Apple-2-HW/unified_retro_keyboard
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unified_retro_keyboard/hardware/interface-osi/special_keys.sch

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EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 3 3
Title "OSI Interface"
Date "2020-04-23"
Rev ""
Comp "OSIWeb.org"
Comment1 "Reset and ShiftLock circuits"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Text HLabel 1800 4250 0 50 UnSpc ~ 0
ShiftLock_1
Text HLabel 1750 5350 0 50 UnSpc ~ 0
ShiftLock_2
Text HLabel 8000 5350 2 50 Output ~ 0
ShiftLock_LED+
Text HLabel 8000 5550 2 50 Output ~ 0
ShiftLock_LED-
Text HLabel 1750 1400 0 50 UnSpc ~ 0
Break_1
Text HLabel 1750 1800 0 50 UnSpc ~ 0
Break_2
Text HLabel 9700 2550 2 50 Output ~ 0
~RESET
$Comp
L 74xx:74LS14 U10
U 1 1 60F8E3EB
P 5600 4500
F 0 "U10" H 5600 4817 50 0000 C CNN
F 1 "74LS14" H 5600 4726 50 0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 5600 4500 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 5600 4500 50 0001 C CNN
1 5600 4500
1 0 0 -1
$EndComp
$Comp
L 74xx:74LS14 U10
U 2 1 60F90788
P 5600 5350
F 0 "U10" H 5600 5667 50 0000 C CNN
F 1 "74LS14" H 5600 5576 50 0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 5600 5350 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 5600 5350 50 0001 C CNN
2 5600 5350
1 0 0 -1
$EndComp
$Comp
L 74xx:74LS14 U10
U 3 1 60F91229
P 3650 4900
F 0 "U10" H 3650 5217 50 0000 C CNN
F 1 "74LS14" H 3650 5126 50 0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 3650 4900 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 3650 4900 50 0001 C CNN
3 3650 4900
1 0 0 -1
$EndComp
$Comp
L 74xx:74LS14 U10
U 4 1 60F9322B
P 4150 1800
F 0 "U10" H 4150 2117 50 0000 C CNN
F 1 "74LS14" H 4150 2026 50 0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 4150 1800 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 4150 1800 50 0001 C CNN
4 4150 1800
1 0 0 -1
$EndComp
$Comp
L 74xx:74LS14 U10
U 6 1 60F956F9
P 8500 2550
F 0 "U10" H 8500 2867 50 0000 C CNN
F 1 "74LS14" H 8500 2776 50 0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 8500 2550 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 8500 2550 50 0001 C CNN
6 8500 2550
1 0 0 -1
$EndComp
$Comp
L Device:R_US R16
U 1 1 60F9ED41
P 5000 5350
F 0 "R16" V 5100 5350 50 0000 C CNN
F 1 "220k" V 4900 5350 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 5040 5340 50 0001 C CNN
F 3 "~" H 5000 5350 50 0001 C CNN
1 5000 5350
0 -1 -1 0
$EndComp
$Comp
L Device:R_US R15
U 1 1 60FA15B9
P 4900 4700
F 0 "R15" V 5000 4700 50 0000 C CNN
F 1 "22k" V 4800 4700 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 4940 4690 50 0001 C CNN
F 3 "~" H 4900 4700 50 0001 C CNN
1 4900 4700
1 0 0 -1
$EndComp
Wire Wire Line
5150 5350 5200 5350
