EESchema Schematic File Version 2 LIBS:power LIBS:device LIBS:transistors LIBS:conn LIBS:linear LIBS:regul LIBS:74xx LIBS:cmos4000 LIBS:adc-dac LIBS:memory LIBS:xilinx LIBS:microcontrollers LIBS:dsp LIBS:microchip LIBS:analog_switches LIBS:motorola LIBS:texas LIBS:intel LIBS:audio LIBS:interface LIBS:digital-audio LIBS:philips LIBS:display LIBS:cypress LIBS:siliconi LIBS:opto LIBS:atmel LIBS:contrib LIBS:valves LIBS:silabs LIBS:ft232rl LIBS:ch340g LIBS:lm2840 LIBS:mcp1700 LIBS:backplane-cache EELAYER 25 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 1 1 Title "" Date "" Rev "" Comp "" Comment1 "" Comment2 "" Comment3 "" Comment4 "" $EndDescr $Comp L USB_B P3 U 1 1 5948EBA5 P 5200 2500 F 0 "P3" H 5400 2300 50 0000 C CNN F 1 "USB_B" H 5150 2700 50 0000 C CNN F 2 "MyUSB:USB3145-30-1-A" V 5150 2400 50 0001 C CNN F 3 "http://www.farnell.com/datasheets/1841848.pdf" V 5150 2400 50 0001 C CNN F 4 "2443141" H 5200 2500 60 0001 C CNN "Farnell" 1 5200 2500 1 0 0 -1 $EndComp Text GLabel 1850 2250 0 60 UnSpc ~ 0 A5V Text GLabel 1850 2350 0 60 UnSpc ~ 0 ADC1 Text GLabel 1850 2450 0 60 UnSpc ~ 0 ADC2 Text GLabel 2350 2350 2 60 UnSpc ~ 0 ADC3 Text GLabel 2350 2250 2 60 UnSpc ~ 0 AGND $Comp L CONN_02X03 P1 U 1 1 594F86D2 P 2100 2350 F 0 "P1" H 2100 2550 50 0000 C CNN F 1 "CONN_02X03" H 2100 2150 50 0001 C CNN F 2 "Pin_Headers:Pin_Header_Straight_2x03" H 2100 1150 50 0001 C CNN F 3 "" H 2100 1150 50 0000 C CNN 1 2100 2350 1 0 0 -1 $EndComp Text GLabel 2350 2450 2 60 UnSpc ~ 0 ADC4 $Comp L CH340G U1 U 1 1 594FA4BA P 5150 4200 F 0 "U1" H 5150 3700 60 0000 C CNN F 1 "CH340G" H 5150 4700 60 0000 C CNN F 2 "SMD_Packages:SO-16-N" H 5350 3550 60 0001 C CNN F 3 "http://cdn2.boxtec.ch/pub/diverse/ch340g-datasheet.pdf" H 5350 3550 60 0001 C CNN 1 5150 4200 1 0 0 -1 $EndComp Text GLabel 9050 2000 0 60 UnSpc ~ 0 3.3V Text GLabel 9050 2100 0 60 UnSpc ~ 0 GND Text GLabel 9050 2200 0 60 UnSpc ~ 0 I2C_SCL Text GLabel 9050 2300 0 60 UnSpc ~ 0 I2C_SDA Text GLabel 9050 2400 0 60 UnSpc ~ 0 UART_TX Text GLabel 9050 2600 0 60 UnSpc ~ 0 DAC1 Text GLabel 9550 2600 2 60 UnSpc ~ 0 DAC2 Text GLabel 9550 2300 2 60 UnSpc ~ 0 GPIO3 Text GLabel 9550 2400 2 60 UnSpc ~ 0 GPIO4 Text GLabel 9050 2500 0 60 UnSpc ~ 0 UART_RX Text GLabel 9550 2200 2 60 UnSpc ~ 0 GPIO2 Text GLabel 9550 2100 2 60 UnSpc ~ 0 GPIO1 Text GLabel 9550 2000 2 60 UnSpc ~ 0 GPIO0 Text GLabel 9550 2500 2 60 UnSpc ~ 0 nRST $Comp L CONN_02X07 P4 U 1 1 594FADC8 P 9300 2300 F 0 "P4" H 9300 2700 50 0000 C CNN F 1 "CONN_02X07" V 9300 2300 50 0001 C CNN F 2 "Pin_Headers:Pin_Header_Straight_2x07" H 