MH8S72BAFD-7 Datasheet, PDF (13/56 Pages) Mitsubishi Electric Semiconductor – 603,979,776-BIT ( 8,388,608-WORD BY 72-BIT ) Synchronous DYNAMIC RAM

MH8S72BAFD -7, -8 ^{MITSUBISHI LSIs}
P ^{rSepl iemci.n a r y} _{603,979,776-BIT ( 8,388,608-WORD BY 72-BIT ) Synchronous DYNAMIC RAM}
FUNCTION TRUTH TABLE FOR CKE
CK CK
Current State _{n-1 n}
SELF -
HX
REFRESH*1 L H
LH
LH
LH
LH
LL
POWER
DOWN
HX
LH
LL
ALL BANKS
IDLE*2
HH
HL
HL
HL
HL
HL
HL
LX
ANY STATE H H
other than
HL
listed above L H
LL
/S /RAS /CAS /WE Add
Action
X
X
X
X
X INVALID
H
X
X
X
X Exit Self-Refresh(Idle after tRC)
L
H H H X Exit Self-Refresh(Idle after tRC)
L
HHL
X ILLEGAL
L
HL
X
X ILLEGAL
L
L
X
X
X ILLEGAL
X
X
X
X
X NOP(Maintain Self-Refresh)
X
X
X
X
X INVALID
X
X
X
X
X Exit Power Down to Idle
X
X
X
X
X NOP(Maintain Self-Refresh)
X
X
X
X
X Refer to Function Truth Table
L
L
L
H X Enter Self-Refresh
H
X
X
X
X Enter Power Down
L
H H H X Enter Power Down
L
HHL
X ILLEGAL
L
HL
X
X ILLEGAL
L
L
X
X
X ILLEGAL
X
X
X
X
X Refer to Current State = Power Down
X
X
X
X
X Refer to Function Truth Table
X
X
X
X
X Begin CK0 Suspend at Next Cycle*3
X
X
X
X
X Exit CK0 Suspend at Next Cycle*3
X
X
X
X
X Maintain CK0 Suspend
ABBREVIATIONS:
H = High Level, L = Low Level, X = Don't Care
NOTES:
1. CKE Low to High transition will re-enable CK and other inputs asynchronously.
A minimum setup time must be satisfied before any command other than EXIT.
2. Power-Down and Self-Refresh can be entered only form the All banks idle State.
3. Must be legal command.
MIT-DS-0273-0.2
MITSUBISHI
ELECTRIC
1/ Dec./1998 13