Output Limitation

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oakbarn
 
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Output Limitation

Post by oakbarn »

M4 Grand Central - Is the a maximum ma output for any one output and a cumulative limitation on multiple outputs. The Mega 2560 has a limit of 20 ma per output and cumulative limitation of 200 ma.

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adafruit_support_bill
 
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Re: Output Limitation

Post by adafruit_support_bill »

The M4 is a substantially more complex device, with a number of special purpose pins and configurable drive strength. For most of the GPIO pins, the default output strength is 2mA. If the Output Driver Strength bit (DRVSTR) for the pin has been set to 1, it can source or sink 8mA. GPIO pins are also grouped in 'clusters', with total current limits per cluster. For full details, please refer to the datasheet:

Table 54-15 on page 1995 shows the DRVSTR configuration

https://www.mouser.com/datasheet/2/268/ ... 130176.pdf

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