ICM7217_01 Datasheet, PDF (18/20 Pages) Intersil Corporation – 4-Digit LED Display, Programmable Up/Down Counter

ICM7217
COMMON-ANODE
LED DISPLAY
COUNT INPUT
CARRY OUT
BCD OUTPUTS
HIGH ORDER DIGITS
1
4 ^4-7
25 - 28
24
20
ICM7217
4 DIGITS ^CARRY/BORROW
D1
BCD OUTPUTS
HIGH ORDER DIGITS
V+
7 SEGMENTS
4
V+ ^UP/DOWN
N.O.
RESET
8
9
15 - 19
10
21, 22
14
HIGH ORDER
1A
1B _1/4
CD4011
V+
50kΩ
3kΩ
D
1_/2
CD4013
Q
CL
4 DIGITS 7 SEGMENTS
1
4-7
25 - 28
24
V+
20
ICM7217
23
8
9
15 - 19
10
21, 22
14
LOW ORDER
50kΩ
NPN
TRANSISTOR
FIGURE 22. 8-DIGIT UP/DOWN COUNTER
18