參數(shù)資料
型號(hào): MH64S72AWJA-7
廠商: Mitsubishi Electric Corporation
英文描述: 4,831,838,208-BIT ( 67,108,864-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
中文描述: 4831838208位(67108864 - Word的72位)同步動(dòng)態(tài)隨機(jī)存儲(chǔ)器
文件頁數(shù): 5/56頁
文件大?。?/td> 936K
代理商: MH64S72AWJA-7
4,831,838,208-BIT ( 67,108,864-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
MH64S72AWJA -6,-7,-8
17/Mar. /2000
MIT-DS-372-0.2
Preliminary Spec.
Some contents are subject to change without notice.
MITSUBISHI LSIs
MITSUBISHI
ELECTRIC
5
BASIC FUNCTIONS
The MH64S72AWJA provides basic functions,bank(row)activate,burst read / write,
bank(row)precharge,and auto / self refresh.
Each command is defined by control signals of /RAS,/CAS and /WE at CK rising edge.
In addition to 3 signals,/S,CKE and A10 are used as chip select,refresh option,and
precharge option,respectively.
To know the detailed definition of commands please see the command truth table.
/S
Chip Select : L=select, H=deselect
/RAS
Command
/CAS
Command
/WE
Command
CKE
Refresh Option @refresh command
A10
Precharge Option @precharge or read/write command
CK
define basic commands
Activate(ACT) [/RAS =L, /CAS = /WE =H]
Read(READ) [/RAS =H,/CAS =L, /WE =H]
Write(WRITE) [/RAS =H, /CAS = /WE =L]
Precharge(PRE) [/RAS =L, /CAS =H,/WE =L]
Auto-Refresh(REFA) [/RAS =/CAS =L, /WE =CKE =H]
ACT command activates a row in an idle bank indicated by BA.
READ command starts burst read from the active bank indicated by BA.First output
data appears after /CAS latency. When A10 =H at this command,the bank is
deactivated after the burst read(auto-precharge,
READA
).
WRITE command starts burst write to the active bank indicated by BA. Total data
length to be written is set by burst length. When A10 =H at this command, the bank is
deactivated after the burst write(auto-precharge,
WRITEA
).
PRE command deactivates the active bank indicated by BA. This command also
terminates burst read / write operation. When A10 =H at this command, both banks
are deactivated(precharge all,
PREA
).
REFA command starts auto-refresh cycle. Refresh address including bank address
are generated internally. After this command, the banks are precharged automatically.
相關(guān)PDF資料
PDF描述
MH64S72AWJA-8 4,831,838,208-BIT ( 67,108,864-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
MH64S72VJG-5 4,831,838,208-BIT ( 67,108,864-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
MH64S72VJG-6 4,831,838,208-BIT ( 67,108,864-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
MH64S72QJA-6 4,831,838,208-BIT ( 64,108,864-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
MH64S72QJA-7 4,831,838,208-BIT ( 67,108,864-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
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MH64S72QJA-6 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:4,831,838,208-BIT ( 64,108,864-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
MH64S72QJA-7 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:4,831,838,208-BIT ( 67,108,864-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
MH64S72QJA-8 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:4,831,838,208-BIT ( 67,108,864-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
MH64S72VJG-5 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:4,831,838,208-BIT ( 67,108,864-WORD BY 72-BIT ) Synchronous DYNAMIC RAM