arm7开发板原理图.pdf

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1、12345678DDIn32-bitdatamodebesupportedbelow,-UART2channelwithRTS/CTS-orUART0'sRxD/TxDwithRTS/CTS&SIOVDDU1116C1+VCCC9C120.1uF0.1uF32C1-V+VDD46C2+V-P1U2C11C13CCONNECTORDB90.1uFC0.1uF1515116C2-GNDC1+VCC621411TxD0C10C14T1OUTT1IN7nCTS0_M1312RxD0R1INR1OUT0.1uF0.1uF3TXD1_M710TxD132T

2、2OUTT2INC1-V+8nRTS0_MTXD2_M89RxD1R2INR2OUT446C2+V-95C15C16MAX3232C0.1uF5150.1uFC2-GNDnRTS0_M1411nRTS0P2T1OUTT1IN1312nCTS0CONNECTORDB9R1INR1OUTnCTS0_M710nRTS1T2OUTT2IN189nCTS1R2INR2OUT62TXD1_M7nCTS1_MMAX3232C3TXD2_M8nRTS1_M495BB(FEMAIL)nRTS1_MnCTS1_MUARTInterfaceIn32-bitmode,

3、UART0HandshakeAATitleSizeNumberRevisionA3Date:12-May-2003SheetofFile:F:LAYOUTARM_DEVELOP_BOARDV1.0ARM_DEVELOP_BOARD.DdbDrawnBy:12345678123456789101112DDVDDU3AD1LED012R5J1330CON40VDD74HC04LED40393837363534333231302928272625242322212019181716151413121110987654321U3BD2R6OM[1

4、:0]:BusSizeVDDLED13400:Byte(8-bit)S1330R9R10R11R1201:Halfword(16-bit)10:Word(32-bit)1374HC04LED4.7K4.7K4.7K4.7K11:TestModeDATA14DATA1524KEYIN3R1ENDIANU3CSW_PUSH210KEXTAL1XTAL1AIN7AIN6D3H:Big,L:LittleAVCOMAREFBAREFTLED256R7S2330D12SUSPDLED0LED1LED274HC0413nRTS1nCTS1nRTS0nCTS0

5、VD0VD1VD2VD3VCLKVLINEVMVFRAMELEDOM024KEYIN2R2SW_PUSH210KTxD1RxD1TxD0RxD0OM02VD7VD6VD5VD4VDD_CPUS3JP1OM1OM31324KEYIN1R3OM12R13SW_PUSH210KnDISP-ON1nEL-ON4.7KJP2OM2S413VDDADCEDNJ824KEYIN0R4123U3DHD3SW_PUSH210KVDDRTCnDISP-ON98DISP-ONJP32ENDIAN74HC0411U3EOM[3:2]:ClockMode00:Cryst

6、al,PLLonnEL-ON1110EL-ONJ1001:Externall,PLLonVD010:TestMode111:TestModeVD1R1574HC042VD234.7KVDD_CPUVDDRTCVD34VD45VD56VDDIOVDDADCVD67C17103VD7VR18nEL-ONVFRAME9BootROMBusSize,ENDIAN,andClockModeSelectCnDISP-ONVDD20KGNDC10VCLK11VLINE12C18103VCTL13VM14VD7VD6VD5VD4nRESET15TxD1RxD1

7、TxD0RxD0EL-ON16C19103XTAL1VDDIO17nRTS1nCTS1nRTS0nCTS0VD0VD1VD2VD3VCLKVLINEVMVFRAMEDISP-ON18D12SUSPDLED0LED1LED219X1VCC5.0CON2020DATA15AVCOMAREFBAREFT32.768kHzDATA14EXTAL1XTAL1AIN7AIN6RTCInputLCDCONNECTOREXTAL1VDDC20C21U422pF22pF12011911811711611511411311211111010910810710610

8、510410310210110099989796959493929190898887868584838281S3C44B0XR16R17VSS3AIN