LQFP-48(7x7) · 48P预览实物照片3D CADPinoutFootprint尺寸STM32F030C8T6-TDTDSEMIC(拓电半导体)·LQFP-48(7x7)READY48P7.0×7.0×1.40mmP=0.5mm标准电子与连接器元件