Datasheet

Note:

1.Thisiscurrentcapabilityperpowerpin.

2.ThesepinsareconnectedtotheSoCdirectly.Theyareopen-drain(eitherpulledupordrivenlowbytheSoC

whenconﬁguredasoutputs).ThemaxdrivethatmeetsthedatasheetVOLis±2mA.

3.ThesepinsconnecttoTITXB0108leveltranslators.Duetothedesignofthesedevices,theoutputdriversarevery

weak,sotheycanbeoverdrivenbyanotherconnecteddeviceoutputforbidirectionalsupport.

4.IntheType/Dircolumn,outputistoexpansionheader.Inputisfromexpansionheader.Bidirisforbidirectional

signals..

5.Wherethesignaldirectionisinputoroutputinthistable,thismatchesthetypicalspecialfunctionusage(e.g.SPI,

I2S,etc.).ThedirectionisbidirectionaliftheseareconﬁguredasGPIOs.

6.All signalsonthe40-pinheaderare3.3Vlevels.