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tiva launchpad的AVREF引脚在板的哪里
楼主说的是TM4C123x还是TM4C129x的LaunchPad？
TM4C123x LaunchPad用的是TM4C123GH6PM。这颗芯片是64脚封装，不支持外部参考输入，没有这个脚。
TM4C129x LaunchPad用的是TM4C1294NCPDT。这颗芯片是128脚封装，VREFA是8脚。
谢谢
