资 源 简 介
Features• High-speed, low-power, first-in first-out (FIFO)memories• 64 x 18 (CY7C4425)• 256 x 18 (CY7C4205)• 512 x 18 (CY7C4215)• 1K x 18 (CY7C4225)• 2K x 18 (CY7C4235)• 4K x 18 (CY7C4245)• High-speed 100-MHz operaTIon (10 ns read/write cycleTIme)• Low power (ICC =45 mA)• Fully asynchronous and simultaneous read and writeoperaTIon• Empty, Full, Half Full, and Programmable AlmostEmpty/Almost Full status flags• TTL-compaTIble• Retransmit function• Output Enable (OE) pin• Independent read and write enable pins• Center power and ground for reduced noise• Supports free-running 50% duty cycle clock inputs• Width Expansion Capability• Depth Expansion Capability• Space saving 64-pin 10x10 TQFP, and 14x14 TQFP• 68-pin PLCCFunctional DescriptionThe CY7C42X5 are high-speed, low-power, first-in first-out(FIFO) memories with clocked read and write interfaces. Allare 18 bits wide and are pin/functionally compatible toIDT722x5. The CY7C42X5 can be cascaded to increase FIFOdepth. Programmable features include Almost Full/AlmostEmpty flags. These FIFOs provide solutions for a wide varietyof data buffering needs, including high-speed data acquisition,multiprocessor interfaces, and communications buffering.
