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Altera_Forum
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14 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
14 years ago

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apparently we can choose their value

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No, they are fixed. Output drive strength can be selected low or high. But you'll normally need external current limiting resistors to set the current of connected LEDs.