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.

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