Wire Wire Line
5200 5350 5200 5000
Wire Wire Line
5200 5000 6000 5000
Wire Wire Line
6000 5000 6000 4500
Wire Wire Line
6000 4500 5900 4500
Connection ~ 5200 5350
Wire Wire Line
5200 5350 5300 5350
Connection ~ 6000 4500
Wire Wire Line
5300 4500 4900 4500
Wire Wire Line
4900 4500 4900 4550
Wire Wire Line
4900 4850 6150 4850
Wire Wire Line
6150 4850 6150 5350
Wire Wire Line
6150 5350 5900 5350
Connection ~ 4900 4500
Wire Wire Line
4850 5350 4350 5350
Connection ~ 4350 5350
Wire Wire Line
4350 5350 4350 5500
$Comp
L power:GND #PWR031
U 1 1 60FB81DD
P 4350 5900
F 0 "#PWR031" H 4350 5650 50 0001 C CNN
F 1 "GND" H 4355 5727 50 0000 C CNN
F 2 "" H 4350 5900 50 0001 C CNN
F 3 "" H 4350 5900 50 0001 C CNN
1 4350 5900
1 0 0 -1
$EndComp
$Comp
L Device:C C19
U 1 1 60FCB99A
P 4350 5650
F 0 "C19" H 4400 5550 50 0000 L CNN
F 1 "0.1uF" H 4000 5750 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 4388 5500 50 0001 C CNN
F 3 "~" H 4350 5650 50 0001 C CNN
1 4350 5650
-1 0 0 1
$EndComp
Wire Wire Line
4350 5800 4350 5900
$Comp
L Device:R_US R14
U 1 1 60FF7380
P 3000 1600
F 0 "R14" H 3068 1646 50 0000 L CNN
F 1 "5.6M" H 3068 1555 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3040 1590 50 0001 C CNN
F 3 "~" H 3000 1600 50 0001 C CNN
1 3000 1600
1 0 0 -1
$EndComp
$Comp
L Device:C C18
U 1 1 60FF7386
P 3000 2150
F 0 "C18" H 3115 2196 50 0000 L CNN
F 1 "0.33uF" H 3115 2105 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 3038 2000 50 0001 C CNN
F 3 "~" H 3000 2150 50 0001 C CNN
1 3000 2150
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR030
U 1 1 60FF7396
P 3000 2400
F 0 "#PWR030" H 3000 2150 50 0001 C CNN
F 1 "GND" H 3005 2227 50 0000 C CNN
F 2 "" H 3000 2400 50 0001 C CNN
F 3 "" H 3000 2400 50 0001 C CNN
1 3000 2400
1 0 0 -1
$EndComp
Wire Wire Line
3000 2400 3000 2300
$Comp
L 4xxx:4066 U11
U 1 1 60FFF569
P 7350 4250
F 0 "U11" V 7396 4122 50 0000 R CNN
F 1 "4066" V 7305 4122 50 0000 R CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 7350 4250 50 0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 7350 4250 50 0001 C CNN
1 7350 4250
0 -1 -1 0
$EndComp
$Comp
L 4xxx:4066 U11
U 2 1 6100162B
P 4350 4900
F 0 "U11" V 4396 4772 50 0000 R CNN
F 1 "4066" V 4305 4772 50 0000 R CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 4350 4900 50 0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 4350 4900 50 0001 C CNN
2 4350 4900
0 -1 -1 0
$EndComp
$Comp
L 4xxx:4066 U11
U 3 1 61001D7C
P 7250 5550
F 0 "U11" V 7296 5422 50 0000 R CNN
F 1 "4066" V 7205 5422 50 0000 R CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 7250 5550 50 0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 7250 5550 50 0001 C CNN
3 7250 5550
1 0 0 -1
$EndComp
$Comp
L 4xxx:4066 U11
U 4 1 6100250F
