MT48H8M32LFB5-8IT

Ic Sdram 256Mbit 8ns 90vfbga

General Description

The ® 256Mb Mobile SDRAM is a high-speed CMOS, dynamic random-access memory containing 268,435,456-bits. It is internally configured as a quad-bank DRAM with a synchronous interface all signals are registered on the positive edge of the clock signal, CLK. Each of the x16’s 67,108,864-bit banks is organized as 8,192 rows by 512 columns by 16 bits. Each of the x32’s 67,108,864-bit banks is organized as 4,096 rows by 512 columns by 32 bits.

Features

• Fully synchronous; all signals registered on positive edge of system clock

• VDD/VDDQ = 1.70–1.95V

• Internal, pipelined operation; column address can be changed every clock cycle

• Four internal banks for concurrent operation

• Programmable burst lengths: 1, 2, 4, 8, or continuous page1

• Auto precharge, includes concurrent auto precharge

• Auto refresh and self refresh modes

• LVTTL-compatible inputs and outputs

• On-chip temperature sensor to control refresh rate

• Partial-array self refresh PASR

• Deep power-down DPD

• Selectable output drive DS

• 64ms refresh period 8,192 rows