EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Connector:USB_A J?
U 1 1 5F874047
P 1500 1500
F 0 "J?" H 1557 1967 50  0000 C CNN
F 1 "USB_A" H 1557 1876 50  0000 C CNN
F 2 "" H 1650 1450 50  0001 C CNN
F 3 " ~" H 1650 1450 50  0001 C CNN
	1    1500 1500
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5F877F81
P 1750 2000
F 0 "#PWR?" H 1750 1750 50  0001 C CNN
F 1 "GND" H 1755 1827 50  0000 C CNN
F 2 "" H 1750 2000 50  0001 C CNN
F 3 "" H 1750 2000 50  0001 C CNN
	1    1750 2000
	1    0    0    -1  
$EndComp
Wire Wire Line
	1400 1900 1400 2000
$Comp
L power:PWR_FLAG #FLG?
U 1 1 5F878854
P 2000 1250
F 0 "#FLG?" H 2000 1325 50  0001 C CNN
F 1 "PWR_FLAG" H 2000 1423 50  0000 C CNN
F 2 "" H 2000 1250 50  0001 C CNN
F 3 "~" H 2000 1250 50  0001 C CNN
	1    2000 1250
	1    0    0    -1  
$EndComp
$Comp
L MCU_ST_STM32F0:STM32F072CBTx U?
U 1 1 5F878F8D
P 5500 3000
F 0 "U?" H 5450 1411 50  0000 C CNN
F 1 "STM32F072CBTx" H 5450 1320 50  0000 C CNN
F 2 "Package_QFP:LQFP-48_7x7mm_P0.5mm" H 4900 1600 50  0001 R CNN
F 3 "http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00090510.pdf" H 5500 3000 50  0001 C CNN
	1    5500 3000
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5F885927
P 5050 4600
F 0 "#PWR?" H 5050 4350 50  0001 C CNN
F 1 "GND" H 5055 4427 50  0000 C CNN
F 2 "" H 5050 4600 50  0001 C CNN
F 3 "" H 5050 4600 50  0001 C CNN
	1    5050 4600
	1    0    0    -1  
$EndComp
Wire Wire Line
	5050 4600 5050 4550
Wire Wire Line
	5050 4550 5300 4550
Wire Wire Line
	5600 4550 5600 4500
Wire Wire Line
	5500 4500 5500 4550
Connection ~ 5500 4550
Wire Wire Line
	5500 4550 5600 4550
Wire Wire Line
	5400 4500 5400 4550
Connection ~ 5400 4550
Wire Wire Line
	5400 4550 5500 4550
Wire Wire Line
	5300 4500 5300 4550
Connection ~ 5300 4550
Wire Wire Line
	5300 4550 5400 4550
$Comp
L power:+3V3 #PWR?
U 1 1 5F88771B
P 5300 1400
F 0 "#PWR?" H 5300 1250 50  0001 C CNN
F 1 "+3V3" H 5315 1573 50  0000 C CNN
F 2 "" H 5300 1400 50  0001 C CNN
F 3 "" H 5300 1400 50  0001 C CNN
	1    5300 1400
	1    0    0    -1  
$EndComp
Wire Wire Line
	5300 1400 5300 1450
Wire Wire Line
	5300 1450 5400 1450
Wire Wire Line
	5700 1450 5700 1500
Wire Wire Line
	5300 1450 5300 1500
Connection ~ 5300 1450
Wire Wire Line
	5400 1450 5400 1500
Connection ~ 5400 1450
Wire Wire Line
	5400 1450 5500 1450
Wire Wire Line
	5500 1450 5500 1500
Connection ~ 5500 1450
Wire Wire Line
	5500 1450 5600 1450
Wire Wire Line
	5600 1450 5600 1500
Connection ~ 5600 1450
Wire Wire Line
	5600 1450 5700 1450
$Comp
L Device:C_Small C?
U 1 1 5F891F39
P 10500 1100
F 0 "C?" H 10592 1146 50  0000 L CNN
F 1 "100n" H 10592 1055 50  0000 L CNN
F 2 "" H 10500 1100 50  0001 C CNN
F 3 "~" H 10500 1100 50  0001 C CNN
	1    10500 1100
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C?
U 1 1 5F892CC5
P 10150 1100
F 0 "C?" H 10242 1146 50  0000 L CNN
F 1 "100n" H 10242 1055 50  0000 L CNN
F 2 "" H 10150 1100 50  0001 C CNN
F 3 "~" H 10150 1100 50  0001 C CNN
	1    10150 1100
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C?
U 1 1 5F893113
P 9800 1100
F 0 "C?" H 9892 1146 50  0000 L CNN
F 1 "100n" H 9892 1055 50  0000 L CNN
F 2 "" H 9800 1100 50  0001 C CNN
F 3 "~" H 9800 1100 50  0001 C CNN
	1    9800 1100
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C?
