CY7C4255V-25ASC中文資料賽普拉斯數(shù)據(jù)手冊PDF規(guī)格書

Functional Description

The CY7C4255/65/75/85V are high-speed, low-power, first-in first-out (FIFO) memories with clocked read and write interfaces. All are 18 bits wide and are pin/functionally compatible to the CY7C42X5V Synchronous FIFO family. The CY7C4255/65/75/85V can be cascaded to increase FIFO depth. 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.

Features

? 3.3V operation for low power consumption and easy integration into low-voltage systems

? High-speed, low-power, first-in first-out (FIFO) memories

? 8K x 18 (CY7C4255V)

? 16K x 18 (CY7C4265V)

? 32K x 18 (CY7C4275V)

? 64K x 18 (CY7C4285V)

? 0.35 micron CMOS for optimum speed/power

? High-speed 100-MHz operation (10-ns read/write cycle times)

? Low power

— ICC = 30 mA

— ISB = 4 mA

? Fully asynchronous and simultaneous read and write operation

? Empty, Full, Half Full, and programmable Almost Empty and Almost Full status flags

? Retransmit function

? Output Enable (OE) pin

? Independent read and write enable pins

? Supports free-running 50 duty cycle clock inputs

? Width Expansion Capability

? Depth Expansion Capability

? 64-pin 10x10 STQFP

? Pin-compatible density upgrade to CY7C42X5V-ASC families

? Pin-compatible 3.3V solutions for CY7C4255/65/75/85