P 7100 2550
F 0 "U11" H 7100 2377 50 0000 C CNN
F 1 "4066" H 7100 2286 50 0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 7100 2550 50 0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 7100 2550 50 0001 C CNN
4 7100 2550
-1 0 0 -1
$EndComp
Wire Wire Line
6000 4500 6650 4500
$Comp
L Diode:1N914 D18
U 1 1 61026B80
P 7700 4750
F 0 "D18" H 7700 4534 50 0000 C CNN
F 1 "1N914" H 7700 4625 50 0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7700 4575 50 0001 C CNN
F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 7700 4750 50 0001 C CNN
1 7700 4750
-1 0 0 1
$EndComp
Wire Wire Line
4350 5350 4350 5200
Wire Wire Line
4350 4600 4350 4500
Wire Wire Line
4350 4500 4900 4500
Wire Wire Line
1750 5350 2250 5350
Wire Wire Line
2250 5350 2250 5800
$Comp
L power:GND #PWR026
U 1 1 61054316
P 2250 5800
F 0 "#PWR026" H 2250 5550 50 0001 C CNN
F 1 "GND" H 2255 5627 50 0000 C CNN
F 2 "" H 2250 5800 50 0001 C CNN
F 3 "" H 2250 5800 50 0001 C CNN
1 2250 5800
1 0 0 -1
$EndComp
$Comp
L power:+5V #PWR027
U 1 1 6105BADF
P 2700 3750
F 0 "#PWR027" H 2700 3600 50 0001 C CNN
F 1 "+5V" H 2715 3923 50 0000 C CNN
F 2 "" H 2700 3750 50 0001 C CNN
F 3 "" H 2700 3750 50 0001 C CNN
1 2700 3750
1 0 0 -1
$EndComp
$Comp
L Device:C C17
U 1 1 6106E29B
P 2700 5650
F 0 "C17" H 2750 5550 50 0000 L CNN
F 1 "0.33uF" H 2350 5750 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 2738 5500 50 0001 C CNN
F 3 "~" H 2700 5650 50 0001 C CNN
1 2700 5650
-1 0 0 1
$EndComp
Wire Wire Line
2700 4900 2700 5500
$Comp
L power:GND #PWR028
U 1 1 610755A7
P 2700 5900
F 0 "#PWR028" H 2700 5650 50 0001 C CNN
F 1 "GND" H 2705 5727 50 0000 C CNN
F 2 "" H 2700 5900 50 0001 C CNN
F 3 "" H 2700 5900 50 0001 C CNN
1 2700 5900
1 0 0 -1
$EndComp
Wire Wire Line
2700 5900 2700 5800
Wire Wire Line
3950 4900 4000 4900
Connection ~ 4000 4900
Wire Wire Line
4000 4900 4050 4900
Wire Wire Line
7350 3950 7350 3850
$Comp
L Jumper:Jumper_3_Open JP2
U 1 1 6116CC01
P 6650 4250
F 0 "JP2" V 6600 4450 50 0000 C CNN
F 1 "ShiftLock Select" V 6700 4650 50 0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal" H 6650 4250 50 0001 C CNN
F 3 "~" H 6650 4250 50 0001 C CNN
1 6650 4250
0 -1 1 0
$EndComp
Wire Wire Line
7350 4550 7350 4750
$Comp
L power:+5V #PWR029
U 1 1 6119EF3F
P 3000 850
F 0 "#PWR029" H 3000 700 50 0001 C CNN
F 1 "+5V" H 3015 1023 50 0000 C CNN
F 2 "" H 3000 850 50 0001 C CNN
F 3 "" H 3000 850 50 0001 C CNN
1 3000 850
1 0 0 -1
$EndComp
$Comp
L power:+5V #PWR035
U 1 1 61245055
P 7850 5150
F 0 "#PWR035" H 7850 5000 50 0001 C CNN
F 1 "+5V" H 7865 5323 50 0000 C CNN
F 2 "" H 7850 5150 50 0001 C CNN
F 3 "" H 7850 5150 50 0001 C CNN
1 7850 5150
1 0 0 -1
$EndComp
Wire Wire Line
7850 5150 7850 5350
Wire Wire Line
7850 5350 8000 5350
