电子称原理图.pdf

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1、12345678C1U11602X1VCCA30pFU2A240VCCY1GNDVSSVDDVORSR/WENDB0DB1DB2DB3DB4DB5DB6DB7LCD+LCD-XTAL39P00VCCGND1P0.0/AD0C2X11938P01XTAL1P0.1/AD1123456789X2X21837P0210111213141516XTAL2P0.2/AD236P03P0.3/AD330pF35P04P0.4/AD434P05P0.5/AD533P06P0.6/AD6时钟电路P0.7/AD732P07VCCRSRWENP00P01P02P03P0

2、4P05P06P07RST9VCCRST311RSGNDEA/VPPP1.0/T2292RWPSENP1.1/T2EXVCC303ENALEP1.2R14jiareP1.3ResTap5DQP1.41KRXD106D+LCD1602液晶显示P3.0/RxDP1.5TXD117D-P3.1/TxDP1.6P32128P17P3.2/INT0P1.7P3313P3.3/INT1S1P341421P20P3.4/T0P2.0/A8C3P351522P21P3.5/T1P2.1/A9P361623P22P3.6/WRP2.2/A10100pFP371724P

3、23P3.7/RDP2.3/A1125P24P2.4/A12RST26P25VCCP2.5/A1327P26C4U3C5BP2.6/A14B2028P27161VSSP2.7/A15VCCC1+R2AT89C5110423104VS+C1-6C6VS-10KGND4C2+C7C8J1104104155104GNDC2-1GND689TXDR2INR2OUT112710RXDT2OUTT2IN复位电路71411T1OUTT1INAT89C51单片机1031312R1INR1OUT84MAX2329VCC5DConnector91615141312111

4、09R3通讯模块1K12345678CP00P01P02P03P04P05P06P07CP0口排阻R4100KR547KVCCVCC4U4AU5R62LM324AJC9111820K1AINPREFINGND3217GNDAINNREFOUTR73161uFAGNDAVDDRdRa415VBIASMODER811P20514P22CSDRDY1KC10P21613P23DSYNSSDOUTRcRb712P24XINSDIO811P25XOUTSCLKVCCGND12pF9102DGNDDVDDGNDY2GNDGNDXTALADS1210VCCR101

5、GNDC11GND10KDD信号放大模块12pF应变式称重信号采集模块AD采样模块GND12345678