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M5481B7
M5481 LED DISPLAY DRIVER FEATURES SUMMARY ■ 2 DIGIT LED DRIVER (14 segments) 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. 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 Figure 1. Package uc d te le ro P PDIP20 (Plastic package) Ob - DESCRIPTION The M5481 is a monolithic MOS integrated circuit produced with a N-channel silicon gate technology. 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 display brightness by setting a reference current (s) ct so s) t( du o Pr e Figure 2. Pin Connections let o 20 Output Bit 9 2 19 Output Bit 10 Output Bit 6 3 18 Output Bit 11 Output Bit 5 4 17 Output Bit 12 Output Bit 4 5 16 Output Bit 13 Output Bit 3 6 15 VSS 7 14 Output Bit 1 8 13 Output Bit 14 Data Enable Brightness Control O 1 Output Bit 2 bs Output Bit 8 Output Bit 7 9 12 Data In 10 11 Clock VDD REV. 2 April 2004 1/10
STM
STMicroelectronics NV
スイス
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