參數(shù)資料
型號: HYB25R72180C-745
英文描述: RAMBUS DRAM
中文描述: Rambus的內(nèi)存
文件頁數(shù): 45/76頁
文件大小: 1218K
代理商: HYB25R72180C-745
2002-05-06
Page 45 of 76
HYB25D128400/800/160AT(L)
128-Mbit Double Data Rate SDRAM
Truth Table 2: Clock Enable (CKE)
1. CK
E
n is the logic state of CK
E
at clock edge n: CK
E
n-1 was the state of CK
E
at the previous clock edge.
2. Current state is the state of the DDR SDRAM immediately prior to clock edge n.
3. COMMA
N
D n is the command registered at clock edge n, and ACTIO
N
n is a result of COMMA
N
D n.
4. All states and sequences not shown are illegal or reserved.
Current State
CK
E
n-1
CK
E
n
Command n
Action n
N
otes
Previous
Cycle
Current
Cycle
Self Refresh
L
L
X
Maintain Self-Refresh
Self Refresh
L
H
Deselect or
N
OP
E
xit Self-Refresh
1
Power Down
L
L
X
Maintain Power-Down
Power Down
L
H
Deselect or
N
OP
E
xit Power-Down
All Banks Idle
H
L
Deselect or
N
OP
Precharge Power-Down
E
ntry
All Banks Idle
H
L
AUTO R
E
FR
E
S
H
Self Refresh
E
ntry
Bank(s) Active
H
L
Deselect or
N
OP
Active Power-Down
E
ntry
H
H
See “Truth Table 3: Current State
Bank n - Command to Bank n
(Same Bank)” on page 46
1. Deselect or
N
OP commands should be issued on any clock edges occurring during the Self Refresh
E
xit (t
X
S
N
R
) period. A mini-
mum of 200 clock cycles are needed before applying a read command to allow the DLL to lock to the input clock.
相關(guān)PDF資料
PDF描述
HYB25R72180C-750 RAMBUS DRAM
HYB25D128400AT-8 ?128Mb (32Mx4) DDR200 (2-2-2)?
HYB25D128800AT-7 ?128Mb (16mx8) DDR266A (2-3-3)?
HYB25D128800AT-8 ?128Mb (16Mx8) DDR200 (2-2-2)?
HYB25D128800T-7 ?128Mb (16Mx8) DDR 266A (2-3-3)?
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HYB3116160BSJ 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:1M x 16-Bit Dynamic RAM 1k & 4k -Refresh
HYB3116160BSJ-50 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:1M x 16-Bit Dynamic RAM 1k & 4k -Refresh
HYB3116160BSJ-60 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:1M x 16-Bit Dynamic RAM 1k & 4k -Refresh
HYB3116160BSJ-70 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:1M x 16-Bit Dynamic RAM 1k & 4k -Refresh
HYB3116160BST-50 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:1M x 16-Bit Dynamic RAM 1k & 4k -Refresh