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:rca LIBS:RC6502 Video Adapter-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 Text GLabel 10600 3800 0 60 Input ~ 0 GND Text GLabel 10600 3900 0 60 Output ~ 0 VCC NoConn ~ 10600 5800 NoConn ~ 10600 4300 NoConn ~ 10600 4700 Text Notes 8500 7500 2 60 ~ 0 RC6502 Video Adapter Text Notes 10625 7650 2 60 ~ 0 A $Comp L CONN_01X39 J1 U 1 1 5938011B P 10800 4100 F 0 "J1" H 10800 6100 50 0000 C CNN F 1 "CONN_01X39" V 10900 4100 50 0000 C CNN F 2 "Pin_Headers:Pin_Header_Angled_1x39_Pitch2.54mm" H 10800 4100 50 0001 C CNN F 3 "" H 10800 4100 50 0001 C CNN 1 10800 4100 1 0 0 -1 $EndComp NoConn ~ 10600 5900 NoConn ~ 10600 4400 NoConn ~ 10600 4600 NoConn ~ 10600 6000 NoConn ~ 10600 4200 NoConn ~ 10600 3500 NoConn ~ 10600 3400 NoConn ~ 10600 3200 NoConn ~ 10600 3100 NoConn ~ 10600 3000 NoConn ~ 10600 2900 NoConn ~ 10600 2800 NoConn ~ 10600 2700 NoConn ~ 10600 2600 Text GLabel 1600 4600 0 60 Output ~ 0 OUT_D0 Text GLabel 1600 4500 0 60 Output ~ 0 OUT_D1 Text GLabel 1600 4400 0 60 Output ~ 0 OUT_D2 Text GLabel 1600 4300 0 60 Output ~ 0 OUT_D3 Text GLabel 1600 4200 0 60 Output ~ 0 OUT_D4 Text GLabel 1600 4100 0 60 Output ~ 0 OUT_D5 Text GLabel 1600 4000 0 60 Output ~ 0 OUT_D6 Text GLabel 5850 5550 2 60 Output ~ 0 OUT_RDA $Comp L CONN_02X20 J2 U 1 1 59380E36 P 1850 4750 F 0 "J2" H 1850 5800 50 0000 C CNN F 1 "CONN_02X20" V 1850 4750 50 0000 C CNN F 2 "Connectors:IDC_Header_Straight_40pins" H 1850 3800 50 0001 C CNN F 3 "" H 1850 3800 50 0001 C CNN 1 1850 4750 1 0 0 -1 $EndComp Text GLabel 2675 6200 3 60 Output ~ 0 GND NoConn ~ 10600 4800 NoConn ~ 10600 4900 NoConn ~ 10600 5000 NoConn ~ 10600 5100 NoConn ~ 10600 5200 NoConn ~ 10600 5300 NoConn ~ 10600 5400 NoConn ~ 10600 5500 NoConn ~ 10600 2200 NoConn ~ 10600 2300 NoConn ~ 10600 2400 NoConn ~ 10600 2500 NoConn ~ 10600 3600 NoConn ~ 10600 3700 NoConn ~ 10600 4000 NoConn ~ 10600 4100 NoConn ~ 1600 5700 NoConn ~ 1600 5400 NoConn ~ 1600 5300 NoConn ~ 1600 5200 NoConn ~ 1600 5100 NoConn ~ 1600 5000 NoConn ~ 1600 4900 NoConn ~ 2100 5600 NoConn ~ 1600 3800 NoConn ~ 1600 4800 NoConn ~ 2100 5100 NoConn ~ 2100 4900 NoConn ~ 2100 4700 NoConn ~ 2100 4600 NoConn ~ 2100 4500 NoConn ~ 2100 4400 NoConn ~ 2100 4300 NoConn ~ 2100 4200 NoConn ~ 2100 4100 NoConn ~ 2100 4000 NoConn ~ 2100 3900 Text GLabel 1600 3900 0 60 Output ~ 0 OUT_DA Text GLabel 2100 5500 2 60 Output ~ 0 P_RESET Text GLabel 2100 5400 2 60 Input ~ 0 OUT_RDA $Comp L ATMEGA328P-PU U1 U 1 1 5939AF11 P 4850 4850 F 0 "U1" H 4100 6100 50 0000 L BNN F 1 "ATMEGA328P-PU" H 5250 3450 50 0000 L BNN F 2 "Housings_DIP:DIP-28_W7.62mm_Socket" H 4850 4850 50 0001 C CIN F 3 "" H 4850 4850 50 0001 C CNN 1 4850 4850 1 0 0 -1 $EndComp $Comp L Crystal Y1 U 1 1 5939BD6D P 9500 5200 F 0 "Y1" H 9500 5350 50 0000 