Serially Interfaced, +2.7V to +5.5V,

5- and 8-Digit LED Display Drivers

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13

Figure 4. Multiplex and Intensity Timing Diagram

200

µs TIME SLOT

DIGIT 0

200

µs TIME SLOT

DIGIT 1

200

µs TIME SLOT

DIGIT 2

200

µs TIME SLOT

DIGIT 3

200

µs TIME SLOT

DIGIT 4

200

µs TIME SLOT

DIGIT 5

200

µs TIME SLOT

DIGIT 6

200

µs TIME SLOT

DIGIT 7

200

µs TIME SLOT

DIGIT 0

ONE COMPLETE 1.6ms MULTIPLEX CYCLE AROUND 8 DIGITS

DIGIT 0's 200

µs MULTIPLEX TIME SLOT

START OF NEXT

CYCLE

LOW

LOW

HIGH-Z

HIGH-Z

HIGH-Z

HIGH-Z

CURRENT SOURCE ENABLED

1/16TH

(MIN ON)

ANODE

MIN ON

2/16TH

LOW

HIGH-Z

3/16TH

LOW

HIGH-Z

13/16TH

LOW

HIGH-Z

14/16TH

LOW

HIGH-Z

15/16TH

LOW

HIGH-Z

HIGH-Z

HIGH-Z

16/16TH

MAX ON

MINIMUM 12.5

µs INTERDIGIT BLANKING INTERVAL

CURRENT SOURCE ENABLED

HIGH-Z

HIGH-Z

ANODE

MAX ON

ANODE (UNLIT)

DIGIT CATHODE

DRIVER INTENSITY

SETTINGS