ICM7228 Datasheet, PDF (11/17 Pages) Intersil Corporation – 8-Digit, Microprocessor- Compatible, LED Display Decoder Driver

ICM7228
PIN NO.
NAME
20 DIGIT 4
21 DlGlT 7
22 DlGlT 6
23 DIGlT 3
24 SEG f
25 SEG d
26 SEG g
27 SEG a
28
V_SS
TABLE 3. ICM7228C PIN ASSIGNMENTS AND DESCRIPTIONS (Continued)
FUNCTION
DESCRIPTION
Output LED Display Digits 4, 7, 6 and 3 Drive Lines.
Output LED Display Segments f, d, g and a Drive Lines.
Supply Device Ground or Negative Power Supply Rail.
PIN NO.
NAME
1
DIGIT 4
2
DlGlT 6
3
DIGIT 3
4
DlGlT 1
5
DA0
6
DA1
7
ID7, (INPUT DP)
8
WRITE
9
HEXA/CODE
B/SHUTDOWN
10 DA2
11 ID1
12 ID0
13 ID2
14 ID3
15 DP
16 SEG a
17 SEG b
18 SEG d
19
V_DD
20 SEG c
21 SEG e
22 SEG f
23 SEG g
24 DIGIT 8
25 DIGIT 2
26 DIGIT 5
27 DIGIT 7
28
V_SS
TABLE 4. ICM7228D PIN ASSIGNMENTS AND DESCRIPTIONS
FUNCTION
DESCRIPTION
Output LED Display Digits 4, 6, 3 and 1 Drive Lines.
Input
Input
Input
Input
Input
Input
Input
Digit Address Input, Bit 1 LSB.
Digit Address Input, Bit 2.
Display Decimal Point Data Input, Negative True.
Data Input Will Be Written to Display RAM on Rising Edge of WRITE.
Three Level Input. Display Function Control: High, Hexadecimal Decoding; Float, Code B
Decoding; Low, Oscillator and Display Disabled.
Digit Address Input, Bit 3, MSB.
Display Data Inputs.
Output LED Display Decimal Point and Segments a, b, and d Drive Lines.
Supply
Output
Device Positive Power Supply Rail.
LED Display Segments c, e, f and g Drive Lines.
Output LED Display Digits 8, 2, 5 and 7 Drive Lines.
Supply Device Ground or Negative Power Supply Rail.
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