Text HLabel 8000 3850 2 50 Input ~ 0
Col0
Text HLabel 8000 4750 2 50 Output ~ 0
Row0
$Comp
L Device:C C20
U 1 1 61431129
P 6150 2900
F 0 "C20" H 6265 2946 50 0000 L CNN
F 1 "0.33uF" H 6265 2855 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 6188 2750 50 0001 C CNN
F 3 "~" H 6150 2900 50 0001 C CNN
1 6150 2900
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR032
U 1 1 6143112F
P 6150 3150
F 0 "#PWR032" H 6150 2900 50 0001 C CNN
F 1 "GND" H 6155 2977 50 0000 C CNN
F 2 "" H 6150 3150 50 0001 C CNN
F 3 "" H 6150 3150 50 0001 C CNN
1 6150 3150
1 0 0 -1
$EndComp
Wire Wire Line
6150 3150 6150 3050
$Comp
L Device:R_US R17
U 1 1 614646B8
P 5900 2550
F 0 "R17" V 5695 2550 50 0000 C CNN
F 1 "100k" V 5786 2550 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 5940 2540 50 0001 C CNN
F 3 "~" H 5900 2550 50 0001 C CNN
1 5900 2550
0 1 1 0
$EndComp
$Comp
L Device:R_US R13
U 1 1 614BA7F2
P 3000 1100
F 0 "R13" H 3068 1146 50 0000 L CNN
F 1 "100K" H 3068 1055 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3040 1090 50 0001 C CNN
F 3 "~" H 3000 1100 50 0001 C CNN
1 3000 1100
1 0 0 -1
$EndComp
Wire Wire Line
3000 1400 1750 1400
Wire Wire Line
3000 1250 3000 1350
Wire Wire Line
3850 1800 3400 1800
Wire Wire Line
3000 1750 3000 1800
Connection ~ 3000 1800
Wire Wire Line
3000 1800 3000 2000
Connection ~ 3000 1400
Wire Wire Line
3000 1400 3000 1450
Wire Wire Line
4450 1800 4800 1800
Wire Wire Line
6150 2550 6150 2750
Wire Wire Line
7100 1800 7100 2250
$Comp
L 74xx:74LS14 U10
U 5 1 6168AA55
P 5250 2550
F 0 "U10" H 5250 2867 50 0000 C CNN
F 1 "74LS14" H 5250 2776 50 0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 5250 2550 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 5250 2550 50 0001 C CNN
5 5250 2550
1 0 0 -1
$EndComp
Wire Wire Line
6150 2550 6050 2550
Connection ~ 6150 2550
Wire Wire Line
5750 2550 5550 2550
Wire Wire Line
4950 2550 4800 2550
Wire Wire Line
4800 2550 4800 1800
Connection ~ 4800 1800
Wire Wire Line
4800 1800 7100 1800
Wire Wire Line
6150 2550 6800 2550
Wire Wire Line
7400 2550 7800 2550
Wire Wire Line
7800 3000 7800 3150
Wire Wire Line
7800 2700 7800 2550
$Comp
L Device:R_US R18
U 1 1 61505BC8
P 7800 2850
F 0 "R18" H 7868 2896 50 0000 L CNN
F 1 "1K" H 7868 2805 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 7840 2840 50 0001 C CNN
F 3 "~" H 7800 2850 50 0001 C CNN
1 7800 2850
-1 0 0 1
$EndComp
Connection ~ 7800 2550
Wire Wire Line
7800 2550 8050 2550
$Comp
L power:GND #PWR034
U 1 1 6170BBEC
P 7800 3150
F 0 "#PWR034" H 7800 2900 50 0001 C CNN
F 1 "GND" H 7805 2977 50 0000 C CNN
F 2 "" H 7800 3150 50 0001 C CNN
F 3 "" H 7800 3150 50 0001 C CNN
1 7800 3150
1 0 0 -1
$EndComp
$Comp
L Diode:1N914 D17
U 1 1 6170E5F0
P 3400 1600
F 0 "D17" V 3500 1550 50 0000 C CNN
