參數(shù)資料
型號: HB52R168DB
廠商: Hitachi,Ltd.
英文描述: 128 MB Unbuffered SDRAM S.O.DIMM(128 MB 未緩沖同步DRAM S.O.DIMM)
中文描述: 128 MB的無緩沖內(nèi)存的SODIMM(128 MB的未緩沖同步內(nèi)存的SODIMM)
文件頁數(shù): 13/57頁
文件大?。?/td> 860K
代理商: HB52R168DB
HB52R168DB-F
13
Relationship Between Frequency and Minimum Latency
HB52R168DB
Parameter
-10F/10FL
Frequency (MHz)
66
t
CK
(ns)
Active command to column command
(same bank)
Symbol
15
Notes
I
RCD
2
1
Active command to active command (same bank)
(
CE
latency = 2)
(
CE
latency = 3)
I
RC
I
RC
7
= [I
RAS
+ I
RP
]
1
8
Active command to precharge command
(same bank)
(
CE
latency = 2)
(
CE
latency = 3)
I
RAS
I
RAS
I
RP
4
1
5
Precharge command to active command
(same bank)
3
1
Write recovery or data input to precharge
command (same bank)
I
DPL
2
1
Active command to active command
(different bank)
I
RRD
2
1
Self refresh exit time
I
SREX
I
APW
2
2
Last data in to active command
(Auto precharge, same bank)
5
= [I
DPL
+ I
RP
]
Self refresh exit to command input
I
SEC
7
= [I
RC
]
3
Precharge command to high impedance
(
CE
latency = 2)
(
CE
latency = 3)
I
HZP
I
HZP
I
APR
2
3
Last data out to active command (auto precharge)
(same bank)
1
Last data out to precharge (early precharge)
(
CE
latency = 2)
(
CE
latency = 3)
I
EP
I
EP
I
CCD
I
WCD
I
DID
–1
–2
Column command to column command
1
Write command to data in latency
0
DQMB to data in
0
DQMB to data out
(
CE
latency = 2)
(
CE
latency = 3)
I
DOD
I
DOD
I
CLE
2
3
CKE0 to CK0/CK1 disable
1
相關(guān)PDF資料
PDF描述
HB52R2569E2 2 GB Registered SDRAM DIMM(2GB 寄存同步DRAM DIMM)
HB52R329E22 256 MB Registered SDRAM DIMM(256 MB 寄存同步DRAM DIMM)
HB52R329E2 256 MB Registered SDRAM DIMM(256 MB 寄存同步DRAM DIMM)
HB52RD168DB 128 MB Unbuffered SDRAM S.O.DIMM(128MB 未緩沖同步DRAM DIMM)
HB52RD328DC 256 MB Unbuffered SDRAM S.O.DIMM(256 MB 未緩沖同步DRAM S.O.DIMM)
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