M5450 Datasheet, PDF (1/8 Pages) STMicroelectronics – LED DISPLAY DRIVERS

M5450
M5451
. _{M5450 34 OUTPUTS/15mA SINK}
. _{M5451 35 OUTPUTS/15mA SINK}
. _{CURRENT GENERATOR OUTPUTS (NO EX-}
TERNAL RESISTORS REQUIRED)
. _{CONTINUOUS BRIGHTNESS CONTROL}
. _{SERIAL DATA INPUT}
. _{ENABLE (ON M5450)}
. _{WIDE SUPPLY VOLTAGE OPERATION}
. _{TTL COMPATIBILITY}
....^{Application Examples :}
MICROPROCESSOR DISPLAYS
INDUSTRIAL CONTROL INDICATOR
RELAY DRIVER
INSTRUMENTATION READOUTS
LED DISPLAY DRIVERS
A single pin controls the LED display brightness by
setting a reference current through a variable re-
sistor connected to VDD or to a separate supply of
13.2V maximum.
DIP40
(Plastic Package)
ORDER CODE : M5450B7 / M5451B7
DESCRIPTION
The M5450 and M5451 are monolithic MOS inte-
grated circuits produced with an N-channel silicon
gate technology. They are available in 40-pin dual
in-line plastic packages.
PIN CONNECTION
DIP40
V_SS
1
OUTPUT BIT 17
2
OUTPUT BIT 16
3
OUTPUT BIT 15
4
OUTPUT BIT 14
5
OUTPUT BIT 13
6
OUTPUT BIT 12
7
OUTPUT BIT 11
8
OUTPUT BIT 10
9
OUTPUT BIT 9
10
OUTPUT BIT 8
11
OUTPUT BIT 7
12
OUTPUT BIT 6
13
OUTPUT BIT 5
14
OUTPUT BIT 4
15
OUTPUT BIT 3
16
OUTPUT BIT 2
17
OUTPUT BIT 1
18
BRIGHTNESS CONTROL
19
V _DD
20
40
OUTPUT BIT 18
39
OUTPUT BIT 19
38
OUTPUT BIT 20
37
OUTPUT BIT 21
36
OUTPUT BIT 22
35
OUTPUT BIT 23
34
OUTPUT BIT 24
33
OUTPUT BIT 25
32
OUTPUT BIT 26
31
OUTPUT BIT 27
30
OUTPUT BIT 28
29
OUTPUT BIT 29
28
OUTPUT BIT 30
27
OUTPUT BIT 31
26
OUTPUT BIT 32
25
OUTPUT BIT 33
24
OUTPUT BIT 34
23
DATA ENABLE FOR M5450
OUTPUT BIT 35 FOR M5451
22
DATA IN
21
CLOCK IN
PLCC44
(Plastic Chip Carrier)
ORDER CODE : M5451Q
PLCC44
OUTPUT BIT 13 7
OUTPUT BIT 12 8
OUTPUT BIT 11 9
OUTPUT BIT 10 10
OUTPUT BIT 9 11
N.C. 12
OUTPUT BIT 8 13
OUTPUT BIT 7 14
OUTPUT BIT 6 15
OUTPUT BIT 5 16
OUTPUT BIT 4 17
39 OUTPUT BIT 23
38 OUTPUT BIT 24
37 OUTPUT BIT 25
36 OUTPUT BIT 26
35 OUTPUT BIT 27
34 N.C.
33 OUTPUT BIT 28
32 OUTPUT BIT 29
31 OUTPUT BIT 30
30 OUTPUT BIT 31
29 OUTPUT BIT 32
September 1993
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