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256Mb (x16)-SDR Synchronous DRAM
16M x 16 bit Synchronous DRAM (SDRAM)
Overview
The 256Mb SDRAM is a high-speed CMOS synchronous DRAM containing 256 Mbits. It is internally configured as 4 Banks of 4M word x 16 DRAM with a synchronous interface (all signals are registered on the positive edge of the clock signal, CLK). Read and write accesses to the SDRAM are burst oriented; accesses start at a selected location and continue for a programmed number of locations in a programmed sequence. Accesses begin with the registration of a BankActivate command which is then followed by a Read or Write command.
The SDRAM provides for programmable Read or Write burst lengths of 1, 2, 4, 8, or full page, with a burst termination option.