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AS1105 - Serially interfaced 4-digit LED driver

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.

Key Features

  • an extremely low shutdown current of only 20µA and an operational current of less than 500µA. The number of visible digits can be programmed as well. The AS1105 can be reset by software and an external clock can be used. Several test modes support easy debugging. AS1105 is offered in a 20-pin SOIC package. Figure 1. AS1105 - Typical.

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Datasheet Details

Part number AS1105
Manufacturer ams OSRAM
File Size 150.12 KB
Description Serially interfaced 4-digit LED driver
Datasheet download datasheet AS1105 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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high performance needs great design. AS1105 Serially interfaced 4-digit LED driver datasheet Please be patient while we update our brand image as austriamicrosystems and TAOS are now ams. www.ams.com 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.