參數(shù)資料
型號(hào): M54HC670
廠(chǎng)商: 意法半導(dǎo)體
英文描述: 4 word×4 bit register file(3 state)(4字×4位注冊(cè)文件(3態(tài)))
中文描述: 4字× 4位寄存器文件(3國(guó))(4字× 4位注冊(cè)文件(3態(tài)))
文件頁(yè)數(shù): 2/12頁(yè)
文件大?。?/td> 264K
代理商: M54HC670
LOGIC DIAGRAM
WRITE FUNCTION TABLE
WRITE INPUTS
WB
WA
L
L
H
H
X
Notes:
1 *: DON’T CARE Z: HIGHIMPEDANCE
2 (Q = D)= THEFOUR SELECTINTERNALFLIP FLOP OUTPUTS WILL ASSUMETHE STATESAPPLIED TOTHE FOUR
EXTERNALDATA INPUTS.
3 Q0 = THE LEVELOFQ BEFORETHE INDICATED INPUT CONDITIONS WEREESTABLISHED.
4 W0B1= THEFIRST BITOF WORD0, ETC.
WORDS
1
Q0
Q = D
Q0
Q0
Q0
WE
L
L
L
L
H
0
2
3
L
H
L
H
X
Q = D
Q0
Q0
Q0
Q0
Q0
Q0
Q0
Q0
Q0
Q = D
Q0
Q0
Q = D
Q0
READ FUNCTION TABLE
READ INPUTS
RB
RA
L
L
H
H
X
OUTPUTS
Q1
RE
L
L
L
L
H
Q0
W0B1 W0B2
W1B1 W1B2
W2B1 W2B2
W3B1 W3B2
Z
Q2
Q3
L
H
L
H
X
W0B3 W0B4
W1B3 W1B4
W2B3 W2B4
W3B3 W3B4
Z
Z
Z
M54/M74HC670
2/12
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PDF描述
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M54HC693 Binary Up/Down Counter/Register(二進(jìn)制計(jì)數(shù)器/寄存器)
M54HC696 Decade Up/Down Counter/Register(十進(jìn)制加/減計(jì)數(shù)器/寄存器(三態(tài)))
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