9300 1100 50 0001 C CNN F 3 "" H 9300 1100 50 0000 C CNN 1 9300 2300 1 0 0 -1 $EndComp Text GLabel 9050 3000 0 60 UnSpc ~ 0 3.3V Text GLabel 9050 3100 0 60 UnSpc ~ 0 GND Text GLabel 9050 3200 0 60 UnSpc ~ 0 I2C_SCL Text GLabel 9050 3300 0 60 UnSpc ~ 0 I2C_SDA Text GLabel 9050 3400 0 60 UnSpc ~ 0 UART_TX Text GLabel 9050 3600 0 60 UnSpc ~ 0 DAC1 Text GLabel 9550 3600 2 60 UnSpc ~ 0 DAC2 Text GLabel 9550 3300 2 60 UnSpc ~ 0 GPIO3 Text GLabel 9550 3400 2 60 UnSpc ~ 0 GPIO4 Text GLabel 9050 3500 0 60 UnSpc ~ 0 UART_RX Text GLabel 9550 3200 2 60 UnSpc ~ 0 GPIO2 Text GLabel 9550 3100 2 60 UnSpc ~ 0 GPIO1 Text GLabel 9550 3000 2 60 UnSpc ~ 0 GPIO0 Text GLabel 9550 3500 2 60 UnSpc ~ 0 nRST $Comp L CONN_02X07 P5 U 1 1 594FAEEA P 9300 3300 F 0 "P5" H 9300 3700 50 0000 C CNN F 1 "CONN_02X07" V 9300 3300 50 0001 C CNN F 2 "Pin_Headers:Pin_Header_Straight_2x07" H 9300 2100 50 0001 C CNN F 3 "" H 9300 2100 50 0000 C CNN 1 9300 3300 1 0 0 -1 $EndComp Text GLabel 1850 3000 0 60 UnSpc ~ 0 ADC1 Text GLabel 1850 3100 0 60 UnSpc ~ 0 ADC2 Text GLabel 2350 3000 2 60 UnSpc ~ 0 ADC3 Text GLabel 2350 2900 2 60 UnSpc ~ 0 AGND $Comp L CONN_02X03 P2 U 1 1 594FAFF9 P 2100 3000 F 0 "P2" H 2100 3200 50 0000 C CNN F 1 "CONN_02X03" H 2100 2800 50 0001 C CNN F 2 "Pin_Headers:Pin_Header_Straight_2x03" H 2100 1800 50 0001 C CNN F 3 "" H 2100 1800 50 0000 C CNN 1 2100 3000 1 0 0 -1 $EndComp Text GLabel 2350 3100 2 60 UnSpc ~ 0 ADC4 NoConn ~ 5650 4550 NoConn ~ 5650 4450 NoConn ~ 5650 4350 NoConn ~ 5650 4250 NoConn ~ 5650 3950 $Comp L Crystal Y? U 1 1 594FC664 P 3500 4550 F 0 "Y?" H 3500 4700 50 0000 C CNN F 1 "Crystal" H 3500 4400 50 0000 C CNN F 2 "Crystals:Crystal_HC49-SD_SMD" H 3500 4550 50 0001 C CNN F 3 "http://www.farnell.com/datasheets/1658661.pdf" H 3500 4550 50 0001 C CNN F 4 "9713344" H 3500 4550 60 0001 C CNN "Farnell" 1 3500 4550 -1 0 0 1 $EndComp $Comp L C C? U 1 1 594FC845 P 3200 4750 F 0 "C?" H 3225 4850 50 0000 L CNN F 1 "22p" H 3225 4650 50 0000 L CNN F 2 "Resistors_SMD:R_0805" H 3238 4600 50 0001 C CNN F 3 "" H 3200 4750 50 0001 C CNN F 4 "1625484" H 3200 4750 60 0001 C CNN "Farnell" 1 3200 4750 1 0 0 -1 $EndComp $Comp L C C? U 1 1 594FCB93 P 3800 4750 F 0 "C?" H 3825 4850 50 0000 L CNN F 1 "22p" H 3825 4650 50 0000 L CNN F 2 "Resistors_SMD:R_0805" H 3838 4600 50 0001 C CNN F 3 "" H 3800 4750 50 0001 C CNN F 4 "1625484" H 3800 4750 60 0001 C CNN "Farnell" 1 3800 4750 1 0 0 -1 $EndComp $Comp L GND #PWR? U 1 1 594FCC52 P 3200 4950 F 0 "#PWR?" H 3200 4700 50 0001 C CNN F 1 "GND" H 3200 4800 50 0000 C CNN F 2 "" H 3200 4950 50 0000 