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參數(shù)資料
| 型號： | HB52R329E2 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 256 MB Registered SDRAM DIMM(256 MB 寄存同步DRAM DIMM) |
| 中文描述： | 注冊使用256 MB SDRAM的內(nèi)存（256 MB的寄存同步的DRAM內(nèi)存） |
| 文件頁數(shù)： | 41/67頁 |
| 文件大?。?/td> | 630K |
| 代理商： | HB52R329E2 |
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HB52R329E2-D
41
Command Intervals
Read command to Read command interval:
1. Same bank, same ROW address:
When another read command is executed at the same ROW address
of the same bank as the preceding read command execution, the second read can be performed after an
interval of no less than 1 clock. Even when the first command is a burst read that is not yet finished, the
data read by the second command will be valid.
READ to READ Command Interval
(same ROW address in same bank)
CK
Command
Dout
out B3
Address
out B1 out B2
BA
ACTV
Row
Column A
READ
READ
Column B
out A0 out B0
Bank0
Active
Column =A
Read
Column =B
Read
Column =A
Dout
Column =B
Dout
CE
Latency = 4
Burst Length = 4
Bank 0
2. Same bank, different ROW address:
When the ROW address changes on same bank, consecutive
read commands cannot be executed; it is necessary to separate the two read commands with a precharge
command and a bank-active command.
3. Different bank:
When the bank changes, the second read can be performed after an interval of no less
than 1 clock, provided that the other bank is in the bank-active state. Even when the first command is a
burst read that is not yet finished, the data read by the second command will be valid.
READ to READ Command Interval
(different bank)
CK
Command
Dout
out B3
Address
out B1 out B2
BA
ACTV
Row 0
Row 1
ACTV
READ
Column A
out A0 out B0
Bank0
Active
Bank3
Active
Bank0
Read
Bank3
Read
READ
Column B
Bank0
Dout
Bank3
Dout
CE
Latency = 4
Burst Length = 4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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) |
| 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) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HB52R329E22-A6F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x72 SDRAM Module |
| HB52R329E22-B6F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x72 SDRAM Module |
| HB52R329E22-F | 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256 MB Registered SDRAM DIMM 32-Mword × 72-bit, 100 MHz Memory Bus, 2-Bank Module (36 pcs of 16 M × 4 Components) PC100 SDRAM |
| HB52R329E2-B6 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x72 SDRAM Module |
| HB52R649E1U-A6B | 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512 MB Registered SDRAM DIMM 64-Mword × 72-bit, 100 MHz Memory Bus, 1-Bank Module (18 pcs of 64 M × 4 Components) PC100 SDRAM |
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