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參數(shù)資料
| 型號： | HB52RD328DC |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 256 MB Unbuffered SDRAM S.O.DIMM(256 MB 未緩沖同步DRAM S.O.DIMM) |
| 中文描述： | 256 MB的無緩沖內(nèi)存的SODIMM（256 MB的未緩沖同步內(nèi)存的SODIMM） |
| 文件頁數(shù)： | 23/68頁 |
| 文件大?。?/td> | 885K |
| 代理商： | HB52RD328DC |
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HB52RD328DC-F
23
Command Operation
Command Truth Table
The SDRAM module recognizes the following commands specified by the
S
,
RE
,
CE
,
W
and address pins.
CKE
Command
Symbol
n - 1 n
S
RE
CE
W
A12/A13 A10
A0
to A11
Ignore command
DESL
H
×
×
×
×
×
×
×
×
×
×
H
×
×
×
×
×
×
×
×
×
×
×
×
No operation
NOP
H
L
H
H
H
Burst stop in full page
BST
H
L
H
H
L
Column address and read command READ
H
L
H
L
H
V
L
V
Read with auto-precharge
READ A
H
L
H
L
H
V
H
V
Column address and write command WRIT
H
L
H
L
L
V
L
V
Write with auto-precharge
WRIT A
H
L
H
L
L
V
H
V
Row address strobe and bank active ACTV
H
L
L
H
H
V
V
V
Precharge select bank
PRE
H
L
L
H
L
V
L
×
×
×
Precharge all bank
PALL
H
L
L
H
L
×
×
H
Refresh
REF/SELF H
V
L
L
L
H
×
Mode register set
Note:
H: V
IH
. L: V
IL
.
×
: V
IH
or V
IL
. V: Valid address input
MRS
H
×
L
L
L
L
V
V
V
Ignore command [DESL]:
When this command is set (
S
is High), the SDRAM module ignore command
input at the clock. However, the internal status is held.
No operation [NOP]:
This command is not an execution command. However, the internal operations
continue.
Burst stop in full-page [BST]:
This command stops a full-page burst operation (burst length = full-page)
and is illegal otherwise. When data input/output is completed for a full page of data, it automatically returns
to the start address, and input/output is performed repeatedly.
Column address strobe and read command [READ]:
This command starts a read operation. In addition,
the start address of burst read is determined by the column address and the bank select address (BA). After
the read operation, the output buffer becomes High-Z.
Read with auto-precharge [READ A]:
This command automatically performs a precharge operation after a
burst read with a burst length of 1, 2, 4 or 8. When the burst length is full-page, this command is illegal.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HB52RF1289E2-75B | x72 SDRAM Module |
| HB52RF1289E2 | 1 GB Registered SDRAM DIMM 128-Mword 】 72-bit, 133 MHz Memory Bus, 2-Bank Module (36 pcs of 64 M 】 4 Components) PC133 SDRAM |
| HB52RF1289E2 | 1 GB Registered SDRAM DIMM(1GB 寄存同步DRAM DIMM) |
| HB52RF329E2 | 256 MB Registered SDRAM DIMM(256 MB 寄存同步DRAM DIMM) |
| HB52RF648DC-B | 512 MB Unbuffered SDRAM S.O.DIMM 64-Mword 】 64-bit, 133/100 MHz Memory Bus, 2-Bank Module (16 pcs of 32 M 】 8 components) PC133/100 SDRAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HB52RD328DC-A6F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x64 SDRAM Module |
| HB52RD328DC-A6FL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x64 SDRAM Module |
| HB52RD328DC-B6F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x64 SDRAM Module |
| HB52RD328DC-B6FL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x64 SDRAM Module |
| HB52RD328DC-F | 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256 MB Unbuffered SDRAM S.O.DIMM 32-Mword × 64-bit, 100 MHz Memory Bus, 2-Bank Module (32 pcs of 16 M × 4 components) PC100 SDRAM |
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