CY7C1668KV18

CY7C1668KV18 CY7C1670KV18 144-Mbit DDR II+ SRAM Two-Word Burst Architecture (2.5 Cycle Read Latency) 144-Mbit DDR II+ SRAM Two-Word Burst Architecture (2.5 Cycle Read Latency) Features ■ 144-Mbit density (8 M × 18, 4 M × 36) ■ 550-MHz clock for high bandwidth ■ Two-word burst for reducing address bus frequency ■ Double data rate (DDR) interfaces (data transferred at 1100 MHz) at 550 MHz ■ Available in 2.5-clock cycle latency ■ Two input clocks (K and K) for precise DDR timing ❐ SRAM uses rising edges only ■ Echo clocks (CQ and CQ) simplify data capture in high-speed systems ■ Data valid pin (QVLD) to indicate valid data on the output ■ Synchronous internally self-timed writes ■ DDR II+ operates with 2.5-cycle read latency when DOFF is asserted HIGH ■ Operates similar to DDR I device with one cycle read latency when DOFF is asserted LOW ■ Core VDD = 1.8 V ± 0.1 V; I/O VDDQ = 1.4 V to VDD[1] ❐ Supports both 1.5-V and 1.8-V I/O supply ■ High-speed transce...