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

We are still in the hardware phase, so we haven't begun to characterize aspects of the software such as update frequency. We have designed it to directly drive one LED per channel (the intent is driving a 16x4 RGB matrix). The current limiting resistors are on the board, but we intentionally chose parts which had zero-ohm equivalents so the board could easily be adapted to drive off board transistors. While the fequency of PWM value changes would be limited by the frequency of the I2C bus, once a value is written the MAX7313 will continue to drive the LED at that duty cycle.

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