+++ /dev/null
-EESchema Schematic File Version 4
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-Comment1 "License: Creative Commons Attribution Share-Alike (CC BY-SA)"
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-F 2 "" H 9350 2850 50 0001 L CNN
-F 3 "http://www.ti.com/lit/ds/symlink/max232.pdf" H 9300 4000 50 0001 C CNN
- 1 9300 3900
- 1 0 0 -1
-$EndComp
-Wire Bus Line
- 4550 5850 4400 5850
-Wire Wire Line
- 7900 3500 8200 3500
-Text Label 7900 3500 0 50 ~ 0
-BANKSEL
-Text Label 7900 3400 0 50 ~ 0
-~RTSA
-Text Label 7900 2700 0 50 ~ 0
-~CTSA
-Text Label 7900 4300 0 50 ~ 0
-TXA
-Text Label 7900 4400 0 50 ~ 0
-RXA
-Wire Wire Line
- 8350 3400 8350 4200
-Wire Wire Line
- 8350 4200 8500 4200
-Wire Wire Line
- 7900 3400 8350 3400
-Wire Wire Line
- 8300 2700 8300 4600
-Wire Wire Line
- 8300 4600 8500 4600
-Wire Wire Line
- 7900 2700 8300 2700
-$Comp
-L power:GND #PWR026
-U 1 1 5EE75D69
-P 9300 5100
-F 0 "#PWR026" H 9300 4850 50 0001 C CNN
-F 1 "GND" H 9305 4927 50 0000 C CNN
-F 2 "" H 9300 5100 50 0001 C CNN
-F 3 "" H 9300 5100 50 0001 C CNN
- 1 9300 5100
- 1 0 0 -1
-$EndComp
-$Comp
-L power:VCC #PWR025
-U 1 1 5EE7620F
-P 9300 2700
-F 0 "#PWR025" H 9300 2550 50 0001 C CNN
-F 1 "VCC" H 9317 2873 50 0000 C CNN
-F 2 "" H 9300 2700 50 0001 C CNN
-F 3 "" H 9300 2700 50 0001 C CNN
- 1 9300 2700
- 1 0 0 -1
-$EndComp
-$Comp
-L Device:C C12
-U 1 1 5EE7734D
-P 8500 3150
-F 0 "C12" H 8500 3250 50 0000 L CNN
-F 1 "0.1uF" H 8400 2950 50 0000 L CNN
-F 2 "" H 8538 3000 50 0001 C CNN
-F 3 "~" H 8500 3150 50 0001 C CNN
- 1 8500 3150
- 1 0 0 -1
-$EndComp
-$Comp
-L Device:C C13
-U 1 1 5EEBDB7E
-P 10100 3150
-F 0 "C13" H 9950 3250 50 0000 L CNN
-F 1 "0.1uF" H 9850 3050 50 0000 L CNN
-F 2 "" H 10138 3000 50 0001 C CNN
-F 3 "~" H 10100 3150 50 0001 C CNN
- 1 10100 3150
- -1 0 0 -1
-$EndComp
-$Comp
-L Device:C C14
-U 1 1 5EEBE0D7
-P 10300 3500
-F 0 "C14" V 10250 3600 50 0000 L CNN
-F 1 "0.1uF" V 10250 3200 50 0000 L CNN
-F 2 "" H 10338 3350 50 0001 C CNN
-F 3 "~" H 10300 3500 50 0001 C CNN
- 1 10300 3500
- 0 -1 1 0
-$EndComp
-Wire Wire Line
- 10150 3500 10100 3500
-Wire Wire Line
- 10100 3800 10150 3800
-$Comp
-L Device:C C15
-U 1 1 5EEC6839
-P 10300 3800
-F 0 "C15" V 10250 3900 50 0000 L CNN
-F 1 "0.1uF" V 10250 3500 50 0000 L CNN
-F 2 "" H 10338 3650 50 0001 C CNN
-F 3 "~" H 10300 3800 50 0001 C CNN
