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tiny-touch.sch
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EESchema Schematic File Version 4
LIBS:tiny-touch-cache
EELAYER 29 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 1 1
Title "Tiny Touch"
Date "2020-07-11"
Rev "1"
Comp "cKeys"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
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F 0 "C5" H 4558 5042 45 0000 L CNN
F 1 "1UF" H 4558 4958 45 0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 4450 5200 20 0001 C CNN
F 3 "" H 4450 4950 50 0001 C CNN
1 4450 4950
1 0 0 -1
$EndComp
$Comp
L SparkFun-Capacitors:1.0UF-0805-25V-_+80_-20%_ C6
U 1 1 5F2A9311
P 4800 4950
F 0 "C6" H 4908 5042 45 0000 L CNN
F 1 "10UF" H 4908 4958 45 0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 4800 5200 20 0001 C CNN
F 3 "" H 4800 4950 50 0001 C CNN
1 4800 4950
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR0116
U 1 1 5F2A9856
P 4800 5450
F 0 "#PWR0116" H 4800 5200 50 0001 C CNN
F 1 "GND" H 4805 5277 50 0000 C CNN
F 2 "" H 4800 5450 50 0001 C CNN
F 3 "" H 4800 5450 50 0001 C CNN
1 4800 5450
1 0 0 -1
$EndComp
Wire Wire Line
3650 5450 4050 5450
Connection ~ 4050 5450
Wire Wire Line
4050 5450 4450 5450
Connection ~ 4450 5450
Wire Wire Line
4450 5450 4800 5450
Wire Wire Line
4800 5050 4800 5450
Connection ~ 4800 5450
Wire Wire Line
3650 5050 4050 5050
Connection ~ 4800 5050
Connection ~ 4050 5050
Wire Wire Line
4050 5050 4450 5050
Connection ~ 4450 5050
Wire Wire Line
4450 5050 4800 5050
Wire Wire Line
3650 4750 4050 4750
Connection ~ 4050 4750
Wire Wire Line
4050 4750 4450 4750
Connection ~ 4450 4750
Wire Wire Line
4450 4750 4800 4750
Wire Wire Line
3450 4700 3450 4750
Wire Wire Line
3450 5150 3650 5150
Connection ~ 3650 5150
Wire Wire Line
3650 5150 4050 5150
Connection ~ 4050 5150
Wire Wire Line
4050 5150 4450 5150
Wire Wire Line
3450 4750 3650 4750
Connection ~ 3450 4750
Wire Wire Line
3450 4750 3450 5150
Connection ~ 3650 4750
$Comp
L SparkFun-Capacitors:1.0UF-0805-25V-_+80_-20%_ C11
U 1 1 5F2ADA6A
P 2200 7450
F 0 "C11" H 2308 7542 45 0000 L CNN
F 1 "4.7nF" H 2308 7458 45 0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2200 7700 20 0001 C CNN
F 3 "" H 2200 7450 50 0001 C CNN
1 2200 7450
1 0 0 -1
$EndComp
Text GLabel 2400 7250 2 50 Input ~ 0
NRST
$Comp
L power:GND #PWR0117
U 1 1 5F2B0CB8
P 1550 7650
F 0 "#PWR0117" H 1550 7400 50 0001 C CNN
F 1 "GND" H 1555 7477 50 0000 C CNN
F 2 "" H 1550 7650 50 0001 C CNN
F 3 "" H 1550 7650 50 0001 C CNN
1 1550 7650
1 0 0 -1
$EndComp
$Comp
L Diode:1N4148 D2
U 1 1 5F2B4382
P 1350 6700
F 0 "D2" H 1350 6484 50 0000 C CNN
F 1 "1N4148" H 1350 6575 50 0000 C CNN
