參數(shù)資料
型號(hào)： MH8S64DBKG-7L
廠商： Mitsubishi Electric Corporation
英文描述： 536870912-BIT (8388608 - WORD BY 64-BIT)SynchronousDRAM
中文描述： 536870912位（8388608 -文字，64位）SynchronousDRAM
文件頁數(shù)： 7/55頁
文件大?。?/td> 588K
代理商： MH8S64DBKG-7L
MH8S64PHC -7,-8,-10
536870912-BIT (8388608 - WORD BY 64-BIT)SynchronousDRAM
MITSUBISHI LSIs
( / 55 )
7
MITSUBISHI
ELECTRIC
9/ Dec. /1998
Preliminary Spec.
Some contents are subject to change without notice.
MIT-DS-0282-0.0
BASIC FUNCTIONS
The MH8S64PHC 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 BA0,1.
READ command starts burst read from the active bank indicated by BA0,1.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 BA0,1. 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 BA0,1. 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.
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