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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:74lv1t34
LIBS:93lc46b
LIBS:Diodes_Mosfet
LIBS:hole
LIBS:Microchip_CAN
LIBS:Microchip_regulator
LIBS:MPS_Regulators
LIBS:St_Baluns
LIBS:Ti_Logic
LIBS:Ti_Regulators
LIBS:tsl256x
LIBS:voltage-translators
LIBS:Silabs
LIBS:Wurth_Eth
LIBS:Ti_POE
LIBS:STM32
LIBS:Microchip_Ethernet
LIBS:STM32F107VCT
LIBS:Pulse_Magnetics
LIBS:ALPS_Tact
LIBS:Panasonic_Relays
LIBS:Load_Driver
LIBS:Diode_Bridge
LIBS:Diodes_Regul
LIBS:Dpak_Diode
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LIBS:symbol
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LIBS:brain-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
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Sheet 8 8
Title "RTC"
Date "2016-09-09"
Comp "BetaMachine"
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Comment1 "Brain"
Comment2 "AAA Control Backend"
Comment3 "Nipo"
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Comment4 ""
$EndDescr
$Comp
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L PCF8563 U17
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U 1 1 57B57780
P 4700 4300
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F 0 "U17" H 4450 3925 50  0000 C CNN
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F 1 "PCF8563" H 4625 4300 50  0000 C CNN
F 2 "Housings_SSOP:TSSOP-8_3x3mm_Pitch0.65mm" H 4700 4300 50  0001 C CNN
F 3 "" H 4700 4300 50  0000 C CNN
F 4 "NXP" H 4700 4300 60  0001 C CNN "MFN"
F 5 "PCF8563TS/5,118" H 4700 4300 60  0001 C CNN "MFP"
F 6 "771-PCF8563TS/5118" H 4700 4300 60  0001 C CNN "S1PN"
F 7 "I2C RTC" H 4700 4300 60  0001 C CNN "Description"
	1    4700 4300
	-1   0    0    -1  
$EndComp
$Comp
L Crystal Y1
U 1 1 57B577CF
P 5250 4300
F 0 "Y1" V 5204 4169 50  0000 R CNN
F 1 "32768Hz" V 5295 4169 50  0000 R CNN
F 2 "Abracon:ABS07" H 5250 4300 50  0001 C CNN
F 3 "" H 5250 4300 50  0000 C CNN
F 4 "Abracon" H 5250 4300 60  0001 C CNN "MFN"
F 5 "ABS07-32.768KHZ-1-T" H 5250 4300 60  0001 C CNN "MFP"
F 6 "815-ABS07-32.7K-1-T" H 5250 4300 60  0001 C CNN "S1PN"
F 7 "Quartz 32.768KHz 12.5pF -40C +85C 10ppm" H 5250 4300 60  0001 C CNN "Description"
	1    5250 4300
	0    -1   1    0   
$EndComp
Wire Wire Line
	5250 4150 5250 4100
Wire Wire Line
	5100 4100 5750 4100
Wire Wire Line
	5250 4450 5250 4500
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	5750 4100 5750 4600
Connection ~ 5250 4100
$Comp
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L C C40
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U 1 1 57B57860
P 5750 4750
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F 0 "C40" H 5865 4796 50  0000 L CNN
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F 1 "12pF" H 5865 4705 50  0000 L CNN
F 2 "Resistors_SMD:R_0603" H 5788 4600 50  0001 C CNN
F 3 "" H 5750 4750 50  0000 C CNN
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F 4 "Vishay" H 7000 2150 60  0001 C CNN "MFN"
F 5 "VJ0603A120KXJPW1BC" H 7000 2150 60  0001 C CNN "MFP"
F 6 "77-VJ0603A120KXJPBC" H 7000 2150 60  0001 C CNN "S1PN"
F 7 "16V, C0G, 10%, 0603" H 7000 2150 60  0001 C CNN "Description"
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	1    5750 4750
	-1   0    0    -1  
$EndComp
Wire Wire Line
	5750 4900 5750 5000
$Comp
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L GND #PWR088
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U 1 1 57B578C5
P 5750 5000
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F 0 "#PWR088" H 5750 4750 50  0001 C CNN
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F 1 "GND" H 5755 4827 50  0000 C CNN
F 2 "" H 5750 5000 50  0000 C CNN
F 3 "" H 5750 5000 50  0000 C CNN
	1    5750 5000
	-1   0    0    -1  
$EndComp
Wire Wire Line
	4700 4700 4700 5000
$Comp
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L GND #PWR089
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U 1 1 57B579F8
P 4700 5000
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F 0 "#PWR089" H 4700 4750 50  0001 C CNN
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F 1 "GND" H 4705 4827 50  0000 C CNN
F 2 "" H 4700 5000 50  0000 C CNN
F 3 "" H 4700 5000 50  0000 C CNN
	1    4700 5000
	-1   0    0    -1  
$EndComp
Wire Wire Line
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Wire Wire Line
	4000 4500 4300 4500
Text HLabel 4000 4500 0    60   Output ~ 0
IRQ
$Comp
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L +3V3 #PWR090
