7

ICM7228

Typical Performance Curves

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.

0

100

200

300

400

500

0

1.0

2.0

3.0

4.0

5.0

80

60

40

20

0

0

1.0

2.0

3.0

4.0

5.0

300

200

100

0

01.0

2.03.0

4.0

5.0

0

10

20

30

40

50

0

1.0

2.0

3.0

4.0

5.0