MAX6956 Maxim, MAX6956 Datasheet - Page 10

• Manufacturer Part Number: MAX6956
• Description: 2-Wire-Interfaced / 2.5V to 5.5V / 20-Port or 28-Port LED Display Driver and I/O Expander
• Manufacturer: Maxim

Figure 7. Two MAX6956s Controlling Seven 7-Segment Displays
Figure 9. Command and Single Data Byte Received
2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or
28-Port LED Display Driver and I/O Expander
Figure 8. Command Byte Received
10
VIRTUAL SEGMENTS
VIRTUAL SEGMENTS
HOW COMMAND BYTE AND DATA BYTE MAP INTO MAX6956's REGISTER
P0
P0
______________________________________________________________________________________
P1
P1
P2
P2
P3
P3
S
COMMAND BYTE IS STORED ON RECEIPT OF STOP CONDITION
7-SEGMENT DIGIT 1
P4
P4
P5
P5
P6
P6
S
ACKNOWLEDGE FROM MAX6956
COMMAND BYTE RECEIVED
P7
P7
SLAVE ADDRESS
P8
7-SEGMENT DIGIT 5
P8
P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 P27 P28 P29 P30 P31
P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 P27 P28 P29 P30 P31
ACKNOWLEDGE FROM MAX6956
SLAVE ADDRESS
R/W
7-SEGMENT DIGIT 2
0
A
D15 D14 D13 D12 D11 D10
R/W
7-SEGMENT DIGIT 6
0
ACKNOWLEDGE FROM MAX6956
COMMAND BYTE
A
D15 D14 D13 D12 D11 D10 D9
7-SEGMENT DIGIT 3
ACKNOWLEDGE FROM MAX6956
D9
COMMAND BYTE
D8
A
7-SEGMENT DIGIT 7
D7
D6
ACKNOWLEDGE FROM MAX6956
D5
D8
DATA BYTE
D4
7-SEGMENT DIGIT 4
1 BYTE
A
D3
V+
P
D2
D1
D0
V+
A
P