k4d261638k Samsung Semiconductor, Inc., k4d261638k Datasheet - Page 3

• Manufacturer Part Number: k4d261638k
• Description: 128mbit Gddr Sdram
• Manufacturer: Samsung Semiconductor, Inc.

1.0 FEATURES
• 2.5V + 5% power supply for device operation
• 2.5V + 5% power supply for I/O interface
• SSTL_2 compatible inputs/outputs
• 4 banks operation
• MRS cycle with address key programs
• All inputs except data & DM are sampled at the positive going
• Differential clock input
• Wrtie-Interrupted by Read Function
2.0 ORDERING INFORMATION
3.0 GENERAL DESCRIPTION
FOR 2M x 16Bit x 4 Bank DDR SDRAM
The K4D261638K is 134,217,728 bits of hyper synchronous data rate Dynamic RAM organized as 4 x 2,097,152 words by 16 bits, fab-
ricated with SAMSUNG
mance up to 1GB/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.
K4D261638K
2M x 16Bit x 4 Banks Double Data Rate Synchronous DRAM
with Bi-directional Data Strobe and DLL
K4D261638K-LC40
K4D261638K-LC50
* K4D261638K-TC is the Leaded package part number.
* For K4D261638K-LC50, VDD & VDDQ = 2.375V to 2.7V.
edge of the system clock
-. Read latency 2,3(clock)
-. Burst length (2, 4 and 8)
-. Burst type (sequential & interleave)
Part NO.
’
s high performance CMOS technology. Synchronous features with Data Strobe allow extremely high perfor-
Max Freq.
250MHz
200MHz
Max Data Rate
- 3 /19 -
500Mbps/pin
400Mbps/pin
• 2 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)
• Lead free 66pin TSOP-II (RoHS compliant)
• Maximum clock frequency up to 250MHz
• Maximum data rate up to 500Mbps/pin
Interface
SSTL_2
128M GDDR SDRAM
Rev. 1.3 July 2007
66pin TSOP-II
Package