F 1 "1N914" V 3300 1450 50 0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 3400 1425 50 0001 C CNN
F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 3400 1600 50 0001 C CNN
1 3400 1600
0 -1 -1 0
$EndComp
Wire Wire Line
3400 1450 3400 1350
Wire Wire Line
3400 1750 3400 1800
Connection ~ 3400 1800
Wire Wire Line
3400 1800 3000 1800
Wire Wire Line
3000 1350 3400 1350
Connection ~ 3000 1350
Wire Wire Line
3000 1350 3000 1400
Wire Wire Line
3000 850 3000 950
Wire Wire Line
1750 1800 2150 1800
Wire Wire Line
2150 1800 2150 2400
$Comp
L power:GND #PWR025
U 1 1 617A42C5
P 2150 2400
F 0 "#PWR025" H 2150 2150 50 0001 C CNN
F 1 "GND" H 2155 2227 50 0000 C CNN
F 2 "" H 2150 2400 50 0001 C CNN
F 3 "" H 2150 2400 50 0001 C CNN
1 2150 2400
1 0 0 -1
$EndComp
Wire Wire Line
9700 2550 9300 2550
Wire Wire Line
1800 4250 2700 4250
Wire Wire Line
2700 4900 2700 4750
Wire Wire Line
2700 4250 2700 4450
$Comp
L Device:R_US R12
U 1 1 61058683
P 2700 4600
F 0 "R12" H 2600 4750 50 0000 L CNN
F 1 "56K" H 2450 4550 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2740 4590 50 0001 C CNN
F 3 "~" H 2700 4600 50 0001 C CNN
1 2700 4600
1 0 0 -1
$EndComp
Connection ~ 2700 4900
$Comp
L Device:R_US R11
U 1 1 61C4846D
P 2700 4050
F 0 "R11" H 2600 4200 50 0000 L CNN
F 1 "4.7K" H 2450 4000 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2740 4040 50 0001 C CNN
F 3 "~" H 2700 4050 50 0001 C CNN
1 2700 4050
1 0 0 -1
$EndComp
Wire Wire Line
2700 3900 2700 3750
Wire Wire Line
2700 4250 2700 4200
Connection ~ 2700 4250
Text Notes 1350 5150 0 50 ~ 0
Debounce Time approx 40 msec
Text Notes 2600 2850 0 50 ~ 0
Reset Delay time: about 3.3 sec\nReset delay is approx. proportional to 10sec/uF * C1 value
Text Notes 6400 3150 0 50 ~ 0
~RESET~ pulse is approx 50 usec.
$Comp
L 74xx:74LS14 U10
U 7 1 61CB40D7
P 3850 6800
F 0 "U10" H 4080 6846 50 0000 L CNN
F 1 "74LS14" H 4080 6755 50 0000 L CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 3850 6800 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 3850 6800 50 0001 C CNN
7 3850 6800
1 0 0 -1
$EndComp
$Comp
L 4xxx:4066 U11
U 5 1 61CB40DD
P 3150 6800
F 0 "U11" H 3380 6846 50 0000 L CNN
F 1 "4066" H 3380 6755 50 0000 L CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 3150 6800 50 0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 3150 6800 50 0001 C CNN
5 3150 6800
1 0 0 -1
$EndComp
Wire Wire Line
3150 6300 3150 6200
Wire Wire Line
3150 6200 3500 6200
Wire Wire Line
3850 6200 3850 6300
Wire Wire Line
3850 7300 3850 7350
Wire Wire Line
3850 7350 3500 7350
Wire Wire Line
3150 7350 3150 7300
$Comp
L power:GND #PWR038
U 1 1 61CB40E9
P 3500 7400
F 0 "#PWR038" H 3500 7150 50 0001 C CNN
F 1 "GND" H 3505 7227 50 0000 C CNN
F 2 "" H 3500 7400 50 0001 C CNN
