A43L0616A
Function Truth Table (Table 1, Continued)
Current
State
CS RAS CAS WE BA
HX XXX
Address
Action
X
NOP(Continue Burst to End→Precharge)
LHHHX
X
NOP(Continue Burst to End→Precharge)
Write with L
H
H
L
X
X
ILLEGAL
Auto
L H L H BA CA,A10/AP ILLEGAL
Precharge L
H
L
L BA CA,A10/AP ILLEGAL
L
L
H
X BA
RA, PA ILLEGAL
L
L
L
XX
X
ILLEGAL
HX XXX
X
NOP→Idle after tRP
LHHHX
X
NOP→Idle after tRP
LHHLX
X
ILLEGAL
Precharge L
H
L
X BA CA,A10/AP ILLEGAL
L
L
H
H BA
RA
ILLEGAL
L
L
H
L BA
PA
NOP→Idle after tRP
L
L
L
XX
X
ILLEGAL
HX XXX
X
NOP→Row Active after tRCD
LHHHX
X
NOP→Row Active after tRCD
Row
LHHLX
X
ILLEGAL
Activating L H L X BA CA,A10/AP ILLEGAL
L
L
H
H BA
RA
ILLEGAL
L
L
H
L BA
PA
ILLEGAL
L
L
L
XX
X
ILLEGAL
HX XXX
X
NOP→Idle after tRC
LHHXX
Refreshing L
H
L
X
X
X
NOP→Idle after tRC
X
ILLEGAL
L
L
H
X
X
X
ILLEGAL
L
L
L
XX
X
ILLEGAL
Note
2
2
2
2
2
2
4
2
2
2
2
Abbreviations
RA = Row Address
NOP = No Operation Command
BA = Bank Address
CA = Column Address
AP = Auto Precharge
PA = Precharge All
Note: 1. All entries assume that CKE was active (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, and/or write recovery requirements.
4. NOP to bank precharging or in idle state. May precharge bank indicated by BA (and PA).
5. Illegal if any banks is not idle.
(May, 2001, Version 1.0)
41
AMIC Technology, Inc.