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AS1105 Serially interfaced 4-digit LED driver datasheet
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AS1105
Serially Interfaced, 4-Digit LED Driver
1 General Description
The AS1105 is an LED driver for 7-segment numeric displays of up to 4 digits. The AS1105 can be programmed via a conventional 4wire serial interface. The device includes a BCD code-B decoder, a multiplex scan circuitry, segment and display drivers, and a 32-bit memory. The memory is used to store the LED settings, so that continuous reprogramming is not necessary. Every individual segment can be addressed and updated separately. Only one external resistor is required to set the current through the LED display.