lCM7217BlJl Intersil Corporation, lCM7217BlJl Datasheet - Page 6

• Manufacturer Part Number: lCM7217BlJl
• Description: 4-digit Led Display, Programmable Up/down Counter
• Manufacturer: Intersil Corporation

Timing Waveforms
Typical Performance Curves
(OR LOAD REGISTER)
LOAD COUNTER
300
200
100
0
OPERATING
0
INTERNAL
4.5 ≤ V
ICM7217
ICM7217B
BCD I/O
MODE
FIGURE 4. TYPICAL IDIG vs V+
SCAN
= HIGH IMPEDANCE
= THREE-STATE W/ PULLDOWN
D4
D3
D2
D1
DD
85
≤ 6V
o
C
D
1
V
N
DD
OUTPUT
OUT
INPUT
- V
OUT
(V)
2
FIGURE 3. BCD I/O AND LOADING TIMING
-20
25
o
o
C
C
D4
IN
3
ICM7217
6
D3
IN
80
60
40
20
0
0
FIGURE 5. TYPICAL ISEG vs V
T
ICM7217
ICM7217B
A
D2
IN
= 25
o
C
1
V
D1
IN
OUT
V+ = 5.5V
V+ = 5V
COUNT INHIBITED IF
LOAD COUNTER
(V)
D4 OUT
2
V+ = 4.5V
OUT
D3 OUT
3