U 1 1 5F89352A
P 9450 1100
F 0 "C?" H 9542 1146 50  0000 L CNN
F 1 "100n" H 9542 1055 50  0000 L CNN
F 2 "" H 9450 1100 50  0001 C CNN
F 3 "~" H 9450 1100 50  0001 C CNN
	1    9450 1100
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR?
U 1 1 5F893B24
P 10500 900
F 0 "#PWR?" H 10500 750 50  0001 C CNN
F 1 "+3V3" H 10515 1073 50  0000 C CNN
F 2 "" H 10500 900 50  0001 C CNN
F 3 "" H 10500 900 50  0001 C CNN
	1    10500 900 
	1    0    0    -1  
$EndComp
Wire Wire Line
	10500 900  10500 950 
Wire Wire Line
	10150 1000 10150 950 
Wire Wire Line
	10150 950  10500 950 
Connection ~ 10500 950 
Wire Wire Line
	10500 950  10500 1000
Wire Wire Line
	9800 1000 9800 950 
Wire Wire Line
	9800 950  10150 950 
Connection ~ 10150 950 
Wire Wire Line
	9450 1000 9450 950 
Wire Wire Line
	9450 950  9800 950 
Connection ~ 9800 950 
$Comp
L power:GND #PWR?
U 1 1 5F895DED
P 10500 1300
F 0 "#PWR?" H 10500 1050 50  0001 C CNN
F 1 "GND" H 10505 1127 50  0000 C CNN
F 2 "" H 10500 1300 50  0001 C CNN
F 3 "" H 10500 1300 50  0001 C CNN
	1    10500 1300
	1    0    0    -1  
$EndComp
Wire Wire Line
	10500 1200 10500 1250
Wire Wire Line
	10150 1200 10150 1250
Wire Wire Line
	10150 1250 10500 1250
Connection ~ 10500 1250
Wire Wire Line
	10500 1250 10500 1300
Wire Wire Line
	9800 1200 9800 1250
Wire Wire Line
	9800 1250 10150 1250
Connection ~ 10150 1250
Wire Wire Line
	9450 1200 9450 1250
Wire Wire Line
	9450 1250 9800 1250
Connection ~ 9800 1250
$Comp
L Device:C_Small C?
U 1 1 5F8978DB
P 9100 1100
F 0 "C?" H 9192 1146 50  0000 L CNN
F 1 "4.7u" H 9192 1055 50  0000 L CNN
F 2 "" H 9100 1100 50  0001 C CNN
F 3 "~" H 9100 1100 50  0001 C CNN
	1    9100 1100
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C?
U 1 1 5F89851C
P 8750 1100
F 0 "C?" H 8842 1146 50  0000 L CNN
F 1 "4.7u" H 8842 1055 50  0000 L CNN
F 2 "" H 8750 1100 50  0001 C CNN
F 3 "~" H 8750 1100 50  0001 C CNN
	1    8750 1100
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C?
U 1 1 5F8989CC
P 8400 1100
F 0 "C?" H 8492 1146 50  0000 L CNN
F 1 "10n" H 8492 1055 50  0000 L CNN
F 2 "" H 8400 1100 50  0001 C CNN
F 3 "~" H 8400 1100 50  0001 C CNN
	1    8400 1100
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C?
U 1 1 5F898D1B
P 8100 1100
F 0 "C?" H 8192 1146 50  0000 L CNN
F 1 "1u" H 8192 1055 50  0000 L CNN
F 2 "" H 8100 1100 50  0001 C CNN
F 3 "~" H 8100 1100 50  0001 C CNN
	1    8100 1100
	1    0    0    -1  
$EndComp
Wire Wire Line
	8100 1000 8100 950 
Wire Wire Line
	8100 950  8400 950 
Connection ~ 9450 950 
Wire Wire Line
	8100 1200 8100 1250
Wire Wire Line
	8100 1250 8400 1250
Connection ~ 9450 1250
Wire Wire Line
	8400 1000 8400 950 
Connection ~ 8400 950 
Wire Wire Line
	8400 950  8750 950 
Wire Wire Line
	8400 1200 8400 1250
Connection ~ 8400 1250
Wire Wire Line
	8400 1250 8750 1250
Wire Wire Line
	8750 1000 8750 950 
Connection ~ 8750 950 
Wire Wire Line
	8750 950  9100 950 
Wire Wire Line
	8750 1200 8750 1250
Connection ~ 8750 1250
Wire Wire Line
	8750 1250 9100 1250
Wire Wire Line
	9100 1000 9100 950 
Connection ~ 9100 950 
Wire Wire Line
	9100 950  9450 950 
Wire Wire Line
	9100 1200 9100 1250
Connection ~ 9100 1250
Wire Wire Line
	9100 1250 9450 1250
Text Label 2000 1600 2    50   ~ 0
D-
Text Label 2000 1500 2    50   ~ 0
D+
Text Label 6350 3900 2    50   ~ 0
D-
Text Label 6350 4000 2    50   ~ 0
D+
Wire Wire Line
	6100 3900 6350 3900
Wire Wire Line
	6100 4000 6350 4000
Wire Wire Line
	1800 1300 2000 1300
Wire Wire Line
	2300 1300 2300 1250
Wire Wire Line
	2000 1250 2000 1300
Connection ~ 2000 1300
Wire Wire Line
	2000 1300 2300 1300
Wire Wire Line
	1800 1500 2000 1500
Wire Wire Line
	1800 1600 2000 1600
$Comp
L power:PWR_FLAG #FLG?
