LS7031(2003) Ver la hoja de datos (PDF) - LSI Corporation
Número de pieza
componentes Descripción
Fabricante
LS7031 Datasheet PDF : 4 Pages
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SCAN RESET INPUT
(RESET TO MSD)
1
8 DIGIT STROBE OUTPUTS
9 87 65 4 32
LSD
MSD
OUTPUT
BUFFERS
DECIMAL POINT
INPUT
10
BLANKING
F/F
S
RQ
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
C COUNTER & DECODED
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
MUX
G GATE
12 48
G
MUX
GATE
12 48
MUX
G GATE
NZ
B1
B2
B4
B8
12 48
G
MUX
GATE
B1
B2
B4
B8
12 48
G MUX
GATE
27 Vss
26 VGG
23 VDD
11 BLANK OUT
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
RESET
INPUT 22
37 36 34 33
B1 B2 B4 B8
31 30 29 28
B1 B2 B4 B8
DIGIT ONE DIGIT TWO
4 BIT
LATCH
ST
4 BIT
LATCH
ST
4 BIT
LATCH
ST
4 BIT
LATCH
ST
4 BIT
LATCH
ST
4 BIT
LATCH
ST
OVERFLOW
12 OUTPUT
1 BIT
ST LATCH
1248
C BCD
COUNTER
R
124 8
C BCD
COUNTER
R
12 4 8
C BCD
COUNTER
R
12 48
C BCD
COUNTER
R
12 48
C BCD
COUNTER
R
12 48
C BCD
COUNTER
R
13 OVERFLOW
INPUT
C
OVFLW
R
F/F
FIGURE 4. LS7031 BLOCK DIAGRAM
16
D6 OUTPUT
15
D7 OUTPUT
14
D8 OUTPUT
7031-012703-4
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