- 1 10300 3800
- 0 -1 1 0
-$EndComp
-$Comp
-L power:VCC #PWR029
-U 1 1 5EEEF5D1
-P 10650 3400
-F 0 "#PWR029" H 10650 3250 50 0001 C CNN
-F 1 "VCC" H 10667 3573 50 0000 C CNN
-F 2 "" H 10650 3400 50 0001 C CNN
-F 3 "" H 10650 3400 50 0001 C CNN
- 1 10650 3400
- 1 0 0 -1
-$EndComp
-Wire Wire Line
- 10650 3400 10650 3500
-Wire Wire Line
- 10650 3500 10450 3500
-$Comp
-L power:GND #PWR027
-U 1 1 5EEF812A
-P 10550 3850
-F 0 "#PWR027" H 10550 3600 50 0001 C CNN
-F 1 "GND" H 10555 3677 50 0000 C CNN
-F 2 "" H 10550 3850 50 0001 C CNN
-F 3 "" H 10550 3850 50 0001 C CNN
- 1 10550 3850
- 1 0 0 -1
-$EndComp
-Wire Wire Line
- 10450 3800 10550 3800
-Wire Wire Line
- 10550 3800 10550 3850
-Wire Wire Line
- 7900 4300 8250 4300
-Wire Wire Line
- 7900 4400 8500 4400
-Wire Wire Line
- 8250 4300 8250 4000
-Wire Wire Line
- 8250 4000 8500 4000
-Text Label 8400 4000 0 50 ~ 0
-TXA
-Text Label 8350 4600 0 50 ~ 0
-~CTSA
-Text Label 8350 4200 0 50 ~ 0
-~RTSA
-Text Label 8350 4400 0 50 ~ 0
-RXA
-$Comp
-L Connector:Conn_01x03_Male J1
-U 1 1 5F03FE41
-P 8550 4850
-F 0 "J1" H 8600 4700 50 0000 R CNN
-F 1 "SERB" H 8650 4600 50 0000 R CNN
-F 2 "" H 8550 4850 50 0001 C CNN
-F 3 "~" H 8550 4850 50 0001 C CNN
- 1 8550 4850
- -1 0 0 -1
-$EndComp
-Text Label 8000 4750 0 50 ~ 0
-RXDB
-Text Label 8000 4850 0 50 ~ 0
-TXDB
-Wire Wire Line
- 7900 4650 7900 4850
-Wire Wire Line
- 7900 4850 8350 4850
-Wire Wire Line
- 7900 4550 7950 4550
-Wire Wire Line
- 7950 4550 7950 4750
-Wire Wire Line
- 7950 4750 8350 4750
-$Comp
-L power:GND #PWR024
-U 1 1 5F09F89E
-P 8300 4950
-F 0 "#PWR024" H 8300 4700 50 0001 C CNN
-F 1 "GND" H 8305 4777 50 0000 C CNN
-F 2 "" H 8300 4950 50 0001 C CNN
-F 3 "" H 8300 4950 50 0001 C CNN
- 1 8300 4950
- 1 0 0 -1
-$EndComp
-$Comp
-L Connector:DB9_Male J2
-U 1 1 5F10B0BC
-P 10850 4600
-F 0 "J2" H 10800 5150 50 0000 L CNN
-F 1 "SERA" H 10750 4050 50 0000 L CNN
-F 2 "" H 10850 4600 50 0001 C CNN
-F 3 " ~" H 10850 4600 50 0001 C CNN
- 1 10850 4600
- 1 0 0 1
-$EndComp
-Wire Wire Line
- 10100 4000 10250 4000
-Wire Wire Line
- 10100 4400 10550 4400
-Wire Wire Line
- 10250 4000 10250 4600
-Wire Wire Line
- 10250 4600 10550 4600
-Wire Wire Line
- 10100 4200 10200 4200
-Wire Wire Line
- 10200 4200 10200 4500
-Wire Wire Line
- 10200 4500 10550 4500
-Wire Wire Line
- 10100 4600 10150 4600
-Wire Wire Line
