EESchema Schematic File Version 4
LIBS:keyboard_pcb-cache
EELAYER 26 0
EELAYER END
$Descr A3 16535 11693
encoding utf-8
Sheet 1 1
Title "ValKey"
Date "2018-03-18"
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Text Label 13900 3900 2    60   ~ 0
row0
Text Label 13900 3450 2    60   ~ 0
row1
Text Label 14900 950  0    60   ~ 0
col0
$Comp
L keyboard_parts:KEYSW K_1
U 1 1 5AA598B3
P 14500 3150
F 0 "K_1" H 14450 3150 60  0000 C CNN
F 1 "KEYSW" H 14500 3050 60  0001 C CNN
F 2 "Keyboard:CHERRY_PCB_100H" H 14500 3150 60  0001 C CNN
F 3 "" H 14500 3150 60  0000 C CNN
	1    14500 3150
	1    0    0    -1  
$EndComp
$Comp
L Device:D D_1
U 1 1 5AA598BA
P 14150 3300
F 0 "D_1" V 14000 3250 60  0000 C CNN
F 1 "D" V 14300 3250 60  0001 C CNN
F 2 "Diodes_SMD:D_SOD-123" H 14150 3300 60  0001 C CNN
F 3 "1N4148WTPMSCT-ND" H 14150 3300 60  0001 C CNN
	1    14150 3300
	0    -1   -1   0   
$EndComp
Wire Wire Line
	14800 3150 14900 3150
Wire Wire Line
	13900 3450 14150 3450
Wire Wire Line
	14150 3150 14200 3150
$Comp
L keyboard_parts:KEYSW K_2
U 1 1 5AA59B0B
P 14500 3600
F 0 "K_2" H 14450 3600 60  0000 C CNN
F 1 "KEYSW" H 14500 3500 60  0001 C CNN
F 2 "Keyboard:CHERRY_PCB_100H" H 14500 3600 60  0001 C CNN
F 3 "" H 14500 3600 60  0000 C CNN
	1    14500 3600
	1    0    0    -1  
$EndComp
$Comp
L Device:D D_2
U 1 1 5AA59B12
P 14150 3750
F 0 "D_2" V 14000 3700 60  0000 C CNN
F 1 "D" V 14300 3700 60  0001 C CNN
F 2 "Diodes_SMD:D_SOD-123" H 14150 3750 60  0001 C CNN
F 3 "~" H 14150 3750 60  0001 C CNN
	1    14150 3750
	0    -1   -1   0   
$EndComp
Wire Wire Line
	14800 3600 14900 3600
Wire Wire Line
	14150 3600 14200 3600
Wire Wire Line
	13900 3900 14150 3900
Wire Wire Line
	14900 3150 14900 3600
$Comp
L Connector_Specialized:USB_B_Micro J2
U 1 1 5B6855D1
P 13500 7050
F 0 "J2" H 13555 7517 50  0000 C CNN
F 1 "USB_A" H 13555 7426 50  0000 C CNN
F 2 "Connectors_USB:USB_Micro-B_Wuerth-629105150521_CircularHoles" H 13650 7000 50  0001 C CNN
F 3 "609-4613-1-ND" H 13650 7000 50  0001 C CNN
	1    13500 7050
	-1   0    0    1   
$EndComp
$Comp
L Device:R R2
U 1 1 5B7710FD
P 13050 7050
F 0 "R2" V 12843 7050 50  0000 C CNN
F 1 "22" V 12934 7050 50  0000 C CNN
F 2 "Resistors_SMD:R_1206" V 12980 7050 50  0001 C CNN
F 3 "RMCF0603JT22R0CT-ND" H 13050 7050 50  0001 C CNN
	1    13050 7050
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R3
U 1 1 5B771434
P 13050 6950
F 0 "R3" V 12843 6950 50  0000 C CNN
F 1 "22" V 12934 6950 50  0000 C CNN
F 2 "Resistors_SMD:R_1206" V 12980 6950 50  0001 C CNN
F 3 "RMCF0603JT22R0CT-ND" H 13050 6950 50  0001 C CNN
	1    13050 6950
	0    -1   -1   0   
$EndComp
$Comp
L Device:CP C6
U 1 1 5B92ED0B
P 2500 1850
F 0 "C6" H 2615 1896 50  0000 L CNN
F 1 "100nF" H 2615 1805 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 2538 1700 50  0001 C CNN
F 3 "1276-1511-1-ND" H 2500 1850 50  0001 C CNN
	1    2500 1850
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C7
