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CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
72-Mbit DDR-II SRAM 4-Word Burst Architecture
Features
Functional Description
• 72-Mbit density (8M x 8, 8M x 9, 4M x 18, 2M x 36) • 300-MHz clock for high bandwidth • 4-Word burst for reducing address bus frequency • Double Data Rate (DDR) interfaces
(data transferred at 600 MHz) @ 300 MHz • Two input clocks (K and K) for precise DDR timing
— SRAM uses rising edges only • Two input clocks for output data (C and C) to minimize
clock-skew and flight-time mismatches • Echo clocks (CQ and CQ) simplify data capture in
high-speed systems • Synchronous internally self-timed writes • 1.8V core power supply with HSTL inputs and outputs • Variable drive HSTL output buffers • Expanded HSTL output voltage (1.