- 10150 4600 10150 4700
-Wire Wire Line
- 10150 4700 10550 4700
-$Comp
-L power:GND #PWR028
-U 1 1 5F1878FB
-P 10550 5050
-F 0 "#PWR028" H 10550 4800 50 0001 C CNN
-F 1 "GND" H 10555 4877 50 0000 C CNN
-F 2 "" H 10550 5050 50 0001 C CNN
-F 3 "" H 10550 5050 50 0001 C CNN
- 1 10550 5050
- 1 0 0 -1
-$EndComp
-Wire Wire Line
- 10550 5000 10550 5050
-NoConn ~ 10550 4200
-NoConn ~ 10550 4300
-NoConn ~ 10550 4800
-NoConn ~ 10550 4900
-Text Label 10350 4400 0 50 ~ 0
-SRTX
-Text Label 10350 4500 0 50 ~ 0
-SRTS
-Text Label 10350 4600 0 50 ~ 0
-STXA
-Text Label 10350 4700 0 50 ~ 0
-SCTS
-Wire Bus Line
- 3000 5850 4550 5850
-Connection ~ 6550 5050
-Connection ~ 6550 5600
-Text Label 6600 5250 0 50 ~ 0
-UCLK
-Wire Wire Line
- 6550 5250 6800 5250
-Connection ~ 7350 5600
-Wire Wire Line
- 1300 4050 1000 4050
-Text Label 1050 4050 0 50 ~ 0
-~WAIT
-$Comp
-L Device:R R3
-U 1 1 5F385448
-P 850 4050
-F 0 "R3" V 950 4050 50 0000 L CNN
-F 1 "4.7k" V 850 3950 50 0000 L CNN
-F 2 "" V 780 4050 50 0001 C CNN
-F 3 "~" H 850 4050 50 0001 C CNN
- 1 850 4050
- 0 -1 -1 0
-$EndComp
-Text Label 1150 3150 0 50 ~ 0
-CLK
-Text Label 1050 3550 0 50 ~ 0
-~INT
-Wire Wire Line
- 1300 3550 1000 3550
-$Comp
-L power:VCC #PWR01
-U 1 1 5F3DA2B2
-P 700 3350
-F 0 "#PWR01" H 700 3200 50 0001 C CNN
-F 1 "VCC" H 700 3500 50 0000 C CNN
-F 2 "" H 700 3350 50 0001 C CNN
-F 3 "" H 700 3350 50 0001 C CNN
- 1 700 3350
- 1 0 0 -1
-$EndComp
-$Comp
-L Device:R R2
-U 1 1 5F3D9F65
-P 850 3550
-F 0 "R2" V 950 3550 50 0000 L CNN
-F 1 "4.7k" V 850 3450 50 0000 L CNN
-F 2 "" V 780 3550 50 0001 C CNN
-F 3 "~" H 850 3550 50 0001 C CNN
- 1 850 3550
- 0 -1 1 0
-$EndComp
-Wire Wire Line
- 700 3350 700 3450
-Connection ~ 700 3550
-Wire Wire Line
- 700 3550 700 4050
-$Comp
-L Device:C C2
-U 1 1 5F442E26
-P 1850 7150
-F 0 "C2" H 1900 7250 50 0000 L CNN
-F 1 "0.1uF" H 1900 7050 50 0000 L CNN
-F 2 "" H 1888 7000 50 0001 C CNN
-F 3 "~" H 1850 7150 50 0001 C CNN
- 1 1850 7150
- 1 0 0 -1
-$EndComp
-$Comp
-L Device:C C3
-U 1 1 5F444327
-P 2150 7150
-F 0 "C3" H 2200 7250 50 0000 L CNN
-F 1 "0.1uF" H 2200 7050 50 0000 L CNN
-F 2 "" H 2188 7000 50 0001 C CNN
-F 3 "~" H 2150 7150 50 0001 C CNN
- 1 2150 7150
- 1 0 0 -1
-$EndComp
-$Comp
-L Device:C C4
-U 1 1 5F444547
-P 2450 7150
-F 0 "C4" H 2500 7250 50 0000 L CNN
-F 1 "0.1uF" H 2500 7050 50 0000 L CNN
