C4241-15AC	x9	32K	4K	Unidirectional	67 MHz
CY7C4241-15ACT	x9	32K	4K	Unidirectional	67 MHz
CY7C4241-15JC	x9	32K	4K	Unidirectional	67 MHz
CY7C4241-15JCT	x9	32K	4K	Unidirectional	67 MHz
CY7C4241-25AC	x9	32K	4K	Unidirectional	40 MHz
CY7C4241-25ACT	x9	32K	4K	Unidirectional	40 MHz
CY7C4241-25JC	x9	32K	4K	Unidirectional	40 MHz
CY7C4241-25JCT	x9	32K	4K	Unidirectional	40 MHz
CY7C4421-10AC	x9	1/2K	64	Unidirectional	100 MHz
CY7C4421-10JC	x9	1/2K	64	Unidirectional	100 MHz
CY7C4421-10JCT	x9	1/2K	64	Unidirectional	100 MHz
CY7C4421-15JC	x9	1/2K	64	Unidirectional	67 MHz
CY7C4421-15JCT	x9	1/2K	64	Unidirectional	67 MHz
CY7C4251-10AC	x9	64K	8K	Unidirectional	100 MHz
CY7C4251-10JCT	x9	64K	8K	Unidirectional	100 MHz
CY7C4251-15AC	x9	64K	8K	Unidirectional	67 MHz
CY7C4251-15ACT	x9	64K	8K	Unidirectional	67 MHz
CY7C4251-15JC	x9	64K	8K	Unidirectional	67 MHz
CY7C4251-15JCT	x9	64K	8K	Unidirectional	67 MHz
CY7C4251-25AC	x9	64K	8K	Unidirectional	40 MHz
CY7C4251-25JCT	x9	64K	8K	Unidirectional	40 MHz
CY7C4231-10AC	x9	16K	2K	Unidirectional	100 MHz
CY7C4231-10ACT	x9	16K	2K	Unidirectional	100 MHz
CY7C4231-10JC	x9	16K	2K	Unidirectional	100 MHz
CY7C4231-10JCT	x9	16K	2K	Unidirectional	100 MHz
CY7C4231-15AC	x9	16K	2K	Unidirectional	67 MHz
CY7C4231-15JC	x9	16K	2K	Unidirectional	67 MHz
CY7C4231-15JCT	x9	16K	2K	Unidirectional	67 MHz
CY7C4231-25AC	x9	16K	2K	Unidirectional	40 MHz
CY7C4231-25JC	x9	16K	2K	Unidirectional	40 MHz
CY7C4231-25JCT	x9	16K	2K	Unidirectional	40 MHz
CY7C4211-10AC	x9	4K	512	Unidirectional	100 MHz
CY7C4211-10JCT	x9	4K	512	Unidirectional	100 MHz
CY7C4211-15AC	x9	4K	512	Unidirectional	67 MHz
CY7C4211-15ACT	x9	4K	512	Unidirectional	67 MHz
CY7C4211-15JC	x9	4K	512	Unidirectional	67 MHz
CY7C4211-15JCT	x9	4K	512	Unidirectional	67 MHz
CY7C4211-25AC	x9	4K	512	Unidirectional	40 MHz
CY7C4211-25JC	x9	4K	512	Unidirectional	40 MHz
CY7C4211-25JCT	x9	4K	512	Unidirectional	40 MHz

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