參數(shù)資料
型號: KM416L8031BT-G(F)Z
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: DDR SDRAM Specification Version 0.61
中文描述: DDR SDRAM的規(guī)格版本0.61
文件頁數(shù): 34/53頁
文件大小: 669K
代理商: KM416L8031BT-G(F)Z
- 34 -
REV. 1.0 November. 2. 2000
128Mb DDR SDRAM
5. Functional Truth Table
Current State
CS
RAS CAS
WE
Address
Command
Action
PRECHARGE
STANDBY
L
H
H
L
X
Burst Stop
ILLEGAL*2
L
H
L
X
BA, CA, A
10
READ/WRITE
ILLEGAL*2
L
L
H
H
BA, RA
Active
Bank Active, Latch RA
L
L
H
L
BA, A
10
PRE/PREA
ILLEGAL*4
L
L
L
H
X
Refresh
AUTO-Refresh*5
L
L
L
L
Op-Code, Mode-Add
MRS
Mode Register Set*5
ACTIVE
STANDBY
L
H
H
L
X
Burst Stop
NOP
L
H
L
H
BA, CA, A
10
READ/READA
Begin Read, Latch CA,
Determine Auto-Precharge
Begin Write, Latch CA,
Determine Auto-Precharge
Bank Active/ILLEGAL*2
L
H
L
L
BA, CA, A
10
WRITE/WRITEA
L
L
H
H
BA, RA
Active
L
L
H
L
BA, A
10
PRE/PREA
Precharge/Precharge All
L
L
L
H
X
Refresh
ILLEGAL
L
L
L
L
Op-Code, Mode-Add
MRS
ILLEGAL
READ
L
H
H
L
X
Burst Stop
Terminate Burst
L
H
L
H
BA, CA, A
10
READ/READA
Terminate Burst, Latch CA,
Begin New Read, Determine
Auto-Precharge*3
L
H
L
L
BA, CA, A
10
WRITE/WRITEA ILLEGAL
L
L
H
H
BA, RA
Active
Bank Active/ILLEGAL*2
L
L
H
L
BA, A
10
PRE/PREA
Terminate Burst, Precharge
L
L
L
H
X
Refresh
ILLEGAL
L
L
L
L
Op-Code, Mode-Add
MRS
ILLEGAL
Table 9-1. Functional truth table
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