-F 2 "" H 2488 7000 50 0001 C CNN
-F 3 "~" H 2450 7150 50 0001 C CNN
- 1 2450 7150
- 1 0 0 -1
-$EndComp
-$Comp
-L Device:C C6
-U 1 1 5F444841
-P 2750 7150
-F 0 "C6" H 2800 7250 50 0000 L CNN
-F 1 "0.1uF" H 2800 7050 50 0000 L CNN
-F 2 "" H 2788 7000 50 0001 C CNN
-F 3 "~" H 2750 7150 50 0001 C CNN
- 1 2750 7150
- 1 0 0 -1
-$EndComp
-$Comp
-L Device:C C7
-U 1 1 5F444B0C
-P 3050 7150
-F 0 "C7" H 3100 7250 50 0000 L CNN
-F 1 "0.1uF" H 3100 7050 50 0000 L CNN
-F 2 "" H 3088 7000 50 0001 C CNN
-F 3 "~" H 3050 7150 50 0001 C CNN
- 1 3050 7150
- 1 0 0 -1
-$EndComp
-$Comp
-L Device:C C8
-U 1 1 5F444DC1
-P 3350 7150
-F 0 "C8" H 3400 7250 50 0000 L CNN
-F 1 "0.1uF" H 3400 7050 50 0000 L CNN
-F 2 "" H 3388 7000 50 0001 C CNN
-F 3 "~" H 3350 7150 50 0001 C CNN
- 1 3350 7150
- 1 0 0 -1
-$EndComp
-$Comp
-L power:GND #PWR010
-U 1 1 5F4451AA
-P 2600 7300
-F 0 "#PWR010" H 2600 7050 50 0001 C CNN
-F 1 "GND" H 2605 7127 50 0000 C CNN
-F 2 "" H 2600 7300 50 0001 C CNN
-F 3 "" H 2600 7300 50 0001 C CNN
- 1 2600 7300
- 1 0 0 -1
-$EndComp
-$Comp
-L power:VCC #PWR09
-U 1 1 5F4467BC
-P 2600 7000
-F 0 "#PWR09" H 2600 6850 50 0001 C CNN
-F 1 "VCC" H 2600 7150 50 0000 C CNN
-F 2 "" H 2600 7000 50 0001 C CNN
-F 3 "" H 2600 7000 50 0001 C CNN
- 1 2600 7000
- 1 0 0 -1
-$EndComp
-Wire Wire Line
- 1850 7000 2150 7000
-Connection ~ 2150 7000
-Wire Wire Line
- 2150 7000 2450 7000
-Connection ~ 2450 7000
-Wire Wire Line
- 2450 7000 2600 7000
-Connection ~ 2600 7000
-Wire Wire Line
- 2600 7000 2750 7000
-Connection ~ 2750 7000
-Wire Wire Line
- 2750 7000 3050 7000
-Connection ~ 3050 7000
-Wire Wire Line
- 3050 7000 3350 7000
-Wire Wire Line
- 1850 7300 2150 7300
-Connection ~ 2150 7300
-Wire Wire Line
- 2150 7300 2450 7300
-Connection ~ 2450 7300
-Wire Wire Line
- 2450 7300 2600 7300
-Connection ~ 2600 7300
-Wire Wire Line
- 2600 7300 2750 7300
-Connection ~ 2750 7300
-Wire Wire Line
- 2750 7300 3050 7300
-Connection ~ 3050 7300
-Wire Wire Line
- 3050 7300 3350 7300
-$Comp
-L Device:R R1
-U 1 1 5F463EA2
-P 850 3450
-F 0 "R1" V 950 3450 50 0000 L CNN
-F 1 "4.7k" V 850 3350 50 0000 L CNN
-F 2 "" V 780 3450 50 0001 C CNN
-F 3 "~" H 850 3450 50 0001 C CNN
- 1 850 3450
- 0 -1 -1 0
-$EndComp
-Connection ~ 700 3450
-Wire Wire Line
- 700 3450 700 3550
-Wire Wire Line
- 1000 3450 1300 3450
-Text Label 1050 3450 0 50 ~ 0
