Datasheet

7
ICM7228
Typical Performance Curves
FIGURE 5. COMMON ANODE DIGIT DRIVER I
DIG
vs (V
DD
- V
DIG
)
FIGURE 6. COMMON ANODE SEGMENT DRIVER I
SEG
vs V
SEG
FIGURE 7. COMMON CATHODE DIGIT DRIVER I
DIG
vs V
DIG
FIGURE 8. COMMON CATHODE SEGMENT DRIVER I
SEG
vs
(V
DD
- V
SEG
)
TABLE 1. ICM7228A PIN ASSIGNMENTS AND DESCRIPTIONS
PIN NO. NAME FUNCTION DESCRIPTION
1 SEG c Output LED Display Segments c, e, b and Decimal Point Drive Lines.
2 SEG e
3 SEG b
4DP
5ID6,
(HEXA/CODE B
)
Input When “MODE” Low: Display Data Input, Bit 7.
When “MODE” High: Control Bit, Decoding Scheme Selection: High, Hexadecimal Decoding;
Low, Code B Decoding.
6ID5, (DECODE
) Input When “MODE” Low: Display Data Input, Bit 6.
When “MODE” High: Control Bit, Decode/No Decode Selection: High, No Decode; Low, Decode.
7ID7,
(DATA COMING)
Input When “MODE” Low: Display Data Input, Bit 8, Decimal Point Data.
When “MODE” High: Control Bit, Sequential Data Update Select: High, Data Coming; Low, No
Data Coming.
8WRITE
Input Data Input Will Be Written to Control Register or Display RAM on Rising Edge of WRITE.
V
DD
-V
DIG
(V)
I
DIG
(mA)
0
100
200
300
400
500
01.02.03.04.05.0
-55
o
C
25
o
C
125
o
C
-55
o
C
25
o
C
125
o
C
V
SEG
(V)
I
SEG
(mA)
80
60
40
20
0
0 1.0 2.0 3.0 4.0 5.0
-55
o
C
25
o
C
125
o
C
V
DIG
(V)
I
DIG
(mA)
300
200
100
0
01.02.03.04.05.0
-55
o
C
25
o
C
125
o
C
V
DD
-V
SEG
(V)
0
10
20
30
40
50
01.02.03.04.05.0
I
SEG
(mA)
-55
o
C
25
o
C
125
o
C