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U 1 1 57B57CFE
P 6900 2500
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F 0 "#PWR090" H 6900 2350 50  0001 C CNN
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F 1 "+3V3" H 6915 2673 50  0000 C CNN
F 2 "" H 6900 2500 50  0000 C CNN
F 3 "" H 6900 2500 50  0000 C CNN
	1    6900 2500
	1    0    0    -1  
$EndComp
$Comp
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L C C42
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U 1 1 57B581B3
P 7300 3850
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F 0 "C42" H 7415 3896 50  0000 L CNN
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F 1 "10nF" H 7415 3805 50  0000 L CNN
F 2 "Resistors_SMD:R_0603" H 7338 3700 50  0001 C CNN
F 3 "" H 7300 3850 50  0000 C CNN
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F 4 "Wurth Electronics" H 7000 2150 60  0001 C CNN "MFN"
F 5 "885012206065" H 7000 2150 60  0001 C CNN "MFP"
F 6 "710-885012206065" H 7000 2150 60  0001 C CNN "S1PN"
F 7 "25V, X7R, 10%, 10nF, 0603" H 7000 2150 60  0001 C CNN "Description"
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	1    7300 3850
	1    0    0    -1  
$EndComp
Wire Wire Line
	5250 4500 5100 4500
$Comp
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L CP C41
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U 1 1 57B583E8
P 6500 3850
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F 0 "C41" H 6615 3896 50  0000 L CNN
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F 1 "0.47F" H 6615 3805 50  0000 L CNN
F 2 "PowerCap:KR-5R5Cxx4-R" H 6538 3700 50  0001 C CNN
F 3 "" H 6500 3850 50  0000 C CNN
F 4 "Eaton" H 6500 3850 60  0001 C CNN "MFN"
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F 5 "KR-5R5C474-R" H 6500 3850 60  0001 C CNN "MFP"
F 6 "504-KR-5R5C474-R" H 6500 3850 60  0001 C CNN "S1PN"
F 7 "5.5V Supercap" H 6500 3850 60  0001 C CNN "Description"
	1    6500 3850
	1    0    0    -1  
$EndComp
Wire Wire Line
	6500 3200 6500 3700
Wire Wire Line
	7300 3200 7300 3700
Connection ~ 6500 3500
Wire Wire Line
	6500 4000 6500 4200
Wire Wire Line
	7300 4000 7300 4200
$Comp
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L GND #PWR091
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U 1 1 57B585B6
P 6500 4200
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F 0 "#PWR091" H 6500 3950 50  0001 C CNN
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F 1 "GND" H 6505 4027 50  0000 C CNN
F 2 "" H 6500 4200 50  0000 C CNN
F 3 "" H 6500 4200 50  0000 C CNN
	1    6500 4200
	1    0    0    -1  
$EndComp
$Comp
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L GND #PWR092
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U 1 1 57B585D9
P 7300 4200
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F 0 "#PWR092" H 7300 3950 50  0001 C CNN
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F 1 "GND" H 7305 4027 50  0000 C CNN
F 2 "" H 7300 4200 50  0000 C CNN
F 3 "" H 7300 4200 50  0000 C CNN
	1    7300 4200
	1    0    0    -1  
$EndComp
$Comp
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L R R32
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U 1 1 57B586D2
P 6900 2750
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F 0 "R32" V 6693 2750 50  0000 C CNN
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F 1 "100R" V 6784 2750 50  0000 C CNN
F 2 "Resistors_SMD:R_0603" V 6830 2750 50  0001 C CNN
F 3 "" H 6900 2750 50  0000 C CNN
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F 4 "Panasonic" H 5550 3850 60  0001 C CNN "MFN"
F 5 "ERJ-3EKF1000V" H 5550 3850 60  0001 C CNN "MFP"
F 6 "667-ERJ-3EKF1000V" H 5550 3850 60  0001 C CNN "S1PN"
F 7 "1%, 75V, 0603" H 5550 3850 60  0001 C CNN "Description"
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	1    6900 2750
	-1   0    0    1   
$EndComp
Wire Wire Line
	6900 2500 6900 2600
$Comp
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L D_Schottky_x2_ACom_KKA D11
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U 1 1 57B58B53
P 6900 3200
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F 0 "D11" H 6900 3324 50  0000 C CNN
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F 1 "Diode" H 6900 3415 50  0000 C CNN
F 2 "Housings_SOT-23_SOT-143_TSOT-6:SOT-23" H 6900 3200 50  0001 C CNN
F 3 "" H 6900 3200 50  0000 C CNN
F 4 "Diodes Incorporated" H 6900 3200 60  0001 C CNN "MFN"
F 5 "BAW156-7-F" H 6900 3200 60  0001 C CNN "MFP"
