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MD56V62160/H
FUNCTION TRUTH TABLE (Table 1) (2/2)
Current State1 CS RAS CAS WE BA ADDR
Action
Precharge
Write Recovery
Row Active
Refresh
H
L
L
L
L
L
L
H
L
L
L
L
L
L
H
L
L
L
L
L
L
H
L
L
L
L
H
L
L
L
L
X
H
H
H
L
X
H
H
L
X
H
L
X
X
X
X
NOP --> Idle after tRP
NOP --> Idle after tRP
ILLEGAL 2
ILLEGAL 2
ILLEGAL 2
NOP 4
BA
BA
BA
BA
X
X
X
H
L
CA
RA
A10
X
H
H
L
L
L
X
X
H
L
ILLEGAL
X
H
H
H
L
X
H
H
L
X
X
NOP
X
X
NOP
BA
BA
BA
BA
X
X
ILLEGAL 2
ILLEGAL 2
ILLEGAL 2
ILLEGAL 2
ILLEGAL
X
H
L
CA
RA
A10
X
H
H
L
L
L
X
X
H
L
X
H
H
H
L
X
H
H
L
X
X
NOP --> Row Active after tRCD
NOP --> Row Active after tRCD
ILLEGAL 2
ILLEGAL 2
ILLEGAL 2
X
X
BA
BA
BA
BA
X
X
X
H
L
CA
RA
A10
X
H
H
L
L
ILLEGAL 2
L
X
X
X
X
X
X
X
H
L
ILLEGAL
X
H
H
L
X
H
L
X
X
NOP --> Idle after tRC
NOP --> Idle after tRC
ILLEGAL
X
X
X
X
H
L
X
X
ILLEGAL
L
X
X
ILLEGAL
Mode Register
Access
X
H
H
H
L
X
H
H
L
X
X
NOP
X
X
NOP
X
X
ILLEGAL
X
X
X
X
ILLEGAL
X
X
X
ILLEGAL
ABBREVIATIONS
RA = Row Address
CA = Column Address
BA = Bank Address
AP = Auto Precharge
NOP = No OPeration command
Notes:
1. All inputs are enabled when CKE is set high for at least 1 cycle prior to the inputs.
2. Illegaltobankinspecifiedstate,butmaybelegalinsomecasesdependingonthestateofbank
selection.
3. Satisfy the timing of tCCD and tWR to prevent bus contention.
4. NOP to bank precharging or in idle state. Precharges activated bank by BA or A10.
5. Illegal if any bank is not idle.
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