F 3 "" H 3500 7400 50 0001 C CNN
1 3500 7400
1 0 0 -1
$EndComp
Wire Wire Line
3500 7400 3500 7350
Connection ~ 3500 7350
Wire Wire Line
3500 7350 3150 7350
$Comp
L power:+5V #PWR037
U 1 1 61CB40F2
P 3500 6100
F 0 "#PWR037" H 3500 5950 50 0001 C CNN
F 1 "+5V" H 3515 6273 50 0000 C CNN
F 2 "" H 3500 6100 50 0001 C CNN
F 3 "" H 3500 6100 50 0001 C CNN
1 3500 6100
1 0 0 -1
$EndComp
Wire Wire Line
3500 6100 3500 6200
Connection ~ 3500 6200
Wire Wire Line
3500 6200 3850 6200
$Comp
L Diode:1N914 D19
U 1 1 61FD244F
P 8050 2300
F 0 "D19" V 8150 2400 50 0000 C CNN
F 1 "1N914" V 7950 2150 50 0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 8050 2125 50 0001 C CNN
F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 8050 2300 50 0001 C CNN
1 8050 2300
0 -1 -1 0
$EndComp
$Comp
L Device:C C21
U 1 1 61FD5372
P 8050 1900
F 0 "C21" H 8165 1946 50 0000 L CNN
F 1 "10uF" H 8165 1855 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 8088 1750 50 0001 C CNN
F 3 "~" H 8050 1900 50 0001 C CNN
1 8050 1900
1 0 0 -1
$EndComp
Wire Wire Line
8050 1750 8050 1550
Wire Wire Line
8050 2550 8050 2450
Connection ~ 8050 2550
Wire Wire Line
8050 2550 8200 2550
Wire Wire Line
8050 2150 8050 2050
Text Notes 5950 1400 0 50 ~ 0
Power on ~RESET~ approx. 18 msec for 10 uF C21.
Wire Wire Line
7350 3850 8000 3850
Wire Wire Line
4000 3950 4000 4900
Wire Wire Line
4000 3950 6650 3950
Wire Wire Line
6650 3950 6650 4000
Wire Wire Line
7050 4250 6950 4250
Wire Wire Line
7350 4750 7550 4750
Wire Wire Line
8000 4750 7850 4750
Wire Wire Line
6950 5550 6850 5550
Wire Wire Line
6850 5550 6850 5850
$Comp
L power:GND #PWR033
U 1 1 62047B17
P 6850 5850
F 0 "#PWR033" H 6850 5600 50 0001 C CNN
F 1 "GND" H 6855 5677 50 0000 C CNN
F 2 "" H 6850 5850 50 0001 C CNN
F 3 "" H 6850 5850 50 0001 C CNN
1 6850 5850
1 0 0 -1
$EndComp
Wire Wire Line
6950 4250 6950 5200
Wire Wire Line
6950 5200 7250 5200
Wire Wire Line
7250 5200 7250 5250
Connection ~ 6950 4250
Wire Wire Line
6950 4250 6800 4250
Wire Wire Line
8000 5550 7550 5550
Text Notes 6200 4050 0 50 ~ 0
Mechanical
Text Notes 6400 4500 0 50 ~ 0
Soft
Wire Wire Line
2700 4900 3350 4900
$Comp
L Diode:1N914 D20
U 1 1 621136A6
P 9150 2550
F 0 "D20" H 9100 2650 50 0000 C CNN
F 1 "1N914" H 9350 2600 50 0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9150 2375 50 0001 C CNN
F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 9150 2550 50 0001 C CNN
1 9150 2550
1 0 0 -1
$EndComp
Wire Wire Line
9000 2550 8800 2550
$Comp
L power:+5V #PWR?
U 1 1 621280EA
P 8050 1550
F 0 "#PWR?" H 8050 1400 50 0001 C CNN
F 1 "+5V" H 8065 1723 50 0000 C CNN
F 2 "" H 8050 1550 50 0001 C CNN
F 3 "" H 8050 1550 50 0001 C CNN
1 8050 1550
1 0 0 -1
$EndComp
$EndSCHEMATC
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