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Member #394592

Member Since: January 2, 2013

Country: United States

  • Newbe question: When I'm looking at a device's datasheet how do I find the: "maximum current draw"? For example when I'm looking at my MCU datasheet it says "Max current sourced by ports: 200mA, Max current sunk by ports: 200mA, Max output current sunk/sourced by I/O pin: 25mA,etc" Should I select the 200mA or add both the sourced & sunk or do I add up all the i/o pins (25mA) that are currently in use? I want to clearly understand how much current to use in the power equation. Thank you in advance!

  • Newbe question: When I'm looking at a device's datasheet how do I find the: "maximum current draw"? For example when I'm looking at my MCU datasheet it says "Max current sourced by ports: 200mA, Max current sunk by ports: 200mA, Max output current sunk/sourced by I/O pin: 25mA,etc" Should I select the 200mA or add both the sourced & sunk or do I add up all the i/o pins (25mA) that are currently in use? I want to clearly understand how much current to use in the power equation. Thank you in advance!

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