參數(shù)資料
型號(hào)： HM5264405D
廠商： Hitachi,Ltd.
英文描述： 64M LVTTL interface SDRAM(64M LVTTL接口同步DRAM)
中文描述： 6400 LVTTL接口的SDRAM（6400 LVTTL接口同步的DRAM）
文件頁(yè)數(shù)： 29/67頁(yè)
文件大?。?/td> 615K
代理商： HM5264405D
HM5264165D-A60, HM5264805D-A60, HM5264405D-A60
29
Write command to Write command interval:
1. Same bank, same ROW address:
When another write command is executed at the same ROW
address of the same bank as the preceding write command, the second write can be performed after an
interval of no less than 1 clock. In the case of burst writes, the second write command has priority.
WRITE to WRITE Command Interval
(same ROW address in same bank)
CLK
Command
Din
in B3
Address
in B1
in B2
BS
ACTV
Row
Column A
WRIT
WRIT
Column B
in A0
in B0
Bank0
Active
Column =A
Write
Column =B
Write
Burst Write Mode
Burst Length = 4
Bank 0
2. Same bank, different ROW address:
When the ROW address changes, consecutive write commands
cannot be executed; it is necessary to separate the two write commands with a precharge command and a
bank-active command.
3. Different bank:
When the bank changes, the second write can be performed after an interval of no less
than 1 clock, provided that the other bank is in the bank-active state. In the case of burst write, the second
write command has priority.
WRITE to WRITE Command Interval
(different bank)
CLK
Command
Din
in B3
Address
in B1
in B2
BS
ACTV
Row 0
Row 1
ACTV
WRIT
Column A
in A0
in B0
Bank0
Active
Bank3
Active
Bank0
Write
Bank3
Write
WRIT
Column B
Burst Write Mode
Burst Length = 4
相關(guān)PDF資料
PDF描述
HM5264165D 64M LVTTL interface SDRAM(64M LVTTL接口同步DRAM)
HM5264805D 64M LVTTL interface SDRAM(64M LVTTL接口同步DRAM)
HM5264405F 64M LVTTL interface SDRAM(64M LVTTL接口同步DRAM)
HM5264805F-75 Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT06; No. of Contacts:36; Connector Shell Size:22; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Body Style:Straight
HM5264805F-A60 Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT06; No. of Contacts:36; Connector Shell Size:22; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Body Style:Straight
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HM5264405DLTT-80 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x4 SDRAM
HM5264405DLTT-B60 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x4 SDRAM
HM5264405DTT-80 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x4 SDRAM
HM5264405DTT-B60 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x4 SDRAM
HM5264405F 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:64M LVTTL interface SDRAM 133 MHz/100 MHz
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