MAX6955 Maxim, MAX6955 Datasheet - Page 17

• 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

Figure 10. Multiplex Timing Diagram (OSC = 4MHz)
2-Wire Interfaced, 2.7V to 5.5V LED Display
DIGIT 0 CATHODE
DRIVER INTENSITY
SETTINGS
ANODE (LIT)
ANODE (UNLIT)
______________________________________________________________________________________
(MAX ON)
1/16TH
(MIN ON)
2/16TH
3/16TH
4/16TH
5/16TH
6/16TH
7/16TH
8/16TH
9/16TH
10/16TH
11/16TH
12/16TH
13/16TH
14/16TH
15/16TH
15/16TH
HIGH-Z
HIGH-Z
Driver with I/O Expander and Key Scan
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
CURRENT SOURCE ENABLED
DIGIT 0
200µs
HIGH-Z
HIGH-Z
DIGIT 1
HIGH-Z
HIGH-Z
DIGIT 2
ONE COMPLETE 1.6ms MULTIPLEX CYCLE AROUND 8 DIGITS
HIGH-Z
DIGIT 0's 200µs MULTIPLEX TIMESLOT
HIGH-Z
DIGIT 3
HIGH-Z
HIGH-Z
MINIMUM 12.5µs INTERDIGIT BLANKING INTERVAL
DIGIT 4
HIGH-Z
HIGH-Z
HIGH-Z
DIGIT 5
HIGH-Z
HIGH-Z
DIGIT 6
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
DIGIT 7
START OF
NEXT CYCLE
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