-~NMI
-$Comp
-L 74xx:74LS05 U4
-U 2 1 5F4A99C1
-P 7300 6200
-F 0 "U4" H 7300 6050 50 0000 C CNN
-F 1 "74LS05" H 7400 6350 50 0000 C CNN
-F 2 "" H 7300 6200 50 0001 C CNN
-F 3 "http://www.ti.com/lit/gpn/sn74LS05" H 7300 6200 50 0001 C CNN
- 2 7300 6200
- -1 0 0 1
-$EndComp
-$Comp
-L Diode:1N4148 D1
-U 1 1 5F4AD646
-P 8050 6200
-F 0 "D1" H 8050 5984 50 0000 C CNN
-F 1 "1N4148" H 8050 6075 50 0000 C CNN
-F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 8050 6025 50 0001 C CNN
-F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 8050 6200 50 0001 C CNN
- 1 8050 6200
- -1 0 0 1
-$EndComp
-$Comp
-L Device:R R8
-U 1 1 5F4AE323
-P 7750 6050
-F 0 "R8" H 7680 6004 50 0000 R CNN
-F 1 "4k7" H 7680 6095 50 0000 R CNN
-F 2 "" V 7680 6050 50 0001 C CNN
-F 3 "~" H 7750 6050 50 0001 C CNN
- 1 7750 6050
- 1 0 0 1
-$EndComp
-$Comp
-L power:VCC #PWR023
-U 1 1 5F4B4193
-P 7750 5900
-F 0 "#PWR023" H 7750 5750 50 0001 C CNN
-F 1 "VCC" H 7767 6073 50 0000 C CNN
-F 2 "" H 7750 5900 50 0001 C CNN
-F 3 "" H 7750 5900 50 0001 C CNN
- 1 7750 5900
- 1 0 0 -1
-$EndComp
-Wire Wire Line
- 7900 5250 7900 6200
-Connection ~ 7900 6200
-Wire Wire Line
- 8200 6200 8500 6200
-Text Label 8200 6200 0 50 ~ 0
-UARTEN
-Wire Wire Line
- 7600 6200 7750 6200
-Connection ~ 7750 6200
-Wire Wire Line
- 7750 6200 7900 6200
-Wire Wire Line
- 7000 6200 850 6200
-Wire Wire Line
- 850 6200 850 4250
-Wire Wire Line
- 850 4250 1000 4250
-Wire Wire Line
- 1000 4250 1000 4050
-Connection ~ 1000 4050
-Wire Wire Line
- 4400 1200 4700 1200
-Text Label 4400 1200 0 50 ~ 0
-UARTEN
-Wire Wire Line
- 7900 5150 8050 5150
-Text Label 7900 5150 0 50 ~ 0
-~INT
-Wire Wire Line
- 8300 4950 8350 4950
-Text Notes 3950 2300 0 50 ~ 0
-GAL16V8: glue.pld
-$Comp
-L power:VCC #PWR04
-U 1 1 5F6A583C
-P 1300 5150
-F 0 "#PWR04" H 1300 5000 50 0001 C CNN
-F 1 "VCC" H 1317 5323 50 0000 C CNN
-F 2 "" H 1300 5150 50 0001 C CNN
-F 3 "" H 1300 5150 50 0001 C CNN
- 1 1300 5150
- 1 0 0 -1
-$EndComp
-Wire Wire Line
- 3300 1600 3100 1600
-Text Label 3200 1600 0 50 ~ 0
-~M1
-Wire Wire Line
- 3300 1900 3100 1900
-Text Label 3100 1900 0 50 ~ 0
-~RFSH
-Wire Wire Line
- 4400 1700 4700 1700
-Text Label 4400 1700 0 50 ~ 0
-~IACK
-Wire Wire Line
- 6800 4700 6600 4700
-Text Label 6600 4700 0 50 ~ 0
-~IACK
-$Comp
-L 74xx:74HC14 U1
-U 6 1 5F7B3414
-P 850 2400