U 1 1 5B92EF85
P 2800 1850
F 0 "C7" H 2915 1896 50  0000 L CNN
F 1 "100nF" H 2915 1805 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 2838 1700 50  0001 C CNN
F 3 "1276-1511-1-ND" H 2800 1850 50  0001 C CNN
	1    2800 1850
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C8
U 1 1 5B92F1FC
P 3100 1850
F 0 "C8" H 3215 1896 50  0000 L CNN
F 1 "100nF" H 3215 1805 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 3138 1700 50  0001 C CNN
F 3 "1276-1511-1-ND" H 3100 1850 50  0001 C CNN
	1    3100 1850
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C9
U 1 1 5B92F482
P 3400 1850
F 0 "C9" H 3515 1896 50  0000 L CNN
F 1 "100nF" H 3515 1805 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 3438 1700 50  0001 C CNN
F 3 "1276-1511-1-ND" H 3400 1850 50  0001 C CNN
	1    3400 1850
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR013
U 1 1 5BC192AB
P 13550 6650
F 0 "#PWR013" H 13550 6400 50  0001 C CNN
F 1 "GND" H 13555 6477 50  0000 C CNN
F 2 "" H 13550 6650 50  0001 C CNN
F 3 "" H 13550 6650 50  0001 C CNN
	1    13550 6650
	-1   0    0    1   
$EndComp
Wire Wire Line
	14900 3150 14900 950 
Connection ~ 14900 3150
Wire Wire Line
	2500 1600 2500 1700
Connection ~ 2500 1700
Wire Wire Line
	2500 1700 2800 1700
Connection ~ 2800 1700
Wire Wire Line
	2800 1700 3100 1700
Connection ~ 3100 1700
Wire Wire Line
	3100 1700 3400 1700
Wire Wire Line
	3400 2000 3100 2000
Connection ~ 3100 2000
Wire Wire Line
	3100 2000 2800 2000
Connection ~ 2800 2000
Wire Wire Line
	2800 2000 2500 2000
Connection ~ 2500 2000
Wire Wire Line
	2500 2000 2500 2100
$Comp
L power:GND #PWR010
U 1 1 5B92E6C0
P 2500 2100
F 0 "#PWR010" H 2500 1850 50  0001 C CNN
F 1 "GND" H 2505 1927 50  0000 C CNN
F 2 "" H 2500 2100 50  0001 C CNN
F 3 "" H 2500 2100 50  0001 C CNN
	1    2500 2100
	1    0    0    -1  
$EndComp
Text Label 12700 7050 2    50   ~ 0
D+
Text Label 12700 6950 2    50   ~ 0
D-
Text Label 13200 7050 2    50   ~ 0
Du+
Text Label 13200 6950 2    50   ~ 0
Du-
NoConn ~ 13200 6850
Wire Wire Line
	13200 7250 12950 7250
Wire Wire Line
	13550 6650 13500 6650
Connection ~ 13550 6650
Wire Wire Line
	13600 6650 13550 6650
Wire Wire Line
	7850 3950 7850 3700
$Comp
L power:+3.3V #PWR011
U 1 1 5B4E81C9
P 7850 3700
F 0 "#PWR011" H 7850 3550 50  0001 C CNN
F 1 "+3.3V" H 7865 3873 50  0000 C CNN
F 2 "" H 7850 3700 50  0001 C CNN
F 3 "" H 7850 3700 50  0001 C CNN
	1    7850 3700
	1    0    0    -1  
$EndComp
Wire Wire Line
	7850 3700 7950 3700
Wire Wire Line
	7950 3700 7950 3950
Connection ~ 7850 3700
Wire Wire Line
	7950 3700 8050 3700
Wire Wire Line
	8050 3700 8050 3950
Connection ~ 7950 3700
Wire Wire Line
	8050 3700 8150 3700
Wire Wire Line
	8150 3700 8150 3950
Connection ~ 8050 3700
$Comp
L power:GND #PWR014
U 1 1 5B4EEF7A
P 8300 7800
F 0 "#PWR014" H 8300 7550 50  0001 C CNN
F 1 "GND" V 8305 7672 50  0000 R CNN
F 2 "" H 8300 7800 50  0001 C CNN
F 3 "" H 8300 7800 50  0001 C CNN
