參數(shù)資料
型號(hào): 256MBDDRSDRAM
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: DDR SDRAM Specification Version 0.3
中文描述: DDR SDRAM的規(guī)格版本0.3
文件頁數(shù): 12/51頁
文件大小: 658K
代理商: 256MBDDRSDRAM
- 12 -
REV. 0.3 November 2. 2000
256Mb DDR SDRAM
Preliminary
3. Functional Description
3.1 Simplified State Diagram
READ
SELF
REFRESH
AUTO
REFRESH
POWER
DOWN
ROW
ACTIVE
READA
WRITEA
WRITEA
PRE
CHARGE
POWER
ON
IDLE
MODE
REGISTER
SET
POWER
DOWN
REFS
REFSX
REFA
MRS
CKEL
CKEH
ACT
CKEL
CKEH
WRITE
WRITEA
PRE
PRE
POWER
APPLIED
READA
PRE
PRE
READA
WRITEA
READA
READ
READ
Automatic Sequence
Command Sequence
BURST STOP
WRITEA : Write with autoprecharge
READA : Read with autoprecharge
Figure 3. State diagram
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