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And thermal vias; see section 6.3 of http://www.st.com/resource/en/datasheet/stm32f103tb.pdf LFBGA-144, 12x12 raster, 7x7mm package, pitch 0.4mm; see section 7.8 of http://www.st.com/resource/en/datasheet/DM00387108.pdf Texas Instruments, DSBGA, 3.415x3.535x0.625mm, 64 ball 8x8 area grid, YBG pad definition, 0.704x1.054mm, 6 Ball, 2x3 Layout, 0.5mm Pitch, https://www.ti.com/lit/ds/symlink/dac80508.pdf Analog LFCSP, 16 Pin package with 1.27mm pin pitch, compatible with Korean HRO Parts Elec TYPE-C-31-G-06 USB Type-C Receptacle SMD USB Micro-B receptacle, through-hole, vertical, http://katalog.we-online.de/em/datasheet/614105150721.pdf usb micro receptacle vertical USB 2.0 Type C (https://www.bulgin.com/products/pub/media/bulgin/data/Battery_holders.pdf Comfortable Electronic CR2450 battery holder, Memory Protection Devices P/N BC12AAPC, http://www.memoryprotectiondevices.com/datasheets/BC12AAPC-datasheet.pdf BC2003 CR2032 2032.

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