M5M467400BJ Datasheet, PDF (4/37 Pages) Mitsubishi Electric Semiconductor – FAST PAGE MODE 67108864-BIT (16777216-WORD BY 4-BIT) DYNAMIC RAM

(Rev. 1.1)
MITSUBISHI LSIs
M5M467400/465400BJ,BTP -5,-6,-5S,-6S
M5M467800/465800BJ,BTP -5,-6,-5S,-6S
M5M465160BJ,BTP -5,-6,-5S,-6S
FAST PAGE MODE 67108864-BIT (16777216-WORD BY 4-BIT) DYNAMIC RAM
FAST PAGE MODE 67108864-BIT (8388608-WORD BY 8-BIT) DYNAMIC RAM
FAST PAGE MODE 67108864-BIT (4194304-WORD BY 16-BIT) DYNAMIC RAM
FUNCTION
The M5M467400(800)/465400(800,160)BJ, BTP provide, in addition to normal read, write, and read-modify-write operations,
a number of other functions, e.g., Fast page mode, CAS before RAS refresh, and delayed-write.
The input conditions for each are shown in Table 1.
Table 1 Input conditions for each mode
M5M467400Bxx / M5M465400Bxx / M5M467800Bxx / M5M465800Bxx
Operation
Read
Write (Early write)
Write (Delayed write)
Read-modify-write
RAS-only refresh
Hidden refresh
CAS before RAS refresh
Standby
RAS
ACT
ACT
ACT
ACT
ACT
ACT
ACT
NAC
CAS
ACT
ACT
ACT
ACT
NAC
ACT
ACT
DNC
Inputs
W
NAC
ACT
ACT
ACT
DNC
DNC
NAC
DNC
OE
ACT
DNC
DNC
ACT
DNC
ACT
DNC
DNC
Row
address
APD
APD
APD
APD
APD
DNC
DNC
DNC
Column
address
APD
APD
APD
APD
DNC
DNC
DNC
DNC
Input/Output
Input
OPN
VLD
VLD
VLD
OPN
OPN
DNC
DNC
Output
VLD
OPN
IVD
VLD
OPN
VLD
OPN
OPN
Refresh Remark
NO
NO
NO
NO
YES
YES
YES
NO
FAST PAGE
mode
identical
M5M465160Bxx
Operation
Lower byte read
Upper byte read
Word read
Lower byte write
Upper byte write
Word write
RAS-only refresh
Hidden refresh
CAS before RAS refresh
Stand-by
RAS
ACT
ACT
ACT
ACT
ACT
ACT
ACT
ACT
ACT
NAC
LCAS
ACT
NAC
ACT
ACT
NAC
ACT
NAC
ACT
ACT
DNC
Inputs
UCAS
NAC
ACT
ACT
NAC
ACT
ACT
NAC
ACT
ACT
DNC
W
NAC
NAC
NAC
ACT
ACT
ACT
DNC
NAC
DNC
DNC
OE
ACT
ACT
ACT
NAC
NAC
NAC
DNC
ACT
DNC
DNC
Row
address
APD
APD
APD
APD
APD
APD
APD
DNC
DNC
DNC
Note : ACT : active, NAC : nonactive, DNC : don' t care, VLD : valid, IVD : Invalid, APD : applied, OPN : open
Column
address
APD
APD
APD
APD
APD
APD
DNC
DNC
DNC
DNC
Input/Output
DQ1~DQ8 DQ9~DQ16
VLD
OPN
OPN
VLD
VLD
VLD
DIN
DNC
DNC
DIN
DIN
OPN
DIN
OPN
VLD
VLD
OPN
OPN
OPN
OPN
Refresh Remark
NO
NO
NO
NO
NO
NO
YES
YES
YES
NO
FAST PAGE
mode
identical
4
MITSUBISHI
Jun. 1999
ELECTRIC