MAX6955 Maxim, MAX6955 Datasheet - Page 27

• 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

Table 24. Global Intensity (I Data Bit D6) Format
Table 25. Blink Phase Readback (P Data Bit D7) Format
Table 26. Scan-Limit Register Format
Table 27. Global Intensity Register Format
P1 Blink Phase
P0 Blink Phase
Intensity for all digits is controlled by one setting in the global intensity register.
Intensity for digits is controlled by the individual settings in the intensity10 and
intensity76 registers.
Display Digit 0 only
Display Digits 0 and 1
Display Digits 0 1 2
Display Digits 0 1 2 3
Display Digits 0 1 2 3 4
Display Digits 0 1 2 3 4 5
Display Digits 0 1 2 3 4 5 6
Display Digits 0 1 2 3 4 5 6 7
15/16 (max on)
1/16 (min on)
CYCLE
DUTY
10/16
11/16
12/16
13/16
14/16
15/16
2/16
3/16
4/16
5/16
6/16
7/16
8/16
9/16
2-Wire Interfaced, 2.7V to 5.5V LED Display
SCAN
LIMIT
MODE
______________________________________________________________________________________
CURRENT (mA)
Driver with I/O Expander and Key Scan
SEGMENT
TYPICAL
12.5
17.5
22.5
27.5
32.5
37.5
37.5
2.5
7.5
10
15
20
25
30
35
5
MODE
ADDRESS CODE
D7
CODE (HEX)
(HEX)
0
1
ADDRESS
0x03
0x03
0x03
0x03
0x03
0x03
0x03
0x03
0x02
0x02
0x02
0x02
0x02
0x02
0x02
0x02
0x02
0x02
0x02
0x02
0x02
0x02
0x02
0x02
D6
I
I
D7
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
D7
X
X
X
X
X
X
X
X
D5
R
R
D6
D6
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
REGISTER DATA
D5
D5
D4
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
T
T
REGISTER DATA
REGISTER DATA
D7
P
P
D4
X
X
X
X
X
X
X
X
D4
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
D6
D3
E
E
0
1
D3
X
X
X
X
X
X
X
X
D3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
D5
R
R
REGISTER DATA
D2
0
0
0
0
1
1
1
1
D2
D2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
B
B
D4
T
T
D1
0
0
1
1
0
0
1
1
D1
D3
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
E
E
D1
X
X
D2
D0
B
B
0
0
1
0
1
0
1
1
D0
0
0
0
0
1
0
1
1
1
1
0
1
0
1
0
1
D1
X
X
CODE
CODE
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
HEX
0xXA
0xXB
0xXC
0xXD
0xX0
0xX1
0xX2
0xX3
0xX4
0xX5
0xX6
0xX7
0xX8
0xX9
0xXE
0xXF
HEX
D0
S
S
D0
S
S
27