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參數(shù)資料
| 型號(hào)： | MSM54V24632A |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | 131,072-Word x 32-Bit x 2-Bank SGRAM without Graphics Functions |
| 中文描述： | 131,072字× 32位× 2，銀行SGRAM無圖形功能 |
| 文件頁數(shù)： | 28/29頁 |
| 文件大?。?/td> | 401K |
| 代理商： | MSM54V24632A |
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29
MSM54V24632A
Semiconductor
FUNCTION TRUTH TABLE (Table 1) (2/2)
Notes:
1.
2.
All inputs will be enabled when CKE is set high for at least 1 cycle prior to the inputs.
Illegal to bank in specified state, but may be legal in some cases depending on the state of bank
selection.
Satisfy the timing of t
CCD
and t
WR
to prevent bus contention.
NOP to bank precharging or in idle state. Precharges activated bank by BA or A8.
Illegal if any bank is not idle.
3.
4.
5.
Current State
1
Precharge
CS RAS CAS WE
BA
H
X
X
L
H
H
L
H
H
L
H
L
L
L
H
L
L
H
L
L
L
H
X
X
L
H
H
L
H
H
L
H
L
L
L
H
L
L
H
L
L
L
H
X
X
L
H
H
L
H
H
L
H
L
L
L
H
L
L
H
L
L
L
H
X
X
L
H
H
L
H
L
L
L
H
L
L
L
H
X
X
L
H
H
L
H
H
L
H
L
L
L
X
ADDR
X
X
X
CA
RA
A8
X
X
X
X
CA
RA
A8
X
X
X
X
CA
RA
A8
X
X
X
X
X
X
X
X
X
X
X
X
H
L
X
H
L
X
X
H
L
X
H
L
X
X
H
L
X
H
L
X
X
X
X
X
X
X
H
L
X
X
X
X
BA
BA
BA
BA
X
X
X
BA
BA
BA
BA
X
X
X
BA
BA
BA
BA
X
X
X
X
X
X
X
X
X
X
X
Write Recovery
Row Active
Refresh
Mode Register
Access
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
BA = Bank Address
AP = Auto Precharge
NOP = No OPeration command
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