C CNN F 3 "" H 3200 4950 50 0000 C CNN 1 3200 4950 1 0 0 -1 $EndComp $Comp L GND #PWR? U 1 1 594FCC7F P 3800 4950 F 0 "#PWR?" H 3800 4700 50 0001 C CNN F 1 "GND" H 3800 4800 50 0000 C CNN F 2 "" H 3800 4950 50 0000 C CNN F 3 "" H 3800 4950 50 0000 C CNN 1 3800 4950 1 0 0 -1 $EndComp Text GLabel 5200 2800 3 60 BiDi ~ 0 D+ Text GLabel 5100 2800 3 60 BiDi ~ 0 D- Text GLabel 4650 4350 0 60 BiDi ~ 0 D- Text GLabel 4650 4250 0 60 BiDi ~ 0 D+ $Comp L +5V #PWR? U 1 1 594FDB60 P 4650 2650 F 0 "#PWR?" H 4650 2500 50 0001 C CNN F 1 "+5V" H 4650 2790 50 0000 C CNN F 2 "" H 4650 2650 50 0000 C CNN F 3 "" H 4650 2650 50 0000 C CNN 1 4650 2650 1 0 0 -1 $EndComp Text GLabel 1850 2900 0 60 UnSpc ~ 0 A5V Text GLabel 2000 1450 0 60 UnSpc ~ 0 A5V $Comp L GND #PWR? U 1 1 594FE150 P 5600 2900 F 0 "#PWR?" H 5600 2650 50 0001 C CNN F 1 "GND" H 5600 2750 50 0000 C CNN F 2 "" H 5600 2900 50 0000 C CNN F 3 "" H 5600 2900 50 0000 C CNN 1 5600 2900 1 0 0 -1 $EndComp $Comp L GND #PWR? U 1 1 594FE301 P 5600 2400 F 0 "#PWR?" H 5600 2150 50 0001 C CNN F 1 "GND" H 5600 2250 50 0000 C CNN F 2 "" H 5600 2400 50 0000 C CNN F 3 "" H 5600 2400 50 0000 C CNN 1 5600 2400 1 0 0 -1 $EndComp Text GLabel 2000 1850 0 60 UnSpc ~ 0 AGND $Comp L GND #PWR? U 1 1 594FE3CE P 2550 1850 F 0 "#PWR?" H 2550 1600 50 0001 C CNN F 1 "GND" H 2550 1700 50 0000 C CNN F 2 "" H 2550 1850 50 0000 C CNN F 3 "" H 2550 1850 50 0000 C CNN 1 2550 1850 1 0 0 -1 $EndComp $Comp L LM2840 U? U 1 1 594FEA3B P 5250 1450 F 0 "U?" H 5550 1200 60 0000 C CNN F 1 "LM2840" H 5050 1200 60 0000 C CNN F 2 "" H 5250 1450 60 0000 C CNN F 3 "" H 5250 1450 60 0000 C CNN 1 5250 1450 1 0 0 -1 $EndComp $Comp L MMBT3904 Q? U 1 1 594FEC4A P 8550 4700 F 0 "Q?" H 8750 4775 50 0000 L CNN F 1 "MMBT3904" H 8750 4700 50 0000 L CNN F 2 "SOT-23" H 8750 4625 50 0001 L CIN F 3 "https://www.fairchildsemi.com/datasheets/MM/MMBT3904.pdf" H 8550 4700 50 0001 L CNN F 4 "1757936RL" H 8550 4700 60 0001 C CNN "Farnell" 1 8550 4700 1 0 0 -1 $EndComp $Comp L MMBT3904 Q? U 1 1 594FEF7C P 8550 5500 F 0 "Q?" H 8750 5575 50 0000 L CNN F 1 "MMBT3904" H 8750 5500 50 0000 L CNN F 2 "SOT-23" H 8750 5425 50 0001 L CIN F 3 "https://www.fairchildsemi.com/datasheets/MM/MMBT3904.pdf" H 8550 5500 50 0001 L CNN F 4 "1757936RL" H 8550 5500 60 0001 C CNN "Farnell" 1 8550 5500 1 0 0 1 $EndComp $Comp L R R? U 1 1 594FF0B7 P 8050 4700 F 0 "R?" V 8130 4700 50 0000 C CNN F 1 "10k" V 8050 4700 50 0000 C CNN F 2 "Resistors_SMD:R_0805" V 7980 4700 50 0001 C CNN F 3 "" H 8050 4700 50 0000 C CNN F 4 "9237755" V 8050 4700 60 0001 C CNN "Farnell" 1 