參數(shù)資料
型號: μPD45128441
廠商: NEC Corp.
英文描述: 128M-bit Synchronous DRAM(128M 同步DRAM)
中文描述: 128兆位同步DRAM(128M的同步DRAM)的
文件頁數(shù): 13/84頁
文件大?。?/td> 693K
代理商: ΜPD45128441
Preliminary Data Sheet
13
μ
PD45128441, 45128841, 45128163
Fig.7
Self refresh entry command
/WE
/CAS
/RAS
/CS
CKE
CLK
Add
A10
(Bank select)
Fig.8
Burst stop command in Full
Page Mode
/WE
/CAS
/RAS
/CS
CKE
CLK
Add
A10
A12, A13
(Bank select)
H
Fig.9
No operation
/WE
/CAS
/RAS
/CS
CKE
CLK
H
Add
A10
A12, A13
(Bank select)
Self refresh entry command
(/CS, /RAS, /CAS, CKE = Low, /WE = High)
After the command execution, self refresh operation continues while
CKE remains low. When CKE goes high, the
μ
PD45128xxx exits the
self refresh mode.
During self refresh mode, refresh interval and refresh operation are
performed internally, so there is no need for external control.
Before executing self refresh, both banks must be precharged.
Burst stop command
(/CS, /WE = Low, /RAS, /CAS = High)
This command can stop the current burst operation.
No operation
(/CS = Low, /RAS, /CAS, /WE = High)
This command is not an execution command. No operations begin or
terminate by this command.
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