	1    8300 7800
	0    -1   -1   0   
$EndComp
$Comp
L Connector_Generic:Conn_01x08 J1
U 1 1 5B4FB626
P 11200 1200
F 0 "J1" H 11280 1192 50  0000 L CNN
F 1 "Conn_01x08" H 11280 1101 50  0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical" H 11200 1200 50  0001 C CNN
F 3 "~" H 11200 1200 50  0001 C CNN
	1    11200 1200
	1    0    0    -1  
$EndComp
$Comp
L power:+3V3 #PWR01
U 1 1 5B4FB89F
P 10200 900
F 0 "#PWR01" H 10200 750 50  0001 C CNN
F 1 "+3V3" V 10215 1028 50  0000 L CNN
F 2 "" H 10200 900 50  0001 C CNN
F 3 "" H 10200 900 50  0001 C CNN
	1    10200 900 
	0    -1   -1   0   
$EndComp
Text Label 11000 1000 2    50   ~ 0
SWCLK
Text Label 11000 1100 2    50   ~ 0
SWDIO
Text Label 9950 1300 2    50   ~ 0
NRST
$Comp
L Device:CP C5
U 1 1 5B4FD94A
P 10250 1450
F 0 "C5" H 10368 1496 50  0000 L CNN
F 1 "100nF" H 10368 1405 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 10288 1300 50  0001 C CNN
F 3 "~" H 10250 1450 50  0001 C CNN
	1    10250 1450
	1    0    0    -1  
$EndComp
Connection ~ 10250 1300
Text Label 11000 1500 2    50   ~ 0
USART_TX
Text Label 11000 1600 2    50   ~ 0
USART_RX
Text Label 4350 4750 2    50   ~ 0
BOOT0
$Comp
L Switch:SW_Push SW1
U 1 1 5B4FE539
P 8700 1100
F 0 "SW1" H 8700 1385 50  0000 C CNN
F 1 "SW_Push" H 8700 1294 50  0000 C CNN
F 2 "Buttons_Switches_SMD:SW_DIP_x1_W5.08mm_Slide_Copal_CHS-A" H 8700 1100 50  0001 C CNN
F 3 "" H 8700 1100 50  0001 C CNN
	1    8700 1100
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR04
U 1 1 5B4FE697
P 8400 1100
F 0 "#PWR04" H 8400 950 50  0001 C CNN
F 1 "+5V" V 8415 1228 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
	0    -1   -1   0   
$EndComp
Text Label 9200 1100 0    50   ~ 0
BOOT0
$Comp
L Device:R R1
U 1 1 5B4FF834
P 9050 1250
F 0 "R1" H 9120 1296 50  0000 L CNN
F 1 "220" H 9120 1205 50  0000 L CNN
F 2 "Resistors_SMD:R_1206" V 8980 1250 50  0001 C CNN
F 3 "~" H 9050 1250 50  0001 C CNN
	1    9050 1250
	1    0    0    -1  
$EndComp
Connection ~ 9050 1100
Wire Wire Line
	9050 1100 9200 1100
Wire Wire Line
	8900 1100 9050 1100
Wire Wire Line
	8500 1100 8400 1100
$Comp
L Device:CP C4
U 1 1 5B516D3B
P 5800 1350
F 0 "C4" H 5918 1396 50  0000 L CNN
F 1 "10uF" H 5918 1305 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 5838 1200 50  0001 C CNN
F 3 "~" H 5800 1350 50  0001 C CNN
	1    5800 1350
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C3
U 1 1 5B516DCD
P 5450 1350
F 0 "C3" H 5568 1396 50  0000 L CNN
F 1 "33pF" H 5568 1305 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 5488 1200 50  0001 C CNN
F 3 "~" H 5450 1350 50  0001 C CNN
	1    5450 1350
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR02
U 1 1 5B51BFA6
P 5450 1000
F 0 "#PWR02" H 5450 850 50  0001 C CNN
F 1 "+5V" H 5465 1173 50  0000 C CNN
F 2 "" H 5450 1000 50  0001 C CNN
F 3 "" H 5450 1000 50  0001 C CNN
	1    5450 1000
	1    0    0    -1  
$EndComp
Wire Wire Line
	5450 1500 5800 1500
