M5481 Ver la hoja de datos (PDF) - STMicroelectronics

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M5481

LED DISPLAY DRIVER

STMicroelectronics 

M5481

LED DISPLAY DRIVER

FEATURES SUMMARY

■ 2 DIGIT LED DRIVER (14 segments)

■ CURRENT GENERATOR OUTPUTS (no

registor required)

■ CONTINUOUS BRIGHTNESS CONTROL

■ SERIAL DATA INPUT

■ DATA ENABLE

■ WIDE SUPPLY VOLTAGE OPERATION

■ TLL COMPATIBILITY

■ APPLICATION EXAMPLES

■ MICROPROCESSOR DISPLAYS

■ INDUSTRIAL CONTROL INDICATOR

■ RELAY DRIVER

■ INSTRUMENTATION READOUTS

DESCRIPTION

The M5481 is a monolithic MOS integrated circuit

produced with a N-channel silicon gate technolo-

gy. It uses the M5450 die packaged in a 20-pin

plastic package copper frame, making it ideal for a

1-digit display. A single pin controls the LED dis-

play brightness by setting a reference current

through a variable resistor connected either to VDD

or to a separate supply of 13.2V maximum.

The M5481 is a pin-to-pin replacement of the NS

MM 5481.

Figure 1. Package

PDIP20

(Plastic package)

Figure 2. Pin Connections

Output Bit 8

1

Output Bit 7

2

Output Bit 6

3

Output Bit 5

4

Output Bit 4

5

Output Bit 3

6

Output Bit 2

7

Output Bit 1

8

Brightness Control

9

VDD

10

20 Output Bit 9

19 Output Bit 10

18 Output Bit 11

17 Output Bit 12

16 Output Bit 13

15 VSS

14 Output Bit 14

13 Data Enable

12 Data In

11 Clock

April 2004

REV. 2

1/10

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