MH4S64BLG-7 Datasheet, PDF (10/55 Pages) Mitsubishi Electric Semiconductor – 268435456-BIT (4194304 - WORD BY 64-BIT)SynchronousDRAM

Preliminary Spec.
Some contents are subject to change without notice.
MITSUBISHI LSIs
MH4S64BLG -7,-8,-10
268435456-BIT (4194304 - WORD BY 64-BIT)SynchronousDRAM
FUNCTION TRUTH TABLE(continued)
Current State
RE-
FRESHING
MODE
REGISTER
SETTING
/S /RAS /CAS /WE Address
Command
Action
H
X
X
XX
DESEL NOP(Idle after tRC)
L
H H HX
NOP
NOP(Idle after tRC)
L
H H L BA
TBST
ILLEGAL
L
HL
X BA,CA,A10 READ/WRITE ILLEGAL
L
L
H H BA,RA
ACT
ILLEGAL
L
L
H L BA,A10
PRE/PREA ILLEGAL
L
L
L
HX
REFA
ILLEGAL
Op-Code,
L
L
L
L
Mode-Add
MRS
ILLEGAL
H
X
X
XX
DESEL NOP(Idle after tRSC)
L
H H HX
NOP
NOP(Idle after tRSC)
L
H H L BA
TBST
ILLEGAL
L
HL
X BA,CA,A10 READ/WRITE ILLEGAL
L
L
H H BA,RA
ACT
ILLEGAL
L
L
H L BA,A10
PRE/PREA ILLEGAL
L
L
L
HX
REFA
ILLEGAL
Op-Code,
L
L
L
L
Mode-Add
MRS
ILLEGAL
ABBREVIATIONS:
H = Hige Level, L = Low Level, X = Don't Care
BA = Bank Address, RA = Row Address, CA = Column Address, NOP = No Operation
NOTES:
1. All entries assume that CKE was High during the preceding clock cycle and the current
clock cycle.
2. ILLEGAL to bank in specified state; function may be legal in the bank indicated by BA,
depending on the state of that bank.
3. Must satisfy bus contention, bus turn around, write recovery requirements.
4. NOP to bank precharging or in idle state.May precharge bank indicated by BA.
5. ILLEGAL if any bank is not idle.
ILLEGAL = Device operation and / or date-integrity are not guaranteed.
MIT-DS-0227-0.5
MITSUBISHI
ELECTRIC
( 10 / 55 )
29.Oct.1998