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MH4V644AXJJ Datasheet(PDF) 8 Page - Mitsubishi Electric Semiconductor

Part # MH4V644AXJJ
Description  FAST PAGE MODE 268435456-BIT (4194304-WORD BY 64-BIT)DYNAMIC RAM
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Manufacturer  MITSUBISHI [Mitsubishi Electric Semiconductor]
Direct Link  http://www.mitsubishichips.com
Logo MITSUBISHI - Mitsubishi Electric Semiconductor

MH4V644AXJJ Datasheet(HTML) 8 Page - Mitsubishi Electric Semiconductor

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MH4V64/644AXJJ-5,-6,-5S,-6S
FAST PAGE MODE 268435456-BIT (4194304-WORD BY 64-BIT)DYNAMIC RAM
MITSUBISHI
ELECTRIC
MITSUBISHI LSIs
(
/ 25 )
Preliminary
Preliminary
Some of contents are subject
to change without notice.
MIT-DS-0072-0.5
26/Feb./1997
8
FUNCTION
The MH4V64/644AXJJ provide, in addition to
normal read, write, and read-modify-write
operations,
Table 1 Input conditions for each mode
Operation
/RAS
/CAS
a number of other functions, e.g., Fast page mode,
/RAS-only refresh, and delayed-write. The input
conditions for each are shown in Table 1.
Inputs
Input/Output
Refresh
Remark
/W
Row
address address
Column
Output
Read
Write (Early write)
Write (Delayed write)
Read-modify-write
/RAS-only refresh
/CAS before /RAS refresh
Standby
Hidden refresh
ACT
ACT
ACT
ACT
ACT
ACT
ACT
NAC
ACT
ACT
ACT
ACT
NAC
ACT
ACT
DNC
NAC
ACT
ACT
ACT
DNC
NAC
NAC
DNC
APD
APD
APD
APD
DNC
DNC
DNC
DNC
OPN
VLD
IVD
VLD
OPN
VLD
OPN
OPN
YES
YES
YES
YES
YES
YES
YES
NO
Fast page
mode
identical
Note : ACT : active, NAC : nonactive, DNC : don' t care, VLD : valid, IVD : Invalid, APD : applied, OPN : open
/OE
ACT
DNC
DNC
ACT
DNC
ACT
DNC
DNC
APD
APD
APD
APD
APD
DNC
DNC
APD
Input
VLD
VLD
VLD
DNC
DNC
DNC
OPN
OPN
ACT
ACT
NAC
DNC
OPN
YES
DNC
DNC
DNC
Self refresh *
*MH4V64/644AXJJ-5S,-6S only


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