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Altera_Forum
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15 years ago

CPLD MaxII, pull up resistor and led

Hello I have to drive 26 Leds through the CPLD MaxII. I have seen that this CPLD have internal pull up resistor that can be enable or not and apparently we can choose their value. My...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

If you don't need high average LED currents, multiplexing the LEDs in a matrix can save output pins and resistors. Using common chip resistor arrays, 26 shouldn't be a problem, however.