Datasheet

MAX6952
4-Wire Interfaced, 2.7V to 5.5V,
4-Digit 5
✕
7 Matrix LED Display Driver
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DIGIT 1
ROW 1
DIGIT 1
ROW 2
DIGIT 1
ROW 3
DIGIT 1
ROW 4
DIGIT 1
ROW 5
DIGIT 1
ROW 6
DIGIT 1
ROW 7
DIGIT 3
ROW 1
DIGIT 3
ROW 2
DIGIT 3
ROW 3
DIGIT 3
ROW 4
DIGIT 3
ROW 5
DIGIT 3
ROW 6
DIGIT 3
ROW 7
DIGIT 1
ROW 1
COLUMN DRIVER
PINS O19-O23
DIGIT 0
ROW 1
DIGIT 0
ROW 2
DIGIT 0
ROW 3
DIGIT 0
ROW 4
DIGIT 0
ROW 5
DIGIT 0
ROW 6
DIGIT 0
ROW 7
DIGIT 2
ROW 1
DIGIT 2
ROW 2
DIGIT 2
ROW 3
DIGIT 2
ROW 4
DIGIT 2
ROW 5
DIGIT 2
ROW 6
DIGIT 2
ROW 7
DIGIT 0
ROW 1
COLUMN DRIVER
PINS O14-O18
DIGIT 1 ROW 1’s 100µs MULTIPLEX TIMESLOT
CURRENT SOURCE
1/16TH
2/16TH
(MIN ON)
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
16/16TH
(MAX ON)
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
ONE COMPLETE 1.4ms MULTIPLEX CYCLE AROUND 14 ROWS
100µs
DIGIT 1 COLUMN
DRIVER OUTPUTS
PINS O19-O23
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
HIGH-Z
DIGITS 0 & 1
ROW OUTPUTS
PINS O0–O6
HIGH-Z
LOW
DIGITS 2 & 3
ROW OUTPUTS
PINS O7–O13
HIGH-Z
HIGH-Z
HIGH-Z
MINIMUM 6.25µs INTERDIGIT BLANKING INTERVAL
START OF
NEXT CYCLE
Figure 7. Multiplex Timing Diagram (OSC = 4MHz)