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MH32D64AKQJ-75 Datasheet(PDF) 5 Page - Mitsubishi Electric Semiconductor

Part No. MH32D64AKQJ-75
Description  2,147,483,684-BIT (33,554,432-WORD BY 64-BIT) Double Data Rate Synchronous DRAM Module
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Maker  MITSUBISHI [Mitsubishi Electric Semiconductor]
Homepage  http://www.mitsubishichips.com
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MH32D64AKQJ-75 Datasheet(HTML) 5 Page - Mitsubishi Electric Semiconductor

 
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MH32D64AKQJ-75,-10
2,147,483,684-BIT (33,554,432-WORD BY 64-BIT) Double Data Rate Synchronous DRAM Module
MIT-DS-0422-0.0
17.May.2001
Preliminary Spec.
Some contents are subject to change without notice.
MITSUBISHI LSIs
MITSUBISHI
ELECTRIC
5
BASIC FUNCTIONS
The MH32D64AKQJ 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 CLK rising edge. In addition to 3 signals, /CS ,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.
/S0
Chip Select : L=select, H=deselect
/RAS
Command
/CAS
Command
/WE
Command
CKE0
Ref resh Option @ref resh command
A10
Precharge Option @precharge or read/write command
CK0
def ine basic commands
Activate (ACT) [/RAS =L, /CAS =/WE =H]
ACT command activates a row in an idle bank indicated by BA.
Read (READ) [/RAS =H, /CAS =L, /WE =H]
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
burst read (auto-precharge,READA)
Write (WRITE) [/RAS =H, /CAS =/WE =L]
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).
Precharge (PRE) [/RAS =L, /CAS =H, /WE =L]
PRE command deactivates the active bank indicated by BA. This command also terminates
burst read /write operation. When A10 =H at this command, all banks are deactivated
(precharge all, PREA).
Auto-Refresh (REFA) [/RAS =/CAS =L, /WE =CKE0 =H]
REFA command starts auto-refresh cycle. Refresh address including bank address are
generated internally. After this command, the banks are precharged automatically.
/CK0


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