MAX6955 Maxim, MAX6955 Datasheet - Page 22

• Manufacturer Part Number: MAX6955
• Description: 2-Wire Interfaced / 2.7V to 5.5V LED Display Driver with I/O Expander and Key Scan
• Manufacturer: Maxim

2-Wire Interfaced, 2.7V to 5.5V LED Display
Driver with I/O Expander and Key Scan
Table 10. Digit Plane Data Register Format
Table 11. Segment Decoding for 7-Segment Displays
22
14-segment or 16-segment mode, writing digit data
to use font map data with decimal place unlit
14-segment or 16-segment mode, writing digit data
to use font map data with decimal place lit
7-segment decode mode, DP unlit
7-segment decode mode, DP lit
7-segment no-decode mode
Segment Line
______________________________________________________________________________________
MODE
ADDRESS CODE
0x20 to 0x2F
0x40 to 0x4F
0x60 to 0x6F
MODE
(HEX)
D7
dp
0x20 to 0x2F
0x40 to 0x4F
0x60 to 0x6F
0x20 to 0x2F
0x40 to 0x4F
0x60 to 0x6F
0x20 to 0x2F
0x40 to 0x4F
0x60 to 0x6F
0x20 to 0x2F
0x40 to 0x4F
0x60 to 0x6F
0x20 to 0x2F
0x40 to 0x4F
0x60 to 0x6F
D6
ADDRESS
a
CODE
(HEX)
D5
b
D7
0
1
0
1
REGISTER DATA
D4
c
D6
0
0
Bits D6 to D0 select font characters 0 to 127
Bits D6 to D0 select font characters 0 to 127
Direct control of 8 segments
D5
0
0
D3
d
REGISTER DATA
D4
0
0
D2
e
D3
D2
D3 to D0
D3 to D0
D1
f
D1
D0
g
D0