8050 4700 0 1 1 0 $EndComp Text GLabel 5650 4050 2 60 Output ~ 0 RTS Text GLabel 5650 4150 2 60 Output ~ 0 DTR Text GLabel 7700 4700 0 60 Input ~ 0 DTR $Comp L R R? U 1 1 594FF500 P 8050 5500 F 0 "R?" V 8130 5500 50 0000 C CNN F 1 "10k" V 8050 5500 50 0000 C CNN F 2 "Resistors_SMD:R_0805" V 7980 5500 50 0001 C CNN F 3 "" H 8050 5500 50 0000 C CNN F 4 "9237755" V 8050 5500 60 0001 C CNN "Farnell" 1 8050 5500 0 1 1 0 $EndComp Text GLabel 7700 5500 0 60 Input ~ 0 RTS Text GLabel 8700 5850 2 60 UnSpc ~ 0 GPIO0 Text GLabel 8700 4350 2 60 UnSpc ~ 0 nRST $Comp L PWR_FLAG #FLG? U 1 1 59500694 P 2200 1800 F 0 "#FLG?" H 2200 1895 50 0001 C CNN F 1 "PWR_FLAG" H 2200 1980 50 0000 C CNN F 2 "" H 2200 1800 50 0000 C CNN F 3 "" H 2200 1800 50 0000 C CNN 1 2200 1800 1 0 0 -1 $EndComp $Comp L PWR_FLAG #FLG? U 1 1 5950045A P 2200 1400 F 0 "#FLG?" H 2200 1495 50 0001 C CNN F 1 "PWR_FLAG" H 2200 1580 50 0000 C CNN F 2 "" H 2200 1400 50 0000 C CNN F 3 "" H 2200 1400 50 0000 C CNN 1 2200 1400 1 0 0 -1 $EndComp Wire Wire Line 3650 4550 4650 4550 Wire Wire Line 4650 4450 3800 4450 Wire Wire Line 3800 4450 3800 4300 Wire Wire Line 3800 4300 3200 4300 Wire Wire Line 3200 4300 3200 4600 Wire Wire Line 3200 4550 3350 4550 Connection ~ 3200 4550 Connection ~ 3800 4550 Wire Wire Line 3800 4550 3800 4600 Wire Wire Line 3800 4900 3800 4950 Wire Wire Line 3200 4900 3200 4950 Wire Wire Line 5000 2800 5000 2900 Wire Wire Line 5000 2900 4650 2900 Wire Wire Line 4650 2900 4650 2650 Wire Wire Line 5300 2800 5300 2900 Wire Wire Line 5300 2900 5600 2900 Wire Wire Line 5500 2400 5600 2400 Wire Wire Line 8200 4700 8350 4700 Wire Wire Line 7700 4700 7900 4700 Wire Wire Line 7700 5500 7900 5500 Wire Wire Line 8200 5500 8350 5500 Wire Wire Line 8650 5700 8650 5850 Wire Wire Line 8650 5850 8700 5850 Wire Wire Line 8700 4350 8650 4350 Wire Wire Line 8650 4350 8650 4500 Wire Wire Line 8650 4900 8650 4900 Connection ~ 7850 5500 Wire Wire Line 8650 5300 8650 5250 Wire Wire Line 8650 5250 7800 5250 Wire Wire Line 7800 5250 7800 4700 Connection ~ 7800 4700 Wire Wire Line 7850 5500 7850 4950 Wire Wire Line 7850 4950 8650 4950 Wire Wire Line 8650 4950 8650 4900 $Comp L +5V #PWR? U 1 1 594FE0AC P 2550 1450 F 0 "#PWR?" H 2550 1300 50 0001 C CNN F 1 "+5V" H 2550 1590 50 0000 C CNN F 2 "" H 2550 1450 50 0000 C CNN F 3 "" H 2550 1450 50 0000 C CNN 1 2550 1450 1 0 0 -1 $EndComp Wire Wire Line 2000 1450 2550 1450 Wire Wire Line 2200 1400 2200 1450 Connection ~ 2200 1450 Wire Wire Line 2000 1850 2550 1850 Wire Wire Line 2200 1800 2200 1850 Connection ~ 2200 1850 $EndSCHEMATC