Rainbow-electronics MAX6959 Manual do Utilizador descarregar pdf (Página 11)

MAX6958/MAX6959

2-Wire Interfaced, 3V to 5.5V, 4-Digit,

9-Segment LED Display Drivers with Keyscan

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7-SEGMENT

CHARACTER

D7–D4 D3 D2 D1 D0 a b c d e f g

0 X00001111110

1 X00010110000

2 X00101101101

3 X00111111001

4 X01000110011

5 X01011011011

6 X01101011111

7 X01111110000

8 X10001111111

9 X10011111011

A X10101110111

B X10110011111

C X11001001110

D X11010111101

E X11101001111

F X11111000111

Table 8. Seven-Segment Mapping Decoder for Hexadecimal Font

ADDRESS

CODE (HEX)

D7 D6 D5 D4 D3 D2 D1 D0

Decode mode No decode for digits 3–0 0x01 X X X X 0000

Intensity 4/64 intensity 0x02 X X 0 00100

Scan limit Display 4 digits: 0 1 2 3 0x03 X X X X X X 1 1

Configuration Shutdown enabled 0x04 X X 0 X X X D bit 0

GPIO*

IRQ/SEG9 is a segment output

(not IRQ or logic output);

INPUT2 and INPUT1 are logic

inputs; IRQ flag is clear

0x06 1 0 0 0 0 X X 0

Display test Normal operation 0x07 X X X XXXX0

Key debounced* No key detected as debounced 0x08 0 0 0 00000

Key pressed* No key detected as pressed 0x0C 0 0 0 00000

Digit 0 Blank digit (because not decoded) 0x20 X 0 0 00000

Digit 1 Blank digit (because not decoded) 0x21 X 0 0 00000

Digit 2 Blank digit (because not decoded) 0x22 X 0 0 00000

Digit 3 Blank digit (because not decoded) 0x23 X 0 0 00000

Segments Blank segments 0x24 0 0 0 00000

Table 9. Initial Power-Up Register Status

*MAX6959 only.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 17 18 19

MAX6958/MAX6959 1

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