F 6 "621-BAW156-F" H 6900 3200 60  0001 C CNN "S1PN"
F 7 "Low leakage 85V" H 6900 3200 60  0001 C CNN "Description"
	1    6900 3200
	1    0    0    1   
$EndComp
Wire Wire Line
	6900 2900 6900 3000
Wire Wire Line
	6600 3200 6500 3200
Wire Wire Line
	4700 3500 7300 3500
Wire Wire Line
	7300 3200 7200 3200
Text Notes 5300 3300 0    60   ~ 0
Supercap charge @33mA\n90% charge time:\n2*R*C = 94s
$Comp
L STM32F107VCT U1
U 5 1 57BE29BE
P 1400 4100
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AR Path="/57BE29BE" Ref="U1"  Part="5" 
AR Path="/57A213DD/57BE29BE" Ref="U1"  Part="5" 
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F 0 "U1" H 1824 4645 50  0000 C CNN
F 1 "STM32F107VCT" H 1824 4554 50  0000 C CNN
F 2 "Housings_QFP:LQFP-100_14x14mm_Pitch0.5mm" H 1824 4463 50  0001 C CNN
F 3 "" H 1400 4100 50  0000 C CNN
F 4 "STMicroelectronics" H 10200 5800 60  0001 C CNN "MFN"
F 5 "STM32F107VCT7" H 10200 5800 60  0001 C CNN "MFP"
F 6 "511-STM32F107VCT7" H 10200 5800 60  0001 C CNN "S1PN"
F 7 "STM32 Connectivity, 72MHz, 256/64kB" H 10200 5800 60  0001 C CNN "Description"
	5    1400 4100
	1    0    0    -1  
$EndComp
Connection ~ 7300 3500
Wire Wire Line
	4700 3500 4700 3900
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Connection ~ 3350 4200
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Wire Wire Line
	4300 4400 4000 4400
Text HLabel 4000 4400 0    60   Output ~ 0
OSC_OUT
Text Label 3900 4100 0    60   ~ 0
SCL
Text Label 3900 4200 0    60   ~ 0
SDA
$Comp
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L R R30
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U 1 1 57CE1FC1
P 2500 3750
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F 0 "R30" V 2580 3750 50  0000 C CNN
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F 1 "4k7" V 2400 3750 50  0000 C CNN
F 2 "Resistors_SMD:R_0603" V 2430 3750 50  0001 C CNN
F 3 "" H 2500 3750 50  0000 C CNN
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F 4 "Panasonic" H 5550 3850 60  0001 C CNN "MFN"
F 5 "ERJ-3GEYJ472V" H 5550 3850 60  0001 C CNN "MFP"
F 6 "667-ERJ-3GEYJ472V" H 5550 3850 60  0001 C CNN "S1PN"
F 7 "75V, 5%, 0603" H 5550 3850 60  0001 C CNN "Description"
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	1    2500 3750
	1    0    0    -1  
$EndComp
Wire Wire Line
	2500 3600 2500 3300
Wire Wire Line
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Wire Wire Line
	2500 3900 2500 4100
Connection ~ 2500 4100
Wire Wire Line
	2800 3900 2800 4200
Connection ~ 2800 4200
$Comp
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L +3V3 #PWR093
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U 1 1 57CE211C
P 2500 3300
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F 0 "#PWR093" H 2500 3150 50  0001 C CNN
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F 1 "+3V3" H 2500 3440 50  0000 C CNN
F 2 "" H 2500 3300 50  0000 C CNN
F 3 "" H 2500 3300 50  0000 C CNN
	1    2500 3300
	1    0    0    -1  
$EndComp
$Comp
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L +3V3 #PWR094
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U 1 1 57CE2151
P 2800 3300
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F 0 "#PWR094" H 2800 3150 50  0001 C CNN
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F 1 "+3V3" H 2800 3440 50  0000 C CNN
F 2 "" H 2800 3300 50  0000 C CNN
F 3 "" H 2800 3300 50  0000 C CNN
	1    2800 3300
	1    0    0    -1  
$EndComp
$Comp
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L R R31
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U 1 1 57CE26D3
P 2800 3750
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F 0 "R31" V 2880 3750 50  0000 C CNN
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F 1 "4k7" V 2700 3750 50  0000 C CNN
F 2 "Resistors_SMD:R_0603" V 2730 3750 50  0001 C CNN
F 3 "" H 2800 3750 50  0000 C CNN
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F 4 "Panasonic" H 5550 3850 60  0001 C CNN "MFN"
F 5 "ERJ-3GEYJ472V" H 5550 3850 60  0001 C CNN "MFP"
F 6 "667-ERJ-3GEYJ472V" H 5550 3850 60  0001 C CNN "S1PN"
F 7 "75V, 5%, 0603" H 5550 3850 60  0001 C CNN "Description"
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	1    2800 3750
	1    0    0    -1  
$EndComp
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Text Notes 5050 2850 0    60   ~ 0
Local RTC + Supercap\nTracks time during power outage
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$Comp
L STM32F107VCT U?
