Alliance Memory AS4C32M16SB-7TCN, SDRAM 512Mbit Surface Mount, 200MHz, 3 V to 3.6 V, 54-Pin TSOP

The Alliance Memory 512Mb SDRAM is a high-speed CMOS synchronous DRAM containing 512 Mbits. It is internally configured as 4 Banks of 8M 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

Auto Refresh and Self Refresh
8192 refresh cycles/64ms
CKE power down mode
Single +3.3V ±0.3V power supply