austriamicrosystems AS1116 64 路LED驱动方案
austriamicrosystems AS1116 64 LED Driver with Detailed Error Detection
The AS1116 is a compact LED driver for 64 single LEDs or 8 digits of 7-segments. The devices can be programmed via an SPI compatible 3-wire interface.
Every segment can be individually addressed and updated separately. Only one external resistor (RSET) is required to set the current. LED brightness can be controlled by analog or digital means.
The devices include an integrated BCD code-B/HEX decoder, multiplex scan circuitry, segment and display drivers, and a 64-bit memory. Internal memory stores the shift register settings, eliminating the need for continuous device reprogramming.
Additionally the AS1116 offers a diagnostic mode for easy and fast production testing and allows the use of the AS1116 for critical applications. The diagnostic allows to detect individual open or shorted LEDs...
