1 EESchema Schematic File Version 4
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415 F 1 "mc68681" V 7500 3900 50 0000 C CNN
416 F 2 "" H 8050 3350 50 0001 C CNN
417 F 3 "" H 8050 3350 50 0001 C CNN
422 L z80comp2:sram_um61512ak U4
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633 F 0 "#PWR012" H 4550 5150 50 0001 C CNN
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635 F 2 "" H 4550 5300 50 0001 C CNN
636 F 3 "" H 4550 5300 50 0001 C CNN
648 F 0 "#PWR014" H 5600 5350 50 0001 C CNN
649 F 1 "GND" H 5605 5427 50 0000 C CNN
650 F 2 "" H 5600 5600 50 0001 C CNN
651 F 3 "" H 5600 5600 50 0001 C CNN
659 F 0 "#PWR016" H 7500 5350 50 0001 C CNN
660 F 1 "GND" H 7505 5427 50 0000 C CNN
661 F 2 "" H 7500 5600 50 0001 C CNN
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670 F 0 "#PWR015" H 7500 2250 50 0001 C CNN
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705 F 3 "" H 3700 1650 50 0001 C CNN
713 F 0 "#PWR08" H 3750 700 50 0001 C CNN
714 F 1 "VCC" H 3767 1023 50 0000 C CNN
715 F 2 "" H 3750 850 50 0001 C CNN
716 F 3 "" H 3750 850 50 0001 C CNN
724 F 0 "#PWR09" H 3750 2000 50 0001 C CNN
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829 L Device:Crystal_Small Y1
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835 F 3 "~" H 6700 5150 50 0001 C CNN
845 F 0 "C8" H 6900 5400 50 0000 R CNN
846 F 1 "5pF" H 6900 5500 50 0000 R CNN
847 F 2 "" H 6700 5400 50 0001 C CNN
848 F 3 "~" H 6700 5400 50 0001 C CNN
856 F 0 "C7" H 6700 5200 50 0000 R CNN
857 F 1 "15pF" H 6700 5300 50 0000 R CNN
858 F 2 "" H 6500 5200 50 0001 C CNN
859 F 3 "~" H 6500 5200 50 0001 C CNN
869 Connection ~ 6700 5250
879 L Interface_UART:MAX232 U7
882 F 0 "U7" H 9650 2850 50 0000 C CNN
883 F 1 "MAX232" H 9450 4150 50 0000 C CNN
884 F 2 "" H 9500 2850 50 0001 L CNN
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930 F 0 "#PWR019" H 9450 2550 50 0001 C CNN
931 F 1 "VCC" H 9467 2873 50 0000 C CNN
932 F 2 "" H 9450 2700 50 0001 C CNN
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944 F 3 "~" H 8650 3150 50 0001 C CNN
952 F 0 "C10" H 10100 3250 50 0000 L CNN
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955 F 3 "~" H 10250 3150 50 0001 C CNN
963 F 0 "C11" V 10400 3600 50 0000 L CNN
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980 F 2 "" H 10488 3650 50 0001 C CNN
981 F 3 "~" H 10450 3800 50 0001 C CNN
989 F 0 "#PWR023" H 10800 3250 50 0001 C CNN
990 F 1 "VCC" H 10817 3573 50 0000 C CNN
991 F 2 "" H 10800 3400 50 0001 C CNN
992 F 3 "" H 10800 3400 50 0001 C CNN
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1004 F 0 "#PWR021" H 10700 3600 50 0001 C CNN
1005 F 1 "GND" H 10705 3677 50 0000 C CNN
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1032 L Connector:Conn_01x03_Male J1
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1038 F 3 "~" H 8700 4850 50 0001 C CNN
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1060 F 0 "#PWR018" H 8450 4700 50 0001 C CNN
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1063 F 3 "" H 8450 4950 50 0001 C CNN
1068 L Connector:DB9_Male J2
1071 F 0 "J2" H 10950 5150 50 0000 L CNN
1072 F 1 "SERA" H 10900 4050 50 0000 L CNN
1073 F 2 "" H 11000 4600 50 0001 C CNN
1074 F 3 " ~" H 11000 4600 50 0001 C CNN
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1102 F 0 "#PWR022" H 10700 4800 50 0001 C CNN
1103 F 1 "GND" H 10705 4877 50 0000 C CNN
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1172 F 2 "" V 680 3550 50 0001 C CNN
