Functional Description

The CY7C441 and CY7C443 are high-speed, low-power, first-in first-out (FIFO) memories with clocked read and write interfaces. Both FIFOs are 9 bits wide. The CY7C441 has a 512 word by 9 bit memory array, while the CY7C443 has a 2048 word by 9 bit memory array. These devices provide solutions for a wide variety of data buffering needs, including high-speed data acquisition, multiprocessor interfaces, and communications buffering.

特性 Features

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

? 512 x 9 (CY7C441)

? 2,048 x 9 (CY7C443)

? 0.65 micron CMOS for optimum speed/power

? High-speed 83-MHz operation (12 ns read/write cycle time)

? Low power — ICC=70 mA

? Fully asynchronous and simultaneous read and write operation

? Empty, Almost Empty, and Almost Full status flags

? TTL compatible

? Parity generation/checking

? Independent read and write enable pins

? Supports free-running 50 duty cycle clock inputs

? Center power and ground pins for reduced noise

? Width Expansion Capability

? Available in PLCC packages