-F 0 "U1" V 650 2400 50 0000 L CNN
-F 1 "74HC14" H 850 2250 50 0000 L CNN
-F 2 "" H 850 2400 50 0001 C CNN
-F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 850 2400 50 0001 C CNN
- 6 850 2400
- 0 1 1 0
-$EndComp
-Wire Wire Line
- 850 2700 850 3150
-Wire Wire Line
- 850 3150 1300 3150
-Wire Wire Line
- 850 2100 850 1850
-Text Label 850 2050 1 50 ~ 0
-UCLK
-Wire Wire Line
- 1300 1650 1350 1650
-$Comp
-L power:VCC #PWR03
-U 1 1 5F97FBA6
-P 1300 1650
-F 0 "#PWR03" H 1300 1500 50 0001 C CNN
-F 1 "VCC" H 1300 1800 50 0000 C CNN
-F 2 "" H 1300 1650 50 0001 C CNN
-F 3 "" H 1300 1650 50 0001 C CNN
- 1 1300 1650
- 1 0 0 -1
-$EndComp
-Wire Wire Line
- 750 1350 750 1250
-$Comp
-L power:GND #PWR02
-U 1 1 5F96EC3C
-P 750 1350
-F 0 "#PWR02" H 750 1100 50 0001 C CNN
-F 1 "GND" H 755 1177 50 0000 C CNN
-F 2 "" H 750 1350 50 0001 C CNN
-F 3 "" H 750 1350 50 0001 C CNN
- 1 750 1350
- 1 0 0 -1
-$EndComp
-Connection ~ 1200 1250
-Wire Wire Line
- 1150 1250 1200 1250
-$Comp
-L Switch:SW_Push SW1
-U 1 1 5F933400
-P 950 1250
-F 0 "SW1" H 950 1535 50 0000 C CNN
-F 1 "RESET" H 950 1444 50 0000 C CNN
-F 2 "" H 950 1450 50 0001 C CNN
-F 3 "~" H 950 1450 50 0001 C CNN
- 1 950 1250
- 1 0 0 -1
-$EndComp
-Connection ~ 1850 1050
-Wire Wire Line
- 1500 1050 1850 1050
-Wire Wire Line
- 1500 950 1500 1050
-Wire Wire Line
- 1200 950 1500 950
-Wire Wire Line
- 1200 1250 1350 1250
-$Comp
-L Device:R R5
-U 1 1 5F901EA0
-P 1200 1100
-F 0 "R5" H 1270 1146 50 0000 L CNN
-F 1 "1M" V 1200 1050 50 0000 L CNN
-F 2 "" V 1130 1100 50 0001 C CNN
-F 3 "~" H 1200 1100 50 0001 C CNN
- 1 1200 1100
- 1 0 0 -1
-$EndComp
-NoConn ~ 1350 1450
-$Comp
-L power:VCC #PWR011
-U 1 1 5F8CF8A4
-P 2700 1150
-F 0 "#PWR011" H 2700 1000 50 0001 C CNN
-F 1 "VCC" H 2717 1323 50 0000 C CNN
-F 2 "" H 2700 1150 50 0001 C CNN
-F 3 "" H 2700 1150 50 0001 C CNN
- 1 2700 1150
- 1 0 0 -1
-$EndComp
-Text Label 2350 1250 0 50 ~ 0
-RST
-Wire Wire Line
- 2350 1250 2550 1250
-Wire Wire Line
- 2700 1850 1850 1850
-Wire Wire Line
- 2350 1650 2700 1650
-Connection ~ 2700 1450
-Wire Wire Line
- 2700 1450 2700 1650
-$Comp
-L Device:C_Small C5
-U 1 1 5F880397
-P 2700 1750
-F 0 "C5" H 2609 1704 50 0000 R CNN
-F 1 "0.1uF" H 2609 1795 50 0000 R CNN
-F 2 "" H 2700 1750 50 0001 C CNN
-F 3 "~" H 2700 1750 50 0001 C CNN
- 1 2700 1750
- 1 0 0 1
-$EndComp
-Wire Wire Line
- 2350 1450 2700 1450