C CNN F 1 "16 Mhz" H 9500 5050 50 0000 C CNN F 2 "Crystals:Crystal_HC49-4H_Vertical" H 9500 5200 50 0001 C CNN F 3 "" H 9500 5200 50 0001 C CNN 1 9500 5200 0 1 1 0 $EndComp $Comp L C_Small C4 U 1 1 5939BE54 P 9700 5550 F 0 "C4" H 9710 5620 50 0000 L CNN F 1 "22pF" H 9710 5470 50 0000 L CNN F 2 "Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 9700 5550 50 0001 C CNN F 3 "" H 9700 5550 50 0001 C CNN 1 9700 5550 0 1 1 0 $EndComp $Comp L C_Small C3 U 1 1 5939BEA4 P 9700 4850 F 0 "C3" H 9710 4920 50 0000 L CNN F 1 "22pF" H 9710 4770 50 0000 L CNN F 2 "Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 9700 4850 50 0001 C CNN F 3 "" H 9700 4850 50 0001 C CNN 1 9700 4850 0 1 1 0 $EndComp Text GLabel 9900 5800 3 60 Output ~ 0 GND $Comp L C_Small C1 U 1 1 5939E123 P 3600 5650 F 0 "C1" H 3610 5720 50 0000 L CNN F 1 "100nF" H 3610 5570 50 0000 L CNN F 2 "Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 3600 5650 50 0001 C CNN F 3 "" H 3600 5650 50 0001 C CNN 1 3600 5650 -1 0 0 1 $EndComp Text GLabel 3600 6200 3 60 Output ~ 0 GND Text GLabel 3600 3500 1 60 Input ~ 0 VCC Text GLabel 5850 5650 2 60 Input ~ 0 OUT_DA Text GLabel 5850 4350 2 60 Output ~ 0 XTAL1 Text GLabel 5850 4450 2 60 Input ~ 0 XTAL2 Text GLabel 8900 5150 0 60 Input ~ 0 XTAL1 Text GLabel 8900 5250 0 60 Output ~ 0 XTAL2 Text GLabel 6350 5100 1 60 Input ~ 0 RESET $Comp L CONN_01X06 J4 U 1 1 593AA693 P 7350 5900 F 0 "J4" H 7350 6250 50 0000 C CNN F 1 "FTDI" V 7450 5900 50 0000 C CNN F 2 "Pin_Headers:Pin_Header_Angled_1x06_Pitch2.54mm" H 7350 5900 50 0001 C CNN F 3 "" H 7350 5900 50 0001 C CNN 1 7350 5900 0 1 1 0 $EndComp $Comp L R R4 U 1 1 593AAA90 P 6600 5350 F 0 "R4" V 6500 5350 50 0000 C CNN F 1 "10k" V 6600 5350 50 0000 C CNN F 2 "Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 6530 5350 50 0001 C CNN F 3 "" H 6600 5350 50 0001 C CNN 1 6600 5350 0 1 1 0 $EndComp Text GLabel 7900 5850 3 60 Output ~ 0 GND Text GLabel 7400 5100 1 60 Output ~ 0 VCC $Comp L C_Small C2 U 1 1 593AC0A1 P 6900 5200 F 0 "C2" H 6910 5270 50 0000 L CNN F 1 "100nF" V 6800 5100 50 0000 L CNN F 2 "Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 6900 5200 50 0001 C CNN F 3 "" H 6900 5200 50 0001 C CNN 1 6900 5200 0 1 1 0 $EndComp $Comp L CONN_02X03 J5 U 1 1 593B2B97 P 7650 4700 F 0 "J5" H 7650 4900 50 0000 C CNN F 1 "ICSP" H 7650 4500 50 0000 C CNN F 2 "Pin_Headers:Pin_Header_Straight_2x03_Pitch2.54mm" H 7650 3500 50 0001 C CNN F 3 "" H 7650 3500 50 0001 C CNN 1 7650 4700 1 0 0 -1 $EndComp Text GLabel 7900 4400 1 60 Output ~ 0 VCC Text GLabel 5850 5750 2 60 Input ~ 0 OUT_D0 Text GLabel 5850 5850 2 60 Input ~ 0 OUT_D1 Text GLabel 5850 5950 2 60 Input ~ 0 OUT_D2 Text GLabel 5850 3750 2 60 Input ~ 0 OUT_D3 Text GLabel 5850 3950 2 60 Input ~ 0 OUT_D4 Text GLabel 8200 4050 2 60 Input ~ 0 OUT_D5 Text GLabel 6850 4150 2 60 Input ~ 0 OUT_D6 NoConn ~ 5850 4600 NoConn ~ 5850 4700 NoConn ~ 5850 4800 NoConn ~ 5850 4900 NoConn ~ 5850 5000 NoConn ~ 5850 5100 NoConn ~ 3950 4350 Text GLabel 5850 3850 2 60 Output ~ 0 RCA_SYNC Text GLabel 5850 6050 2 60 Output ~ 0 RCA_VIDEO $Comp L Jumper_NO_Small JP1 U 1 1 593C2A0A P 3600 1750 F 0 "JP1" H 3600 1830 50 0000 C CNN F 1 "PullDown" H 3610 1690 50 0000 C CNN F 2 "Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm" H 3600 1750 50 0001 C CNN F 3 "" H 3600 1750 50 0001 C CNN 1 3600 1750 0 -1 -1 0 $EndComp $Comp L R R1 U 1 1 593C2BF9 P 3150 1150 F 0 "R1" V 3230 1150 50 0000 C CNN F 1 "1k" V 3150 1150 50 0000 C CNN F 2 "Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3080 1150 50 0001 C CNN F 3 "" H 3150 1150 50 0001 C CNN 1 3150 1150 0 1 1 0 $EndComp $Comp L R R2 U 1 1 593C2C43 P 3150 1550 F 0 "R2" V 3230 1550 50 0000 C CNN F 1 "330" V 3150 1550 50 0000 C CNN F 2 "Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3080 1550 50 0001 C CNN F 3 "" H 3150 1550 50 0001 C CNN 1 3150 1550 0 1 1 0 $EndComp $Comp L D D1 U 1 1 593C3A9B P 2600 1150 F 0 "D1" H 2600 1250 50 0000 C CNN F 1 "1N4848" H 2600 1050 50 0000 C CNN F 2 "Diodes_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 2600 1150 50 0001 C CNN F 3 "" H 2600 1150 50 0001 C CNN 1 2600 1150 -1 0 0 1 $EndComp $Comp L D D2 U 1 1 593C3C52 P 2600 1550 F 0 "D2" H 2600 1650 50 0000 C CNN F 1 "1N4848" H 2600 1450 50 0000 C CNN F 2 "Diodes_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 2600 1550 50 0001 C CNN F 3 "" H 2600 1550 50 0001 C CNN 1 2600 1550 -1 0 0 1 $EndComp Text GLabel 2250 1150 0 60 Input ~ 0 RCA_SYNC Text GLabel 2250 1550 0 60 Input ~ 0 RCA_VIDEO $Comp L R R3 U 1 1 593C6F39 P 3600 2100 F 0 "R3" V 3680 2100 50 0000 C CNN F 1 "75" V 3600 2100 50 0000 C CNN F 2 "Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3530 2100 50 0001 C CNN F 3 "" H 3600 2100 50 0001 C CNN 1 3600 2100 -1 0 0 1 $EndComp Text GLabel 3600 2500 3 60 Output ~ 0 GND Text GLabel 10600 5600 0 60 Output ~ 0 TX $Comp L Jumper_NO_Small JP2 U 1 1 593CEF5C P 7400 5500 F 0 "JP2" H 7400 5550 50 0000 C CNN F 1 "Power" H 7400 5450 50 0000 C CNN F 2 "Pin_Headers:Pin_Header_Angled_1x02_Pitch2.54mm" H 7400 5500 50 0001 C CNN F 3 "" H 7400 5500 50 0001 C CNN 1 7400 5500 0 1 1 0 $EndComp Text GLabel 6175 5100 1 60 Input ~ 0 TX Wire Wire Line 9100 4850 9600 4850 Wire Wire Line 9100 5550 9600 5550 Wire Wire Line 9900 5550 9800 5550 Wire Wire Line 9900 4850 9900 5800 Wire Wire Line 9900 4850 9800 4850 Wire Wire Line 9500 5050 9500 4850 Connection ~ 9500 4850 Wire Wire Line 9500 5350 9500 5550 Connection ~ 9500 5550 Wire Wire Line 9100 5250 9100 5550 Wire Wire Line 9100 5150 9100 4850 Connection ~ 9900 5550 Wire Wire Line 3600 5750 3600 6200 Wire