LS7030 datasheet(4/4 Pages) LSI

4 / 4 page

1 2

BCD

COUNTER

1 2 4

BCD

COUNTER

2 4

BCD

COUNTER

1 2 4

BCD

COUNTER

BCD

COUNTER

BCD

COUNTER

2 4

BCD

COUNTER

1 2

BCD

COUNTER

4 BIT

LATCH

4 BIT

LATCH

4 BIT

LATCH

4 BIT

LATCH

4 BIT

LATCH

4 BIT

LATCH

4 BIT

LATCH

4 BIT

LATCH

1 2 4 8

MUX

GATE

SEGMENT

DECODER

DATA

OUTPUT

BUFFER

SEVEN

D6 OUTPUT

D7 OUTPUT

D8 OUTPUT

OVFLW

F/F

OVERFLOW INPUT

1 BIT

LATCH

BCD

DATA

OUTPUT

BLANK OUT

LAMP TEST INPUT

Vss

VGG

VDD

OVERFLOW OUTPUT

BLANKING

F/F

8 DIGIT STROBE OUTPUTS

OUTPUT

BUFFERS

8 STATE STATIC SCAN

COUNTER & DECODED

LSD

MSD

OSCILLATOR

BUFFER

SCAN RESET INPUT

(RESET TO MSD)

FIGURE 4. LS7030 BLOCK DIAGRAM

OSC. INPUT

SCAN INPUT

TEST COUNT INPUT

RESET

INPUT

LOAD

LATCH

INPUT

1 2 4 8

MUX

GATE

1 2 4 8

MUX

GATE

1 2 4 8

MUX

GATE

1 2 4 8

MUX

GATE

1 2 4 8

MUX

GATE

1 2 4 8

MUX

GATE

1 2 4 8

MUX

GATE

COUNT

INPUT

SEVEN

SEGMENT

DATA

OUT

LSD

MSD

DECIMAL POINT

INPUT

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LS7030 数据表(PDF) 4 Page - LSI Computer Systems

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