In SX Microcontrollers, SX/B Compiler and SX-Key Tool, JonnyMac wrote:

I wrote that program using the components available on the PDB -- it works great.  Keep in mind that the displays are in fact multiplexed, so the LEDs are never on 100% of the time.  Even if you have all eight LED bits on the duty cycle is a little short of 100% because the blanked in the interrupt before the new segment data is moved into them.

Assuming a 1.5v forward voltage for the segments the current draw with a 470 series resistor is about 7.4 mA each, 59.5 mA for all eight together -- the SX can handle this.

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