Wire Line 3600 6050 3950 6050 Wire Wire Line 3950 5950 3600 5950 Connection ~ 3600 5950 Connection ~ 3600 6050 Wire Wire Line 3600 3500 3600 5550 Wire Wire Line 3950 3750 3600 3750 Connection ~ 3600 3750 Wire Wire Line 3600 4050 3950 4050 Connection ~ 3600 4050 Wire Wire Line 9100 5150 8900 5150 Wire Wire Line 9100 5250 8900 5250 Connection ~ 6350 5200 Wire Wire Line 5850 5450 7200 5450 Wire Wire Line 5850 5350 6450 5350 Wire Wire Line 6750 5350 7300 5350 Wire Wire Line 5850 5200 6800 5200 Wire Wire Line 7100 5200 7100 5700 Wire Wire Line 7200 5450 7200 5700 Wire Wire Line 7300 5350 7300 5700 Wire Wire Line 7900 4800 7900 5850 Wire Wire Line 7100 5200 7000 5200 Wire Wire Line 6350 5100 6350 5200 Wire Wire Line 7600 5700 7900 5700 Connection ~ 7900 5700 Wire Wire Line 7500 5700 7500 5600 Wire Wire Line 7500 5600 7900 5600 Wire Wire Line 7400 5700 7400 5600 Wire Wire Line 6600 4800 7400 4800 Wire Wire Line 6600 4800 6600 5200 Connection ~ 6600 5200 Wire Wire Line 6600 4700 7400 4700 Wire Wire Line 6600 4700 6600 4250 Wire Wire Line 6600 4250 5850 4250 Wire Wire Line 5850 4150 6850 4150 Wire Wire Line 6700 4150 6700 4600 Wire Wire Line 6700 4600 7400 4600 Wire Wire Line 7900 4700 8050 4700 Wire Wire Line 8050 4700 8050 4050 Wire Wire Line 5850 4050 8200 4050 Wire Wire Line 7900 4400 7900 4600 Connection ~ 7900 5600 Connection ~ 8050 4050 Connection ~ 6700 4150 Wire Wire Line 2750 1150 3000 1150 Wire Wire Line 2750 1550 3000 1550 Wire Wire Line 2250 1150 2450 1150 Wire Wire Line 2250 1550 2450 1550 Wire Wire Line 3300 1150 3600 1150 Wire Wire Line 3600 1150 3600 1650 Wire Wire Line 3600 1350 3900 1350 Wire Wire Line 3600 1550 3300 1550 Connection ~ 3600 1350 Connection ~ 3600 1550 Wire Wire Line 3600 1850 3600 1950 Wire Wire Line 3600 2250 3600 2500 Wire Wire Line 4050 1550 4050 2350 Wire Wire Line 4050 2350 3600 2350 Connection ~ 3600 2350 Wire Wire Line 7400 5100 7400 5400 Text GLabel 10600 5700 0 60 Input ~ 0 RX NoConn ~ 1600 5600 NoConn ~ 1600 5500 Wire Wire Line 2100 3800 2675 3800 Wire Wire Line 2675 3800 2675 6200 Wire Wire Line 2100 4800 2675 4800 Connection ~ 2675 4800 Wire Wire Line 2100 5000 2675 5000 Connection ~ 2675 5000 Wire Wire Line 2100 5200 2675 5200 Connection ~ 2675 5200 Wire Wire Line 2100 5300 2675 5300 Connection ~ 2675 5300 Wire Wire Line 2100 5700 2675 5700 Connection ~ 2675 5700 Wire Wire Line 2675 6000 1125 6000 Connection ~ 2675 6000 Wire Wire Line 1125 6000 1125 4700 Wire Wire Line 1125 4700 1600 4700 $Comp L RCA_PLUG J3 U 1 1 593A2D19 P 4050 1350 F 0 "J3" H 4060 1470 50 0000 C CNN F 1 "Video" V 4165 1350 50 0000 C CNN F 2 "w_conn_av:rca_yellow" H 4050 1350 50 0001 C CNN F 3 "" H 4050 1350 50 0001 C CNN 1 4050 1350 1 0 0 -1 $EndComp Wire Wire Line 6175 5100 6175 5350 Connection ~ 6175 5350 $EndSCHEMATC