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LS7030 Просмотр технического описания (PDF) - LSI Corporation
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Компоненты Описание
Список матч
LS7030
8 DECADE MULTIPLEXED COUNTER
LSI Corporation
LS7030 Datasheet PDF : 4 Pages
1
2
3
4
SCAN RESET INPUT
(RESET TO MSD)
1
8 DIGIT STROBE OUTPUTS
9 8 7 6 54 3 2
LSD
MSD
OUTPUT
BUFFERS
DECIMAL POINT
INPUT
10
BLANKING
F/F
S
RQ
27 Vss
26
V
GG
23 V
DD
38 LAMP TEST INPUT
11 BLANK OUT
OSC. INPUT
40
SCAN INPUT
39
1
2
B1
B2
B4
B8
OSCILLATOR
OR
BUFFER
3
B1
B2
B4
B8
R
8 STATE STATIC SCAN
COUNTER & DECODED
C
LSD
MSD
8
7
4
5
6
B1
B2
B4
B8
12 48
G
MUX
GATE
12 48
G
MUX
GATE
12 48
G
MUX
GATE
12 48
G
MUX
GATE
12 48
G
MUX
GATE
12 48
G
MUX
GATE
NZ
B1
B2
B4
B8
12 48
G
MUX
GATE
B1
B2
B4
B8
12 48
G
MUX
GATE
a
SEVEN
b
SEGMENT
c
DECODER
d
e
f
g
37
36
34
SEVEN
SEGMENT
33 DATA
31
OUT
30
29
B1
DATA
OUTPUT
B2
BUFFER
B4
B8
20
19
BCD
DATA
18
OUTPUT
17
LOAD
LATCH
INPUT
21
4 BIT
LATCH
ST
4 BIT
LATCH
ST
COUNT
INPUT
32
RESET
INPUT
22
124 8
C BCD
COUNTER
R
1248
C BCD
COUNTER
R
4 BIT
LATCH
ST
4 BIT
LATCH
ST
4 BIT
LATCH
ST
4 BIT
LATCH
ST
4 BIT
LATCH
ST
4 BIT
LATCH
ST
124 8
C BCD
COUNTER
R
12 48
C BCD
COUNTER
R
1248
C BCD
COUNTER
R
124 8
C BCD
COUNTER
R
1248
C BCD
COUNTER
R
1248
C BCD
COUNTER
R
12 OVERFLOW OUTPUT
1 BIT
ST LATCH
13 OVERFLOW INPUT
C
OVFLW
R
F/F
28
TEST COUNT INPUT
FIGURE 4. LS7030 BLOCK DIAGRAM
16
D6 OUTPUT
15
D7 OUTPUT
14
D8 OUTPUT
7030-012703-4
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