-$Comp
-L Device:R R6
-U 1 1 5F8611FE
-P 2700 1300
-F 0 "R6" H 2750 1350 50 0000 L CNN
-F 1 "9.1k" V 2700 1200 50 0000 L CNN
-F 2 "" V 2630 1300 50 0001 C CNN
-F 3 "~" H 2700 1300 50 0001 C CNN
- 1 2700 1300
- 1 0 0 -1
-$EndComp
-$Comp
-L power:VCC #PWR05
-U 1 1 5F860836
-P 1850 1050
-F 0 "#PWR05" H 1850 900 50 0001 C CNN
-F 1 "VCC" H 1867 1223 50 0000 C CNN
-F 2 "" H 1850 1050 50 0001 C CNN
-F 3 "" H 1850 1050 50 0001 C CNN
- 1 1850 1050
- 1 0 0 -1
-$EndComp
-$Comp
-L power:GND #PWR06
-U 1 1 5F860553
-P 1850 1850
-F 0 "#PWR06" H 1850 1600 50 0001 C CNN
-F 1 "GND" H 1855 1677 50 0000 C CNN
-F 2 "" H 1850 1850 50 0001 C CNN
-F 3 "" H 1850 1850 50 0001 C CNN
- 1 1850 1850
- 1 0 0 -1
-$EndComp
-$Comp
-L Timer:LM555 U2
-U 1 1 5F85DCB5
-P 1850 1450
-F 0 "U2" H 2000 1800 50 0000 C CNN
-F 1 "LM555" H 1850 1450 50 0000 C CNN
-F 2 "" H 1850 1450 50 0001 C CNN
-F 3 "http://www.ti.com/lit/ds/symlink/lm555.pdf" H 1850 1450 50 0001 C CNN
- 1 1850 1450
- 1 0 0 -1
-$EndComp
-$Comp
-L 74xx:74LS05 U4
-U 1 1 5F9CB042
-P 2450 800
-F 0 "U4" H 2450 650 50 0000 C CNN
-F 1 "74LS05" H 2550 950 50 0000 C CNN
-F 2 "" H 2450 800 50 0001 C CNN
-F 3 "http://www.ti.com/lit/gpn/sn74LS05" H 2450 800 50 0001 C CNN
- 1 2450 800
- 1 0 0 -1
-$EndComp
-Wire Wire Line
- 2150 800 2150 1050
-Wire Wire Line
- 2150 1050 2550 1050
-Wire Wire Line
- 2550 1050 2550 1250
-Text Label 2850 800 0 50 ~ 0
-~RST
-$Comp
-L Device:R R4
-U 1 1 5FA0761C
-P 1050 2700
-F 0 "R4" H 1120 2746 50 0000 L CNN
-F 1 "4.7k" V 1050 2600 50 0000 L CNN
-F 2 "" V 980 2700 50 0001 C CNN
-F 3 "~" H 1050 2700 50 0001 C CNN
- 1 1050 2700
- 1 0 0 -1
-$EndComp
-Text Notes 1350 700 0 50 ~ 0
-Power-on reset
-Wire Wire Line
- 2750 800 3000 800
-Wire Wire Line
- 1050 2850 1300 2850
-Wire Wire Line
- 1050 2550 2000 2550
-Connection ~ 2000 2550
-Connection ~ 2700 1650
-Connection ~ 1850 1850
-$Comp
-L Device:C_Small C1
-U 1 1 5FC80F1C
-P 1200 1700
-F 0 "C1" H 1109 1654 50 0000 R CNN
-F 1 "0.1uF" H 1109 1745 50 0000 R CNN
-F 2 "" H 1200 1700 50 0001 C CNN
-F 3 "~" H 1200 1700 50 0001 C CNN
- 1 1200 1700
- 1 0 0 1
-$EndComp
-Wire Wire Line
- 1200 1800 1200 1850
-Wire Wire Line
- 1200 1850 1850 1850
-Wire Wire Line
- 1200 1600 1200 1250
-NoConn ~ 1300 5250
-NoConn ~ 1300 4150
-Wire Wire Line
- 1300 3850 1100 3850
-Text Label 1200 3850 0 50 ~ 0
-~M1
