參數資料
型號： K4H281638A-TCB0
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： 128Mb DDR SDRAM
中文描述： 128MB DDR SDRAM的
文件頁數： 20/53頁
文件大?。?/td> 669K
代理商： K4H281638A-TCB0
- 20 -
REV. 1.0 November. 2. 2000
128Mb DDR SDRAM
3.3.1 Burst Read Operation
Burst Read operation in DDR SDRAM is in the same manner as the current SDRAM such that the Burst read
command is issued by asserting CS and CAS low while holding RAS and WE high at the rising edge of the
clock(CK) after tRCD from the bank activation. The address inputs (A0~A9) determine the starting address for
the Burst. The Mode Register sets type of burst(Sequential or interleave) and burst length(2, 4, 8). The first
output data is available after the CAS Latency from the READ command, and the consecutive data are pre-
sented on the falling and rising edge of Data Strobe(DQS) adopted by DDR SDRAM until the burst length is
completed.
Command
< Burst Length=4, CAS Latency= 2, 2.5 >
READ A
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
DQS
DQ
′
s
CAS Latency=2
Dout 0 Dout 1 Dout 2 Dout 3
DQS
DQ
′
s
CAS Latency=2.5
Dout 0 Dout 1 Dout 2 Dout 3
2
0
1
5
3
4
8
6
7
t
RPRE
t
RPST
CK
CK
3.3 Essential Functionality for DDR SDRAM
The essential functionality that is required for the DDR SDRAM device is described in this chapter
Figure 9. Burst read operation timing
相關PDF資料
PDF描述
K4H281638A-TLA0 128Mb DDR SDRAM
K4H281638A-TLA2 128Mb DDR SDRAM
K4H281638E-TLA2 128Mb DDR SDRAM
K4H281638E-TLB0 128Mb DDR SDRAM
K4H281638M-TCA2 128Mb DDR SDRAM
相關代理商/技術參數
參數描述
K4H281638A-TLA0 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM
K4H281638A-TLA2 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM
K4H281638A-TLB0 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM
K4H281638B-TCA0 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM
K4H281638B-TCA2 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM
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