1M x 32Bit x 4 Banks Graphic Double Data Rate Synchronous DRAM with Bi-directional Data Strobe and DLL

GENERAL DESCRIPTION

FOR 1M x 32Bit x 4 Bank DDR SDRAM

The K4D26323QG is 134,217,728 bits of hyper synchronous data rate Dynamic RAM organized as 4 x1,048,576 words by 32 bits, fabricated with SAMSUNG’s high performance CMOS technology. Synchronous features with Data Strobe allow extremely high performance up to 3.6GB/s/chip. I/O transactions are possible on both edges of the clock cycle. Range of operating frequencies, programmable burst length and programmable latencies allow the device to be useful for a variety of high performance memory system applications.

FEATURES

? 1.8V ± 0.1V power supply for device operation

? 1.8V ± 0.1V power supply for I/O interface

? SSTL_18 compatible inputs/outputs

? 4 banks operation

? MRS cycle with address key programs

-. Read latency 3, 4, 5 and 6 (clock)

-. Burst length (2, 4 and 8)

-. Burst type (sequential & interleave)

? All inputs except data & DM are sampled at the positive going edge of the system clock

? Differential clock input

? No Wrtie-Interrupted by Read Function

? 4 DQS’s ( 1DQS / Byte )

? Data I/O transactions on both edges of Data strobe

? DLL aligns DQ and DQS transitions with Clock transition

? Edge aligned data & data strobe output

? Center aligned data & data strobe input

? DM for write masking only

? Auto & Self refresh

? 32ms refresh period (4K cycle)

? 144-Ball FBGA

? Maximum clock frequency up to 500MHz

? Maximum data rate up to 1.0Gbps/pin