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MH32S72AQJA-7 Datasheet(PDF) 5 Page - Mitsubishi Electric Semiconductor

Part No. MH32S72AQJA-7
Description  2,415,919,104-BIT ( 33,554,432-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
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Manufacturer  MITSUBISHI [Mitsubishi Electric Semiconductor]
Direct Link  http://www.mitsubishichips.com
Logo MITSUBISHI - Mitsubishi Electric Semiconductor

MH32S72AQJA-7 Datasheet(HTML) 5 Page - Mitsubishi Electric Semiconductor

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2,415,919,104-BIT ( 33,554,432-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
MH32S72AQJA-7, -8
17/Mar./2000
MIT-DS-0371-0.2
Preliminary Spec.
Some contents are subject to change without notice.
MITSUBISHI LSIs
MITSUBISHI
ELECTRIC
BASIC FUNCTIONS
/S
Chip Select : L=select, H=deselect
/RAS
Command
/CAS
Command
/WE
Command
CKE
Ref resh Option @ref resh command
A10
Precharge Option @precharge or read/write command
CK
def ine basic commands
The MH32S72AQJA 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.
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.Firs t output
data appears after /CAS latency. When A10 =H at this command,the bank is
deactivated after the burs t 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
term inates 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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