參數(shù)資料
型號: MSC23S2640E-8BS8
廠商: OKI SEMICONDUCTOR CO., LTD.
英文描述: 2,097,152 Word x 64 Bit SYNCHRONOUS DYNAMIC RAM MODULE (1BANK):
中文描述: 2097152字× 64位同步動態(tài)RAM模塊(1BANK):
文件頁數(shù): 10/11頁
文件大?。?/td> 71K
代理商: MSC23S2640E-8BS8
MSC23S2640E-8BS8 (98.08.19)
FUNCTION TRUTH TABLE (Table1) (2/2)
Current State
/CS
/RAS
/CAS
/WE
BA
Precharge
H
X
X
X
X
L
H
H
H
X
L
H
H
L
BA
L
H
L
X
BA
L
L
H
H
BA
L
L
H
L
BA
L
L
L
X
X
Write
H
X
X
X
X
Recovery
L
H
H
H
X
L
H
H
L
BA
L
H
L
X
BA
L
L
H
H
BA
L
L
H
L
BA
L
L
L
X
X
Row Active
H
X
X
X
X
L
H
H
H
X
L
H
H
L
BA
L
H
L
X
BA
L
L
H
H
BA
L
L
H
L
BA
L
L
L
X
X
Refresh
H
X
X
X
X
L
H
H
X
X
L
H
L
X
X
L
L
H
X
X
L
L
L
X
X
Mode Resister
H
X
X
X
X
Access
L
H
H
H
X
L
H
H
L
X
L
H
L
X
X
L
L
X
X
X
Page 10/11
ADDR
X
X
X
CA
RA
A10
X
X
X
X
CA
RA
A10
X
X
X
X
CA
RA
A10
X
X
X
X
X
X
X
X
X
X
X
Action
NOP
Idle after t
RP
NOP
Idle after t
RP
ILLEGAL
2
ILLEGAL
2
ILLEGAL
2
NOP
4
ILLEGAL
NOP
NOP
ILLEGAL
2
ILLEGAL
2
ILLEGAL
2
ILLEGAL
2
ILLEGAL
NOP Row Active after t
RCD
NOP Row Active after t
RCD
ILLEGAL
2
ILLEGAL
2
ILLEGAL
2
ILLEGAL
2
ILLEGAL
NOP
Idle after t
RC
NOP
Idle after t
RC
ILLEGAL
ILLEGAL
ILLEGAL
NOP
NOP
ILLEGAL
ILLEGAL
ILLEGAL
ABBREVIATIONS
RA = Row Address
CA = Column Address AP = Auto Precharge
BA = Bank Address
NOP = No Operation command
Notes:
1.
All inputs will be enabled when CKE is set high for at least 1 cycle prior to the inputs.
2.
Illegal to bank in specified state, but may be legal in some cases depending on the state of
bank selection.
3.
Satisfy the timing of t
CCD
and t
WR
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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MSC23S2640E 2,097,152 Word x 64 Bit SYNCHRONOUS DYNAMIC RAM MODULE (1BANK):
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