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參數(shù)資料
| 型號(hào)： | HM5264165A60 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 64M LVTTL interface SDRAM 133 MHz/100 MHz |
| 中文描述： | 6400 LVTTL接口SDRAM的133 MHz/100 MHz的 |
| 文件頁數(shù)： | 28/67頁 |
| 文件大小： | 870K |
| 代理商： | HM5264165A60 |
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HM5264165F/HM5264805F/HM5264405F-75/A60/B60
28
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)
CLK
Command
Dout
out B3
Address
out B1 out B2
BS
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
CAS
Latency = 3
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)
CLK
Command
Dout
out B3
Address
out B1 out B2
BS
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
CAS
Latency = 3
Burst Length = 4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HM5264165B60 | 64M LVTTL interface SDRAM 133 MHz/100 MHz |
| HM5264165FTT-75 | 64M LVTTL interface SDRAM 133 MHz/100 MHz |
| HM5264805FTT-75 | 64M LVTTL interface SDRAM 133 MHz/100 MHz |
| HM5264405FTT-75 | 64M LVTTL interface SDRAM 133 MHz/100 MHz |
| HM5264165FTT-A60 | 64M LVTTL interface SDRAM 133 MHz/100 MHz |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HM5264165B60 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:64M LVTTL interface SDRAM 133 MHz/100 MHz |
| HM5264165D-B60/4805D-B60/4405D-B60 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:64M LVTTL Interface SDRAM 100 MHz 1-Mword X 1 |
| HM5264165DLTT-80 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x16 SDRAM |
| HM5264165DLTT-B60 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x16 SDRAM |
| HM5264165DTT-80 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x16 SDRAM |
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