CY7C1141V18

CY7C1141V18 CY7C1156V18 CY7C1143V18 CY7C1145V18 18-Mbit QDR™-II+ SRAM 4-Word Burst Architecture (2.0 Cycle Read Latency) Features Separate Independent read and write data ports ❐ Supports concurrent transactions ■ 300 MHz to 375 MHz clock for high bandwidth ■ 4-Word Burst for reducing address bus frequency ■ Double Data Rate (DDR) interfaces on both read and write ports (data transferred at 750 MHz) at 375 MHz ■ Read latency of 2.0 clock cycles ■ 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 ■ Single multiplexed address input bus latches address inputs for both read and write ports ■ Separate Port Selects for depth expansion ■ Data valid pin (QVLD) to indicate valid data on the output ■ Synchronous internally self-timed writes ■ Available in x8, x9, x18, and x36 configurations ■ Full data coherency providing most current data [1] ■ Core VDD = 1.8V ± 0.1V; IO VDDQ = 1.4V to VDD ■ Available in 165-Ball FBGA package (13 x 15 x 1.4 mm) ■ Offered in both Pb-free and non Pb-free packages ■ Variable drive HSTL output buffers ■ JTAG 1149.1 compatible test access port ■ Delay Lock Loop (DLL) for accurate data placement ■ Functional Description The CY7C1141V18, CY7C1156V18, CY7C1143V18, and CY7C1145V18 are 1.8V Synchronous Pipelined SRAMs, equipped with QDR™-II+ architecture. QDR-II+ architecture consists of two separate ports to access the memory array. The read port has dedicated...