Datasheet

Table 26. Global Intensity Register Format
Table 25. Scan-Limit Register Format
Table 24. Blink Phase Readback (P Data Bit D7) Format
Table 23. Global Intensity (I Data Bit D6) Format
DUTY
CYCLE
TYPICAL
SEGMENT
CURRENT (mA)
ADDRESS
CODE (HEX)
REGISTER DATA
HEX
CODE
D7 D6 D5 D4 D3 D2 D1 D0
1/16 (min on) 2.5 0x02 X X X X 0 0 0 0 0xX0
2/16 5 0x02 X X X X 0 0 0 1 0xX1
3/16 7.5 0x02 X X X X 0 0 1 0 0xX2
4/16 10 0x02 X X X X 0 0 1 1 0xX3
5/16 12.5 0x02 X X X X 0 1 0 0 0xX4
6/16 15 0x02 X X X X 0 1 0 1 0xX5
7/16 17.5 0x02 X X X X 0 1 1 0 0xX6
8/16 20 0x02 X X X X 0 1 1 1 0xX7
9/16 22.5 0x02 X X X X 1 0 0 0 0xX8
10/16 25 0x02 X X X X 1 0 0 1 0xX9
11/16 27.5 0x02 X X X X 1 0 1 0 0xXA
12/16 30 0x02 X X X X 1 0 1 1 0xXB
13/16 32.5 0x02 X X X X 1 1 0 0 0xXC
14/16 35 0x02 X X X X 1 1 0 1 0xXD
15/16 37.5 0x02 X X X X 1 1 1 0 0xXE
15/16 (max on) 37.5 0x02 X X X X 1 1 1 1 0xXF
SCAN
LIMIT
ADDRESS CODE
(HEX)
REGISTER DATA
HEX
CODE
D7 D6 D5 D4 D3 D2 D1 D0
Display Digit 0 only 0x03 X X X X X 0 0 0 0x00
Display Digits 0 and 1 0x03 X X X X X 0 0 1 0x01
Display Digits 0 1 2 0x03 X X X X X 0 1 0 0x02
Display Digits 0 1 2 3 0x03 X X X X X 0 1 1 0x03
Display Digits 0 1 2 3 4 0x03 X X X X X 1 0 0 0x04
Display Digits 0 1 2 3 4 5 0x03 X X X X X 1 0 1 0x05
Display Digits 0 1 2 3 4 5 6 0x03 X X X X X 1 1 0 0x06
Display Digits 0 1 2 3 4 5 6 7 0x03 X X X X X 1 1 1 0x07
MODE
REGISTER DATA
D7 D6 D5 D4 D3 D2 D1 D0
P1 Blink Phase 0 I R T E B X S
P0 Blink Phase 1 I R T E B X S
MODE
REGISTER DATA
D7 D6 D5 D4 D3 D2 D1 D0
Intensity for all digits is controlled by one setting in the global intensity register. P 0 R T E B X S
Intensity for digits is controlled by the individual settings in the intensity10 and
intensity76 registers.
P 1 R T E B X S
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Maxim Integrated │ 26
MAX6954 4-Wire Interfaced, 2.7V to 5.5V LED Display
Driver with I/O Expander and Key Scan