U 1 1 5F8EC2DD
P 2000 1900
F 0 "#FLG?" H 2000 1975 50  0001 C CNN
F 1 "PWR_FLAG" H 2000 2073 50  0000 C CNN
F 2 "" H 2000 1900 50  0001 C CNN
F 3 "~" H 2000 1900 50  0001 C CNN
	1    2000 1900
	1    0    0    -1  
$EndComp
Wire Wire Line
	1750 2000 1750 1950
Wire Wire Line
	1500 1900 1500 1950
Wire Wire Line
	1500 1950 1750 1950
Wire Wire Line
	2000 1900 2000 1950
Wire Wire Line
	2000 1950 1750 1950
Connection ~ 1750 1950
$Comp
L power:GND #PWR?
U 1 1 5F8FB997
P 1400 2000
F 0 "#PWR?" H 1400 1750 50  0001 C CNN
F 1 "GND" H 1405 1827 50  0000 C CNN
F 2 "" H 1400 2000 50  0001 C CNN
F 3 "" H 1400 2000 50  0001 C CNN
	1    1400 2000
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R?
U 1 1 5F905B31
P 4200 2050
F 0 "R?" H 4259 2096 50  0000 L CNN
F 1 "10k" H 4259 2005 50  0000 L CNN
F 2 "" H 4200 2050 50  0001 C CNN
F 3 "~" H 4200 2050 50  0001 C CNN
	1    4200 2050
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5F9081DB
P 4200 2200
F 0 "#PWR?" H 4200 1950 50  0001 C CNN
F 1 "GND" H 4205 2027 50  0000 C CNN
F 2 "" H 4200 2200 50  0001 C CNN
F 3 "" H 4200 2200 50  0001 C CNN
	1    4200 2200
	1    0    0    -1  
$EndComp
Wire Wire Line
	4200 2200 4200 2150
NoConn ~ 4800 1700
NoConn ~ 4800 2100
NoConn ~ 4800 2200
NoConn ~ 4800 2400
NoConn ~ 4800 2500
NoConn ~ 4800 2600
$Comp
L Switch:SW_Push SW?
U 1 1 5F925207
P 4200 1650
F 0 "SW?" V 4246 1602 50  0000 R CNN
F 1 "MXxx-xxxx" V 4155 1602 50  0000 R CNN
F 2 "" H 4200 1850 50  0001 C CNN
F 3 "~" H 4200 1850 50  0001 C CNN
	1    4200 1650
	0    -1   -1   0   
$EndComp
$Comp
L power:+3V3 #PWR?
U 1 1 5F92756B
P 4200 1400
F 0 "#PWR?" H 4200 1250 50  0001 C CNN
F 1 "+3V3" H 4215 1573 50  0000 C CNN
F 2 "" H 4200 1400 50  0001 C CNN
F 3 "" H 4200 1400 50  0001 C CNN
	1    4200 1400
	1    0    0    -1  
$EndComp
Wire Wire Line
	4200 1400 4200 1450
Wire Wire Line
	4200 1850 4200 1900
Connection ~ 4200 1900
Wire Wire Line
	4200 1900 4200 1950
$Comp
L power:VBUS #PWR?
U 1 1 5F88BDF9
P 2300 1250
F 0 "#PWR?" H 2300 1100 50  0001 C CNN
F 1 "VBUS" H 2315 1423 50  0000 C CNN
F 2 "" H 2300 1250 50  0001 C CNN
F 3 "" H 2300 1250 50  0001 C CNN
	1    2300 1250
	1    0    0    -1  
$EndComp
Text Label 3850 1900 0    50   ~ 0
BTN1
Wire Wire Line
	3850 1900 4200 1900
Wire Wire Line
	4200 1900 4800 1900
$EndSCHEMATC