參數(shù)資料
型號： MH1S72CPG-12
廠商： Mitsubishi Electric Corporation
英文描述： 75497472-BIT (1048576-WORD BY 72-BIT)SynchronousDRAM
中文描述： 75497472位（1048576 - Word的72位）SynchronousDRAM
文件頁數(shù)： 7/47頁
文件大小： 681K
代理商： MH1S72CPG-12
MH1S72CPG-10,-12,-15
75497472-BIT (1048576-WORD BY 72-BIT)SynchronousDRAM
MITSUBISHI LSIs
( / 47 )
MITSUBISHI
ELECTRIC
28.Mar.1997
Preliminary Spec.
Some contents are subject to change without notice.
MIT-DS-0089-3.0
BASIC FUNCTIONS
The MH1S72CPG 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
Precharge Option @precharge or read/write
command
A10
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
).
PEFA 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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