AS4C16M16SA-6BIN Memory Size, Alliance Memory AS4C16M16SA-6BIN, SDRAM 256Mbit Surface Mount, 166MHz, 54-Pin TFBGA

The Alliance Memory 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.
Fast access time from clock: 5/5.4 nsFast clock rate: 166/143 MHzFully synchronous operationInternal pipelined architecture4M word x 16-bit x 4-bank