U 9 1 582BAB57
P 1500 2500
AR Path="/582BAB57" Ref="U?"  Part="5" 
AR Path="/57A213DD/582BAB57" Ref="U1"  Part="9" 
AR Path="/57A213D7/582BAB57" Ref="U?"  Part="8" 
F 0 "U1" H 1924 3045 50  0000 C CNN
F 1 "STM32F107VCT" H 1924 2954 50  0000 C CNN
F 2 "Housings_QFP:LQFP-100_14x14mm_Pitch0.5mm" H 1924 2863 50  0001 C CNN
F 3 "" H 1500 2500 50  0000 C CNN
F 4 "STMicroelectronics" H 10300 4200 60  0001 C CNN "MFN"
F 5 "STM32F107VCT7" H 10300 4200 60  0001 C CNN "MFP"
F 6 "511-STM32F107VCT7" H 10300 4200 60  0001 C CNN "S1PN"
F 7 "STM32 Connectivity, 72MHz, 256/64kB" H 10300 4200 60  0001 C CNN "Description"
	9    1500 2500
	1    0    0    -1  
$EndComp
Connection ~ 3450 4100
$Comp
L CONN_02X05 P15
U 1 1 582BAB5F
P 3250 2500
F 0 "P15" H 3250 2800 50  0000 C CNN
F 1 "UART3" H 3250 2200 50  0000 C CNN
F 2 "SMD_pin_header:TH_2mm_02x05" H 3250 2500 50  0001 C CNN
F 3 "" H 3250 2500 50  0000 C CNN
F 4 "OB" V 3250 2500 60  0000 C CNN "Installed"
	1    3250 2500
	0    1    1    0   
$EndComp
Wire Wire Line
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Wire Wire Line
	2800 2750 3050 2750
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Wire Wire Line
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Wire Wire Line
	2600 2950 3250 2950
Wire Wire Line
	3250 2950 3250 2750
Wire Wire Line
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Wire Wire Line
	2800 2400 2800 2250
Wire Wire Line
	2800 2250 3050 2250
Wire Wire Line
	2300 2300 2700 2300
Wire Wire Line
	2700 2300 2700 2150
Wire Wire Line
	2700 2150 3150 2150
Wire Wire Line
	3150 2150 3150 2250
Wire Wire Line
	3450 4100 3450 2750
Wire Wire Line
	3350 4200 3350 2750
Wire Wire Line
	3350 2250 3350 2150
Wire Wire Line
	3350 2150 3700 2150
Wire Wire Line
	3700 2150 3700 2350
$Comp
L GND #PWR095
U 1 1 582ED796
P 3700 2350
F 0 "#PWR095" H 3700 2100 50  0001 C CNN
F 1 "GND" H 3700 2200 50  0000 C CNN
F 2 "" H 3700 2350 50  0000 C CNN
F 3 "" H 3700 2350 50  0000 C CNN
	1    3700 2350
	1    0    0    -1  
$EndComp
Wire Wire Line
	3450 2250 3450 2050
$Comp
L +3V3 #PWR096
U 1 1 582ED814
P 3450 2050
F 0 "#PWR096" H 3450 1900 50  0001 C CNN
F 1 "+3V3" H 3450 2190 50  0000 C CNN
F 2 "" H 3450 2050 50  0000 C CNN
F 3 "" H 3450 2050 50  0000 C CNN
	1    3450 2050
	1    0    0    -1  
$EndComp
Wire Wire Line
	3250 2250 3250 2050
$Comp
L +5V #PWR097
U 1 1 582ED893
P 3250 2050
F 0 "#PWR097" H 3250 1900 50  0001 C CNN
F 1 "+5V" H 3250 2190 50  0000 C CNN
F 2 "" H 3250 2050 50  0000 C CNN
F 3 "" H 3250 2050 50  0000 C CNN
	1    3250 2050
	1    0    0    -1  
$EndComp
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$EndSCHEMATC