參數(shù)資料
型號(hào): LFECP40E-3F256I
廠商: Lattice Semiconductor Corporation
英文描述: LatticeECP/EC Family Data Sheet
中文描述: LatticeECP / EC的系列數(shù)據(jù)手冊(cè)
文件頁數(shù): 55/117頁
文件大?。?/td> 557K
代理商: LFECP40E-3F256I
3-19
DC and Switching Characteristics
LatticeECP/EC Family Data Sheet
Lattice Semiconductor
Figure 3-11. Read Before Write (SP Read/Write on Port A, Input Registers Only)
Note: Input data and address are registered at the positive edge of the clock and output data appears after the positive edge of the clock.
Figure 3-12. Write Through (SP Read/Write On Port A, Input Registers Only)
Note: Input data and address are registered at the positive edge of the clock and output data appears after the positive edge of the clock.
A0
A1
A0
A1
D0
D1
D2
DOA
A0
D2
D3
D1
old A0 Data
old A1 Data
D0
D1
DIA
ADA
WEA
CSA
CLKA
t
SU
t
H
t
ACCESS
t
ACCESS
t
ACCESS
t
ACCESS
t
ACCESS
A0
A1
A0
D0
D1
D4
t
SU
t
ACCESS
t
ACCESS
t
ACCESS
t
H
D2
D3
D4
D0
D1
D2
Data from Prev Read
or Write
Three consecutive writes to A0
D3
DOA
DIA
ADA
WEA
CSA
CLKA
t
ACCESS
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