A43L2616 Datasheet, PDF (38/41 Pages) AMIC Technology – 1M X 16 Bit X 4 Banks Synchronous DRAM

A43L2616
Function Truth Table (Table 1, Continued)
Current
State
CS RAS CAS _WE BS
HX XXX
Address
Action
X
NOP(Continue Burst to End→Precharge)
Note
L H HHX
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
2
Precharge _L
H
L
L BA CA,A10/AP ILLEGAL
2
L
L
H X BA
RA, PA ILLEGAL
L
L
L
XX
X
ILLEGAL
2
HX XXX
X
NOP→Idle after tRP
L H HHX
X
NOP→Idle after tRP
LHHLX
X
ILLEGAL
Precharge _L
H
L
X BA CA,A10/AP ILLEGAL
2
L
L
H H BA
RA
ILLEGAL
2
L
L
H
L BA
A10/PA NOP→Idle after tRP
2
L
L
L
XX
X
ILLEGAL
4
HX XXX
X
NOP→Row Active after tRCD
L H HHX
X
NOP→Row Active after tRCD
Row
LHHLX
X
ILLEGAL
Activating L
H
L
X BA CA,A10/AP ILLEGAL
2
L
L
H H BA
RA
ILLEGAL
2
L
L
H
L BA
A10/PA ILLEGAL
2
L
L
L
XX
X
ILLEGAL
2
HX XXX
X
NOP→Idle after tRC
LHHXX
Refreshing _L
H
L
X
X
X
NOP→Idle after tRC
X
ILLEGAL
L
L
HX
X
X
ILLEGAL
L
L
L
XX
X
ILLEGAL
HX XXX
Mode
Register
L
H
H
H
H
Accessing _L
H
H
L
X
X
NOP→Idle after 2 clocks
X
NOP→Idle after 2 clocks
X
ILLEGAL
L
H
L
X
X
X
ILLEGAL
L
L
X
X
X
X
ILLEGAL
Abbreviations
RA = Row Address
BA = Bank Address
AP = Auto Precharge
NOP = No Operation Command
CA = Column Address
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.
(September, 2004, Version 3.1)
37
AMIC Technology, Corp.