Ref="U1" pin="1"/> 467, 3.09x3.15mm, 52 Ball, X-staggered. 12mm CR1220 battery holder, http://www.keyelco.com/product-pdf.cfm?p=710 AA CR2. FNR3015S, 3.0x3.0x1.5mm, https://datasheet.lcsc.com/lcsc/1806131217_cjiang-Changjiang-Microelectronics-Tech-FNR5040S3R3NT_C167960.pdf Inductor, Changjiang, FNR8040S. New Pull Request
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