參數(shù)資料
型號(hào): μPD4564841
廠商: NEC Corp.
英文描述: 64M-bit Synchronous DRAM(64M同步動(dòng)態(tài)RAM)
中文描述: 6400位同步DRAM(6400同步動(dòng)態(tài)RAM)的
文件頁(yè)數(shù): 13/84頁(yè)
文件大?。?/td> 697K
代理商: ΜPD4564841
13
μ
PD4564441, 4564841, 4564163 for Rev. E
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
PD4564xxx 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.
相關(guān)PDF資料
PDF描述
μPD4564323 64M-bit Synchronous DRAM(64M 同步動(dòng)態(tài)RAM)
μPD45D128164 128 M-bit Synchronous DRAM with Double Data Rate(128 同步動(dòng)態(tài)RAM)
μPD45D128442 128 M-bit Synchronous DRAM with Double Data Rate(128 同步動(dòng)態(tài)RAM)
μPD45D128842 128 M-bit Synchronous DRAM with Double Data Rate(128 同步動(dòng)態(tài)RAM)
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