特性 Features

? SRAM-type interface

? Double-data-rate architecture

? PLL circuitry

? Cycle time: 1.875 ns @ tRC = 15 ns

2.5 ns @ tRC = 15 ns

2.5 ns @ tRC = 20 ns

3.3 ns @ tRC = 20 ns

? Non-multiplexed addresses

? Multiplexing option is available.

? Data mask for WRITE commands

? Differential input clocks (CK and CK#)

? Differential input data clocks (DK and DK#)

? Data valid signal (QVLD)

? Programmable burst length: 2 / 4 / 8 (x9 / x18)

? User programmable impedance output (25 Ω - 60 Ω)

? JTAG boundary scan