MAX6954 Maxim, MAX6954 Datasheet - Page 21
MAX6954
Manufacturer Part Number
MAX6954
Description
4-Wire Interfaced / 2.7V to 5.5V LED Display Driver with I/O Expander and Key Scan
Manufacturer
Maxim
Datasheet
1.MAX6954.pdf
(38 pages)
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Table 9. Digit Plane Data Register Format
Table 10. Segment Decoding for 7-Segment Displays
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
4-Wire Interfaced, 2.7V to 5.5V LED Display
______________________________________________________________________________________
ADDRESS CODE
0x20 to 0x2F
0x40 to 0x4F
0x60 to 0x6F
MODE
Driver with I/O Expander and Key Scan
(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
a
ADDRESS
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
21