Functional Description

The CY7C436X2 is a monolithic, high-speed, low-power, CMOS Bidirectional Synchronous (clocked) FIFO memory which supports clock frequencies up to 133 MHz and has read access times as fast as 6 ns. Two independent 1K/4K/16K x 36 dual-port SRAM FIFOs on board each chip buffer data in opposite directions.

Features

• High-speed, low-power, bidirectional, First-In, First-Out (FIFO) memories

• 1Kx36x2 (CY7C43642)

• 4Kx36x2 (CY7C43662)

• 16Kx36x2 (CY7C43682)

• 0.35-micron CMOS for optimum speed/power

• High speed 133-MHz operation (7.5-ns read/write cycle times)

• Low power

— ICC= 100 mA

— ISB= 10 mA

• Fully asynchronous and simultaneous read and write operation permitted

• Mailbox bypass register for each FIFO

• Parallel Programmable Almost Full and Almost Empty flags

• Retransmit function

• Standard or FWFT mode user selectable

• 120-pin TQFP packaging

• Easily expandable in width and depth