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參數(shù)資料
| 型號(hào)： | EM422M912VTA |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Replacement for Fairchild part number DM74S244N. Buy from authorized manufacturer Rochester Electronics. |
| 中文描述： | 16兆（2Banks）同步DRAM |
| 文件頁數(shù)： | 10/18頁 |
| 文件大?。?/td> | 833K |
| 代理商： | EM422M912VTA |
Rev.01
16Mb SDRAM
10/18
Current
state
Addr.
Idle
X
X
4. Operative Command Table
Action
Nop or pow er dow n
Nop or pow er dow n
ILLEGAL
ILLEGAL
Row activating
Nop
Refresh or self refresh
Mode register accessing
Nop
Nop
Begin read : Determine AP
Begin w rite : Determine AP
ILLEGAL
Precharge
ILLEGAL
ILLEGAL
Continue burst to end
→
Row active
Continue burst to end
→
Row active
Burst stop
→
Row active
Terminate burst, new read : Determine AP
Terminate burst, start w rite : Determine AP
ILLEGAL
Terminate burst, pre-charging
ILLEGAL
ILLEGAL
Notes
2
2
3
3
BA/CA/A10
BA/CA/A10
BA/RA
BA, A10
X
Op-Code
X
X
BA/CA/A10
BA/CA/A10
BA/RA
BA, A10
X
Op-Code
X
X
X
BA/CA/A10
BA/CA/A10
BA/RA
BA/A10
X
Op-Code
4
Remark
H = High level, L = Low level, X = High or Low level (Don't care)
/CS
H
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
/R
X
H
H
H
L
L
L
L
X
H
H
H
L
L
L
L
X
H
H
H
L
L
L
L
L
/C
X
H
L
L
H
H
L
L
X
H
L
L
H
H
L
L
X
H
H
L
L
H
H
L
L
/W
X
X
H
L
H
L
H
L
X
X
H
L
H
L
H
L
X
H
L
H
L
H
L
H
L
Command
DESL
NOP or BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
DESL
NOP or BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
DESL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
Row active
5
5
3
6
4
Read
7
7, 8
3
4
Write
X
X
X
Continue burst to end
→
Write recovering
Continue burst to end
→
Write recovering
Burst stop
→
Row active
Terminate burst, start read : Determine AP 7, 8
Terminate burst, new w rite : Determine AP 7
ILLEGAL
Terminate burst, pre-charging
ILLEGAL
ILLEGAL
BA/CA/A10
BA/CA/A10
BA/RA
BA/A10
X
Op-Code
7,8
7
3
9
H
L
L
L
L
L
L
L
L
X
H
H
H
L
L
L
L
L
X
H
H
L
L
H
H
L
L
X
H
L
H
L
H
L
H
L
DESL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EM422M912VTB | Replacement for Fairchild part number DM74S40N. Buy from authorized manufacturer Rochester Electronics. |
| EM422M914VTA | Replacement for Fairchild part number DM81LS97AN. Buy from authorized manufacturer Rochester Electronics. |
| EM422M914VTB | 16Mb ( 2Banks ) Synchronous DRAM |
| EM422M922VTA | 16Mb ( 2Banks ) Synchronous DRAM |
| EM422M922VTB | 16Mb ( 2Banks ) Synchronous DRAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EM422M912VTB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16Mb ( 2Banks ) Synchronous DRAM |
| EM422M914VTA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16Mb ( 2Banks ) Synchronous DRAM |
| EM422M914VTB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16Mb ( 2Banks ) Synchronous DRAM |
| EM422M922VTA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16Mb ( 2Banks ) Synchronous DRAM |
| EM422M922VTB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16Mb ( 2Banks ) Synchronous DRAM |
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