-Wire Wire Line
- 1300 3950 1100 3950
-Text Label 1100 3950 0 50 ~ 0
-~RFSH
-Connection ~ 4700 2600
-Wire Bus Line
- 4600 2600 4700 2600
-Wire Bus Line
- 4700 2600 6350 2600
-Wire Bus Line
- 3150 2600 4700 2600
-Connection ~ 3000 2600
-Wire Wire Line
- 3300 2000 3100 2000
-Wire Wire Line
- 3300 2100 3100 2100
-Text Label 3200 2000 0 50 ~ 0
-~RD
-Text Label 3200 2100 0 50 ~ 0
-~WR
-$Comp
-L 74xx:74HC14 U1
-U 5 1 5FEF66B9
-P 5600 1300
-F 0 "U1" H 5550 1450 50 0000 L CNN
-F 1 "74HC14" H 5550 1150 50 0000 L CNN
-F 2 "" H 5600 1300 50 0001 C CNN
-F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 5600 1300 50 0001 C CNN
- 5 5600 1300
- 1 0 0 -1
-$EndComp
-$Comp
-L Device:C_Small C9
-U 1 1 5FEF828C
-P 5100 1100
-F 0 "C9" H 5008 1054 50 0000 R CNN
-F 1 "0.1uF" H 5008 1145 50 0000 R CNN
-F 2 "" H 5100 1100 50 0001 C CNN
-F 3 "~" H 5100 1100 50 0001 C CNN
- 1 5100 1100
- -1 0 0 1
-$EndComp
-$Comp
-L Device:R R7
-U 1 1 5FF0FBDF
-P 4850 1300
-F 0 "R7" V 4750 1250 50 0000 L CNN
-F 1 "120R" V 4850 1200 50 0000 L CNN
-F 2 "" V 4780 1300 50 0001 C CNN
-F 3 "~" H 4850 1300 50 0001 C CNN
- 1 4850 1300
- 0 1 1 0
-$EndComp
-$Comp
-L power:VCC #PWR018
-U 1 1 5FF26567
-P 5100 1000
-F 0 "#PWR018" H 5100 850 50 0001 C CNN
-F 1 "VCC" H 5117 1173 50 0000 C CNN
-F 2 "" H 5100 1000 50 0001 C CNN
-F 3 "" H 5100 1000 50 0001 C CNN
- 1 5100 1000
- 1 0 0 -1
-$EndComp
-$Comp
-L 74xx:74HC14 U1
-U 4 1 5FF485F0
-P 6200 1300
-F 0 "U1" H 6150 1450 50 0000 L CNN
-F 1 "74HC14" H 6150 1150 50 0000 L CNN
-F 2 "" H 6200 1300 50 0001 C CNN
-F 3 "http://www.ti.com/lit/gpn/sn74HC14" H 6200 1300 50 0001 C CNN
- 4 6200 1300
- 1 0 0 -1
-$EndComp
-Wire Wire Line
- 6500 1300 6800 1300
-Wire Wire Line
- 5000 1300 5100 1300
-Wire Wire Line
- 5100 1200 5100 1300
-Wire Bus Line
- 6350 2600 6350 3200
-Wire Bus Line
- 3000 1100 3000 2600
-Wire Bus Line
- 6400 3400 6400 4400
-Wire Bus Line
- 4550 3600 4550 5850
-Wire Bus Line
- 3000 4650 3000 5850
-Wire Bus Line
- 3150 2600 3150 4800
-Wire Bus Line
- 4700 2600 4700 4600
-Wire Bus Line
- 3000 2600 3000 4250
-Connection ~ 5100 1300
-Wire Wire Line
- 5100 1300 5300 1300
-Text Notes 5350 950 0 50 ~ 0
-Delay the UART ~CS~ for a few ns to bring the\ntiming between R/~W~ and ~CS~ within spec\n(this might have been a red herring and not necessary)
-$EndSCHEMATC
projects / z80comp2 / blobdiff