1173 F 3 "~" H 750 3550 50 0001 C CNN
1179 Connection ~ 600 3550
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1189 F 3 "~" H 1850 7150 50 0001 C CNN
1197 F 0 "C2" H 2200 7250 50 0000 L CNN
1198 F 1 "0.1uF" H 2200 7050 50 0000 L CNN
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1200 F 3 "~" H 2150 7150 50 0001 C CNN
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1244 F 3 "~" H 3350 7150 50 0001 C CNN
1252 F 0 "#PWR06" H 2600 7050 50 0001 C CNN
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1254 F 2 "" H 2600 7300 50 0001 C CNN
1255 F 3 "" H 2600 7300 50 0001 C CNN
1263 F 0 "#PWR05" H 2600 6850 50 0001 C CNN
1264 F 1 "VCC" H 2600 7150 50 0000 C CNN
1265 F 2 "" H 2600 7000 50 0001 C CNN
1266 F 3 "" H 2600 7000 50 0001 C CNN
1272 Connection ~ 2150 7000
1275 Connection ~ 2450 7000
1278 Connection ~ 2600 7000
1281 Connection ~ 2750 7000
1284 Connection ~ 3050 7000
1289 Connection ~ 2150 7300
1292 Connection ~ 2450 7300
1295 Connection ~ 2600 7300
1298 Connection ~ 2750 7300
1301 Connection ~ 3050 7300
1308 F 0 "R1" V 850 3450 50 0000 L CNN
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1320 Text Label 950 3450 0 50 ~ 0
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1329 F 3 "http://www.ti.com/lit/gpn/sn74LS05" H 7450 6200 50 0001 C CNN
1337 F 0 "D1" H 8200 5984 50 0000 C CNN
1338 F 1 "1N4148" H 8200 6075 50 0000 C CNN
1339 F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 8200 6025 50 0001 C CNN
1340 F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 8200 6200 50 0001 C CNN
1348 F 0 "R4" H 7830 6004 50 0000 R CNN
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1359 F 0 "#PWR017" H 7900 5750 50 0001 C CNN
1360 F 1 "VCC" H 7917 6073 50 0000 C CNN
1361 F 2 "" H 7900 5900 50 0001 C CNN
1362 F 3 "" H 7900 5900 50 0001 C CNN
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1464 F 0 "#PWR024" H 650 1100 50 0001 C CNN
1465 F 1 "GND" H 655 1177 50 0000 C CNN
1466 F 2 "" H 650 1350 50 0001 C CNN
1467 F 3 "" H 650 1350 50 0001 C CNN
1471 Connection ~ 1100 1250
1475 L Switch:SW_Push SW1
1478 F 0 "SW1" H 850 1535 50 0000 C CNN
1479 F 1 "RESET" H 850 1444 50 0000 C CNN
1480 F 2 "" H 850 1450 50 0001 C CNN
1481 F 3 "~" H 850 1450 50 0001 C CNN
1485 Connection ~ 1750 1050
1498 F 0 "R6" H 1170 1146 50 0000 L CNN
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1500 F 2 "" V 1030 1100 50 0001 C CNN
1501 F 3 "~" H 1100 1100 50 0001 C CNN
1510 F 0 "#PWR028" H 2600 1000 50 0001 C CNN
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1529 L Device:C_Small C13
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1535 F 3 "~" H 2600 1750 50 0001 C CNN
1545 F 0 "R7" H 2650 1350 50 0000 L CNN
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1556 F 0 "#PWR026" H 1750 900 50 0001 C CNN
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1567 F 0 "#PWR027" H 1750 1600 50 0001 C CNN
1568 F 1 "GND" H 1755 1677 50 0000 C CNN
1569 F 2 "" H 1750 1850 50 0001 C CNN
1570 F 3 "" H 1750 1850 50 0001 C CNN
1578 F 0 "U9" H 1900 1800 50 0000 C CNN
1579 F 1 "LM555" H 1750 1450 50 0000 C CNN
1580 F 2 "" H 1750 1450 50 0001 C CNN
1581 F 3 "http://www.ti.com/lit/ds/symlink/lm555.pdf" H 1750 1450 50 0001 C CNN
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1590 F 1 "74LS05" H 2450 950 50 0000 C CNN
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1632 F 2 "" H 1100 1700 50 0001 C CNN
1633 F 3 "~" H 1100 1700 50 0001 C CNN