Catalyst Semiconductor has added a 16-channel I2C/SMBus LED driver/blinker to its range of bus products.
The CAT9552 drives up to 16 LEDs in either programmable flashing or ‘on/off’ modes. The device is suitable for applications including advertising point-of-sale signage with flashing LEDs and any type of consumer or industrial equipment with on/off LED indicators.
It is designed with an internal oscillator and two programmable on/off or blink rate timers, adjustable from 0.02 to 5.8 s. This oscillator and its two timers reduce overall parts count and reduce the I2C bus traffic.
An added benefit of the CAT9552 is that I/Os not used for controlling LEDs can be used as general-purpose I/Os.
Features include: 16 open drain outputs drive 25 mA each; two programmable on/off and blink rate timers (adjustable from 0.02 to 5.8 s); I/Os can be used as general-purpose I/Os.
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