|
|
K4D551638H-LC50のメーカーはSamsungです、この部品の機能は「256Mbit GDDR SDRAM」です。 |
部品番号 | K4D551638H-LC50 |
| |
部品説明 | 256Mbit GDDR SDRAM | ||
メーカ | Samsung | ||
ロゴ | |||
このページの下部にプレビューとK4D551638H-LC50ダウンロード(pdfファイル)リンクがあります。 Total 18 pages
K4D551638H
256M GDDR SDRAM
256Mbit GDDR SDRAM
Revision 1.3
April 2007
Notice
INFORMATION IN THIS DOCUMENT IS PROVIDED IN RELATION TO SAMSUNG PRODUCTS,
AND IS SUBJECT TO CHANGE WITHOUT NOTICE.
NOTHING IN THIS DOCUMENT SHALL BE CONSTRUED AS GRANTING ANY LICENSE,
EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE,
TO ANY INTELLECTUAL PROPERTY RIGHTS IN SAMSUNG PRODUCTS OR TECHNOLOGY. ALL
INFORMATION IN THIS DOCUMENT IS PROVIDED
ON AS "AS IS" BASIS WITHOUT GUARANTEE OR WARRANTY OF ANY KIND.
1. For updates or additional information about Samsung products, contact your nearest Samsung office.
2. Samsung products are not intended for use in life support, critical care, medical, safety equipment, or similar
applications where Product failure could result in loss of life or personal or physical harm, or any military or
defense application, or any governmental procurement to which special terms or provisions may apply.
* Samsung Electronics reserves the right to change products or specification without notice.
-1-
Rev. 1.3 April 2007
1 Page K4D551638H
256M GDDR SDRAM
4M x 16Bit x 4 Banks Graphic Double Data Rate Synchronous DRAM
with Bi-directional Data Strobe and DLL
1.0 FEATURES
• 2.35V ~ 2.7V power supply for device operation
• 2.35V ~ 2.7V power supply for I/O interface
• SSTL_2 compatible inputs/outputs
• 4 banks operation
• MRS cycle with address key programs
-. Read latency 2.5, 3 (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 Write-Interrupted by Read Function
(WIR function can be supported only for 200/166MHz)
• 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
• 64ms refresh period (8K cycle)
• 66pin TSOP-II lead free package(RoHS Compliant)
• Maximum clock frequency up to250MHz
• Maximum data rate up to 500Mbps/pin
2.0 ORDERING INFORMATION
Part NO.
K4D551638H-LC40
K4D551638H-LC50
Max Freq.
250MHz
200MHz
Max Data Rate
500Mbps/pin
400Mbps/pin
Interface
SSTL_2
VDD & VDDQ
2.35V ~
2.7V
Package
66pin TSOP-II
3.0 GENERAL DESCRIPTION
FOR 4M x 16Bit x 4 Bank GDDR SDRAM
The K4D551638H is 268,435,456 bits of hyper synchronous data rate Dynamic RAM organized as 4 x 4,194,304 words by 16 bits, fab-
ricated with SAMSUNG’s high performance CMOS technology. Synchronous features with Data Strobe allow extremely high perfor-
mance up to 1.1GB/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.
-3-
Rev. 1.3 April 2007
3Pages K4D551638H
6.0 BLOCK DIAGRAM (4Mbit x 16I/O x 4 Bank)
256M GDDR SDRAM
CK,CK
ADDR
Bank Select
CK, CK
16
Intput Buffer
Data Input Register
Serial to parallel
LWE
LDMi
4Mx16
4Mx16
4Mx16
4Mx16
32 16
x16
DQi
Column Decoder
Latency & Burst Length
LCKE
LRAS LCBR LWE
LCAS
Programming Register
LWCBR
Timing Register
DLL
CK,CK
LDMi
Data Strobe
CK,CK CKE CS RAS CAS WE LDM UDM
-6-
Rev. 1.3 April 2007
6 Page | |||
ページ | 合計 : 18 ページ | ||
|
PDF ダウンロード | [ K4D551638H-LC50 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
K4D551638H-LC50 | 256Mbit GDDR SDRAM | Samsung |