F 2 "Diode_SMD:D_SOD-323_HandSoldering" H 1350 6525 50 0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 1350 6700 50 0001 C CNN
1 1350 6700
-1 0 0 1
$EndComp
$Comp
L SparkFun-Capacitors:1.0UF-0805-25V-_+80_-20%_ C10
U 1 1 5F2B92AB
P 1650 6900
F 0 "C10" H 1758 6992 45 0000 L CNN
F 1 "4.7nF" H 1758 6908 45 0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 1650 7150 20 0001 C CNN
F 3 "" H 1650 6900 50 0001 C CNN
1 1650 6900
1 0 0 -1
$EndComp
$Comp
L Switch:SW_Push SW1
U 1 1 5F2BF5BB
P 950 6700
F 0 "SW1" H 950 6985 50 0000 C CNN
F 1 "SW_Push" H 950 6894 50 0000 C CNN
F 2 "Button_Switch_SMD:SW_Push_1P1T_NO_6x6mm_H9.5mm" H 950 6900 50 0001 C CNN
F 3 "~" H 950 6900 50 0001 C CNN
1 950 6700
1 0 0 -1
$EndComp
Wire Wire Line
1200 6700 1150 6700
Connection ~ 1200 6700
$Comp
L power:+3V3 #PWR0118
U 1 1 5F2C26B1
P 600 6600
F 0 "#PWR0118" H 600 6450 50 0001 C CNN
F 1 "+3V3" H 615 6773 50 0000 C CNN
F 2 "" H 600 6600 50 0001 C CNN
F 3 "" H 600 6600 50 0001 C CNN
1 600 6600
1 0 0 -1
$EndComp
Wire Wire Line
600 6600 600 6700
Wire Wire Line
600 6700 750 6700
Wire Wire Line
1500 6700 1650 6700
$Comp
L power:GND #PWR0119
U 1 1 5F2C9CEF
P 1500 7000
F 0 "#PWR0119" H 1500 6750 50 0001 C CNN
F 1 "GND" V 1505 6872 50 0000 R CNN
F 2 "" H 1500 7000 50 0001 C CNN
F 3 "" H 1500 7000 50 0001 C CNN
1 1500 7000
0 1 1 0
$EndComp
Wire Wire Line
1500 7000 1650 7000
$Comp
L SparkFun-Resistors:RESISTOR0805 R4
U 1 1 5F2CB241
P 2100 6800
F 0 "R4" V 2050 6850 45 0000 L CNN
F 1 "100K" V 2150 6850 45 0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2100 6950 20 0001 C CNN
F 3 "" H 2100 6800 60 0001 C CNN
F 4 " " V 2184 6868 60 0000 L CNN "Field4"
1 2100 6800
0 1 1 0
$EndComp
Wire Wire Line
1650 7000 2100 7000
Connection ~ 1650 7000
Wire Wire Line
1650 6700 1650 6600
Wire Wire Line
1650 6600 2100 6600
Connection ~ 1650 6700
Text GLabel 2350 6600 2 50 Input ~ 0
BOOTO
Wire Wire Line
2100 6600 2350 6600
Connection ~ 2100 6600
$Comp
L SparkFun-Resistors:RESISTOR0805 R3
U 1 1 5F2DF3E1
P 3300 6050
F 0 "R3" H 3250 5850 45 0000 L CNN
F 1 "1M" H 3250 5950 45 0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 3300 6200 20 0001 C CNN
F 3 "" H 3300 6050 60 0001 C CNN
F 4 " " V 3384 6118 60 0000 L CNN "Field4"
1 3300 6050
-1 0 0 1
$EndComp
$Comp
L power:GND #PWR0120
U 1 1 5F2E0BA1
P 3500 6050
F 0 "#PWR0120" H 3500 5800 50 0001 C CNN
F 1 "GND" V 3505 5922 50 0000 R CNN
F 2 "" H 3500 6050 50 0001 C CNN
F 3 "" H 3500 6050 50 0001 C CNN
1 3500 6050
0 -1 -1 0
$EndComp
$Comp
L power:GNDREF #PWR0121
U 1 1 5F2E182F
P 3100 6050
F 0 "#PWR0121" H 3100 5800 50 0001 C CNN
F 1 "GNDREF" V 3105 5922 50 0001 R CNN
F 2 "" H 3100 6050 50 0001 C CNN
F 3 "" H 3100 6050 50 0001 C CNN
1 3100 6050
0 1 1 0