$Comp
L Device:CP C1
U 1 1 5B520357
P 7300 1250
F 0 "C1" H 7418 1296 50  0000 L CNN
F 1 "33pF" H 7418 1205 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 7338 1100 50  0001 C CNN
F 3 "~" H 7300 1250 50  0001 C CNN
	1    7300 1250
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C2
U 1 1 5B5203E5
P 7650 1250
F 0 "C2" H 7768 1296 50  0000 L CNN
F 1 "10uF" H 7768 1205 50  0000 L CNN
F 2 "Capacitor_SMD:C_1206_3216Metric" H 7688 1100 50  0001 C CNN
F 3 "~" H 7650 1250 50  0001 C CNN
	1    7650 1250
	1    0    0    -1  
$EndComp
Wire Wire Line
	7300 1000 7300 1100
Wire Wire Line
	7300 1000 7650 1000
Wire Wire Line
	7650 1000 7650 1100
$Comp
L power:+3.3V #PWR03
U 1 1 5B52B922
P 7650 1000
F 0 "#PWR03" H 7650 850 50  0001 C CNN
F 1 "+3.3V" H 7665 1173 50  0000 C CNN
F 2 "" H 7650 1000 50  0001 C CNN
F 3 "" H 7650 1000 50  0001 C CNN
	1    7650 1000
	1    0    0    -1  
$EndComp
Connection ~ 7650 1000
$Comp
L power:GND #PWR09
U 1 1 5B52FD37
P 10250 1700
F 0 "#PWR09" H 10250 1450 50  0001 C CNN
F 1 "GND" H 10255 1527 50  0000 C CNN
F 2 "" H 10250 1700 50  0001 C CNN
F 3 "" H 10250 1700 50  0001 C CNN
	1    10250 1700
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR05
U 1 1 5B52FD9B
P 9050 1400
F 0 "#PWR05" H 9050 1150 50  0001 C CNN
F 1 "GND" H 9055 1227 50  0000 C CNN
F 2 "" H 9050 1400 50  0001 C CNN
F 3 "" H 9050 1400 50  0001 C CNN
	1    9050 1400
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR08
U 1 1 5B52FDFF
P 6800 1600
F 0 "#PWR08" H 6800 1350 50  0001 C CNN
F 1 "GND" H 6805 1427 50  0000 C CNN
F 2 "" H 6800 1600 50  0001 C CNN
F 3 "" H 6800 1600 50  0001 C CNN
	1    6800 1600
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR012
U 1 1 5B5307D1
P 12950 7650
F 0 "#PWR012" H 12950 7500 50  0001 C CNN
F 1 "+5V" H 12965 7823 50  0000 C CNN
F 2 "" H 12950 7650 50  0001 C CNN
F 3 "" H 12950 7650 50  0001 C CNN
	1    12950 7650
	-1   0    0    1   
$EndComp
$Comp
L power:+3.3V #PWR07
U 1 1 5B5376AA
P 2500 1600
F 0 "#PWR07" H 2500 1450 50  0001 C CNN
F 1 "+3.3V" H 2515 1773 50  0000 C CNN
F 2 "" H 2500 1600 50  0001 C CNN
F 3 "" H 2500 1600 50  0001 C CNN
	1    2500 1600
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR06
U 1 1 5B5440C7
P 11000 1400
F 0 "#PWR06" H 11000 1150 50  0001 C CNN
F 1 "GND" V 11005 1272 50  0000 R CNN
F 2 "" H 11000 1400 50  0001 C CNN
F 3 "" H 11000 1400 50  0001 C CNN
	1    11000 1400
	0    1    1    0   
$EndComp
Wire Wire Line
	10200 900  11000 900 
Wire Wire Line
	10250 1300 11000 1300
Text Label 11750 7250 0    50   ~ 0
SWCLK
Text Label 11750 7150 0    50   ~ 0
SWDIO
Text Label 11750 6750 0    50   ~ 0
USART_TX
Text Label 11750 6850 0    50   ~ 0
USART_RX
Wire Wire Line
	5450 1000 5450 1200
Connection ~ 5450 1000
Connection ~ 7300 1000
Wire Wire Line
	5800 1500 6600 1500
Wire Wire Line
	6800 1500 6800 1600
Connection ~ 5800 1500
Wire Wire Line
	6600 1400 6600 1500
Connection ~ 6600 1500
