ALLIANCE MEMORY AS4C32M16SB-7BIN DRAM, SDRAM, 512 Mbit, 32M x 16bit, 143 MHz, FBGA, 54 Pins

AS4C32M16SB-7BIN 512Mb SDRAM is a high-speed CMOS synchronous DRAM containing 512Mbits. 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 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 bank activate command which is then followed by a read or write command. An auto precharge function may be enabled to provide a self-timed row precharge that is initiated at the end of the burst sequence. The refresh functions, either auto or self refresh are easy to use. By having a programmable mode register, the system can choose most suitable modes to maximize its performance. It is well suited for applications requiring high memory bandwidth and particularly well suited to high performance PC applications.

• Fully synchronous operation, internal pipelined architecture, 8M word x 16-bit x 4-bank
• Programmable mode registers, CAS latency: 2 or 3, burst length: 1, 2, 4, 8, or full page
• Burst type: sequential or interleaved, burst stop function
• Auto refresh and self refresh, 8192 refresh cycles/64ms
• CKE power down mode, single +3.3V ±0.3V power supply
• LVTTL interface
• 143MHz frequency
• 54 ball FBGA package
• Industrial temperature range from -40°C to 85°C