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ICM7217AIPI

Part #	ICM7217AIPI
Description	4 DIGIT LED PRESETTABLE UP/DOWN COUNTER - Bulk
Category	IC
Availability	In Stock
Qty	2

Qty	Price
1 +	$11.76769

Manufacturer	Available	Qty
Harris Corporation Date Code: 9312	Freelance Stock: 2 Ships Immediately

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Technical Document

DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

9-27

FIGURE 21. PRECISION TIMER

1

2

3

4

5

6

7

14

13

12

11

10

9

8

RUN MIN/SEC

STOP

RUN HRS/MIN

V

DD

(4V MAX)

SW1

g

4

b

e

f

d

a

V

DD

7

BLANK

SW6

INHIBIT

COMMON ANODE

LED DISPLAY

D4

D3

D2

D1

CARRY

ZERO

BCD

COUNT IN

STORE

RESET

c

EQUAL

UP/DOWN

LOAD REG

LOAD CTR

SCAN

LZB

V

DD

DIGITS

V

DD

DIS. CONT.

I/O

V

SS

SEGMENTS

5959

4

4

V

DD

V

DD

V

DD

RESET

PRESET

DISPLAY OFF

LOAD SET PT.

10K

SW3

SW2

COUNTDOWN

ELAPSED

SW4

SW5

EQUAL

ZERO

TO LOGIC GENERATING

SIGNALS FOR CONTROL OF

EXTERNAL EQUIPMENT

100K

V

DD

THUMBWHEEL SWITCHES

ICM7217

ICM7213

30pF

30pF 4.1943MHz

CRYSTAL

R

S

< 75Ω

ICM7217

9-28

FIGURE 22. 8-DIGIT UP/DOWN COUNTER

1

4 - 7

8

9

10

14

25 - 28

24

20

23

15 - 19

21, 22

ICM7217

LOW ORDER

V+

1

4 - 7

8

9

10

14

25 - 28

24

20

15 - 19

21, 22

ICM7217

HIGH ORDER

V+

50kΩ 3kΩ

V+ D

Q

CL

CD4013

1

/

2

V+

CARRY OUT

BCD OUTPUTS

COUNT INPUT

UP/DOWN

4 DIGITS

RESET

4

D1

N.O.

HIGH ORDER DIGITS

50kΩ

NPN

TRANSISTOR

BCD OUTPUTS

HIGH ORDER DIGITS

4

CARRY/BORROW

7 SEGMENTS

1B

1A

CD4011

1

/

4

4 DIGITS

7 SEGMENTS

COMMON-ANODE

LED DISPLAY

ICM7217

9-29

FIGURE 23. PRECISION FREQUENCY COUNTER (MHz MAXIMUM)

FIGURE 24. AUTO-TARE SYSTEM FOR A/D CONVERTER

4

8

9

14

25 - 28

24

20

15 - 19

21, 22

ICM7217

4 DIGITS

7 SEGMENTS

COMMON ANODE

LED DISPLAY

5

6

7

BCD

COUNT

STORE

RESET

OUT

ICM7207A

4

5

6

2

13

14

10

CD4011

1

/

4

INPUT

10kΩ22pF22pF

CRYSTAL

f = 5.24288MHz

R

S

= 75Ω

V+ = 5V

10kΩ

13

1

2

3

4

5

6

7

8

9

10

11

12

14

15

16

17

18

19

20

28

40

39

38

37

36

35

34

33

32

31

30

29

27

26

25

24

23

22

21

ICM7109

V

DD

REF IN -

REF CAP -

REF CAP +

REF IN +

IN HI

IN LO

COMMON

INT

AZ

BUF

REF OUT

V

SS

SEND

RUN/

HOLD

BUF OSC OUT

OSC SEL

OSC OUT

OSC IN

MODE

GND

STATUS

POL

OR

B12

B11

B10

B9

B8

B7

B6

B5

B4

B3

B2

B1

TEST

LBEN

HBEN

CE/LOAD

CARRY/

ZERO

EQUAL

BCD 8

BCD 4

BCD 2

BCD 1

COUNT

STORE

UP/

DOWN

LOAD REG.

LOAD CTR.

SCAN

RESET

D0

D2

D3

V

DD

DISP.

B

E

F

D

A

C

D1

G

V

SS

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

BORROW

CONT.

ICM7217

7

7

TARE

10µF

+5V

+5V

5 x 1N4148

MINUS SIGN

LED

270

+5V

4 DIGIT COMMON ANODE

LED DISPLAY

QDQD

QQ

RR

SS

47µF

100K

10K

100K

+5V

0.1µF

+

100K

100pF

+5V

47K

0.22µF

0.1µF

1µF

+5V

-

+5V

400mV

FULL SCALE

INPUT

ICM7217

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