Wire Wire Line
	6600 1500 6800 1500
Wire Wire Line
	7300 1400 7300 1500
Wire Wire Line
	7300 1500 6800 1500
Connection ~ 6800 1500
Wire Wire Line
	7300 1500 7650 1500
Wire Wire Line
	7650 1500 7650 1400
Connection ~ 7300 1500
Text Label 4350 4550 2    50   ~ 0
NRST
$Comp
L Switch:SW_Push SW2
U 1 1 5B56CB24
P 10050 1500
F 0 "SW2" V 10096 1452 50  0000 R CNN
F 1 "SW_Push" V 10005 1452 50  0000 R CNN
F 2 "Buttons_Switches_SMD:SW_DIP_x1_W5.08mm_Slide_Copal_CHS-A" H 10050 1700 50  0001 C CNN
F 3 "" H 10050 1700 50  0001 C CNN
	1    10050 1500
	0    -1   -1   0   
$EndComp
Wire Wire Line
	9950 1300 10050 1300
Wire Wire Line
	10050 1300 10250 1300
Connection ~ 10050 1300
Wire Wire Line
	10050 1700 10250 1700
Wire Wire Line
	10250 1600 10250 1700
Connection ~ 10250 1700
$Comp
L Regulator_Linear:AP2204K-3.3 U1
U 1 1 5B572DFA
P 6600 1100
F 0 "U1" H 6600 1442 50  0000 C CNN
F 1 "AP2204K-3.3" H 6600 1351 50  0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-23-5" H 6600 1425 50  0001 C CNN
F 3 "https://www.diodes.com/assets/Datasheets/AP2204.pdf" H 6600 1200 50  0001 C CNN
	1    6600 1100
	1    0    0    -1  
$EndComp
Wire Wire Line
	5450 1000 5800 1000
Wire Wire Line
	6300 1100 6150 1100
Wire Wire Line
	6150 1100 6150 1000
Connection ~ 6150 1000
Wire Wire Line
	6150 1000 6300 1000
Wire Wire Line
	6900 1000 7300 1000
NoConn ~ 4350 4950
NoConn ~ 4350 5150
NoConn ~ 4350 5250
NoConn ~ 4350 5450
NoConn ~ 4350 5550
NoConn ~ 4350 5650
NoConn ~ 4350 6050
NoConn ~ 4350 6150
NoConn ~ 4350 6250
NoConn ~ 4350 6350
NoConn ~ 4350 6450
NoConn ~ 4350 6550
NoConn ~ 4350 6650
NoConn ~ 4350 6750
NoConn ~ 4350 6850
NoConn ~ 4350 6950
$Comp
L MCU_ST_STM32:STM32L053C6Tx U2
U 1 1 5B4FB57A
P 8050 5850
F 0 "U2" H 8025 7828 50  0000 C CNN
F 1 "STM32L053C6Tx" H 8025 7737 50  0000 C CNN
F 2 "Package_QFP:LQFP-48_7x7mm_P0.5mm" H 8050 5850 50  0000 C TNN
F 3 "~" H 9150 6950 50  0001 C CNN
	1    8050 5850
	1    0    0    -1  
$EndComp
NoConn ~ 4350 7050
NoConn ~ 4350 7150
NoConn ~ 4350 7250
NoConn ~ 4350 7350
NoConn ~ 11750 5950
NoConn ~ 11750 6050
NoConn ~ 11750 6150
NoConn ~ 11750 6250
NoConn ~ 11750 6350
NoConn ~ 11750 6450
NoConn ~ 11750 6550
NoConn ~ 11750 6650
NoConn ~ 11750 7350
NoConn ~ 11000 1200
Wire Wire Line
	7850 7800 7950 7800
Wire Wire Line
	8150 7800 8150 7750
Connection ~ 8150 7800
Wire Wire Line
	8150 7800 8300 7800
Wire Wire Line
	8050 7750 8050 7800
Connection ~ 8050 7800
Wire Wire Line
	8050 7800 8150 7800
Wire Wire Line
	7950 7750 7950 7800
Connection ~ 7950 7800
Wire Wire Line
	7950 7800 8050 7800
Wire Wire Line
	7850 7750 7850 7800
Wire Wire Line
	11750 7050 12900 7050
Wire Wire Line
	11750 6950 12900 6950
Wire Wire Line
	12950 7250 12950 7650
Text Label 4350 5850 2    50   ~ 0
row0
Text Label 4350 5950 2    50   ~ 0
row1
Text Label 11750 5850 0    50   ~ 0
col0
Wire Wire Line
	5800 1200 5800 1000
Connection ~ 5800 1000
Wire Wire Line
	5800 1000 6150 1000
$EndSCHEMATC