$EndComp
$Comp
L power:GND #PWR0122
U 1 1 5F2E5434
P 3600 6550
F 0 "#PWR0122" H 3600 6300 50 0001 C CNN
F 1 "GND" V 3605 6422 50 0000 R CNN
F 2 "" H 3600 6550 50 0001 C CNN
F 3 "" H 3600 6550 50 0001 C CNN
1 3600 6550
0 -1 -1 0
$EndComp
Text GLabel 3600 6650 2 50 Input ~ 0
VBUS
NoConn ~ 3600 6750
NoConn ~ 3600 7350
$Comp
L power:GNDREF #PWR0123
U 1 1 5F2E7FF3
P 3600 7750
F 0 "#PWR0123" H 3600 7500 50 0001 C CNN
F 1 "GNDREF" V 3605 7622 50 0001 R CNN
F 2 "" H 3600 7750 50 0001 C CNN
F 3 "" H 3600 7750 50 0001 C CNN
1 3600 7750
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR0124
U 1 1 5F2E9126
P 3600 7650
F 0 "#PWR0124" H 3600 7400 50 0001 C CNN
F 1 "GND" V 3605 7522 50 0000 R CNN
F 2 "" H 3600 7650 50 0001 C CNN
F 3 "" H 3600 7650 50 0001 C CNN
1 3600 7650
0 -1 -1 0
$EndComp
Text GLabel 3600 7550 2 50 Input ~ 0
VBUS
$Comp
L power:GND #PWR0125
U 1 1 5F2E9A05
P 4000 7450
F 0 "#PWR0125" H 4000 7200 50 0001 C CNN
F 1 "GND" V 4005 7322 50 0000 R CNN
F 2 "" H 4000 7450 50 0001 C CNN
F 3 "" H 4000 7450 50 0001 C CNN
1 4000 7450
0 -1 -1 0
$EndComp
$Comp
L SparkFun-Resistors:RESISTOR0805 R6
U 1 1 5F2EAECE
P 3800 7450
F 0 "R6" H 3650 7400 45 0000 L CNN
F 1 "5k1" H 3750 7350 45 0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 3800 7600 20 0001 C CNN
F 3 "" H 3800 7450 60 0001 C CNN
F 4 " " V 3884 7518 60 0000 L CNN "Field4"
1 3800 7450
-1 0 0 1
$EndComp
$Comp
L power:GND #PWR0126
U 1 1 5F2F10A6
P 4000 6850
F 0 "#PWR0126" H 4000 6600 50 0001 C CNN
F 1 "GND" V 4005 6722 50 0000 R CNN
F 2 "" H 4000 6850 50 0001 C CNN
F 3 "" H 4000 6850 50 0001 C CNN
1 4000 6850
0 -1 -1 0
$EndComp
$Comp
L SparkFun-Resistors:RESISTOR0805 R5
U 1 1 5F2F10AD
P 3800 6850
F 0 "R5" H 3650 6800 45 0000 L CNN
F 1 "5k1" H 3750 6750 45 0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 3800 7000 20 0001 C CNN
F 3 "" H 3800 6850 60 0001 C CNN
F 4 " " V 3884 6918 60 0000 L CNN "Field4"
1 3800 6850
-1 0 0 1
$EndComp
Wire Wire Line
3600 6950 4350 6950
Wire Wire Line
4350 6950 4350 6500
Wire Wire Line
4350 6500 5200 6500
Wire Wire Line
5200 6500 5200 6650
Wire Wire Line
3600 7050 4400 7050
Wire Wire Line
3600 7250 4350 7250
Wire Wire Line
4350 7250 4350 7850
Wire Wire Line
4350 7850 5000 7850
Wire Wire Line
5000 7850 5000 7650
Wire Wire Line
3600 7150 4400 7150
Wire Wire Line
4400 7150 4400 7750
Wire Wire Line
4400 7750 5200 7750
Wire Wire Line
5200 7750 5200 7650
Text GLabel 5550 7750 2 50 Input ~ 0
D-
Text GLabel 5550 7850 2 50 Input ~ 0
D+
Connection ~ 5000 7850
Connection ~ 5200 7750
Text GLabel 5550 6500 2 50 Input ~ 0
D-
Text GLabel 5550 6600 2 50 Input ~ 0
D+
Wire Wire Line
4400 6600 5000 6600
Wire Wire Line
5000 6600 5000 6650
Wire Wire Line
4400 6600 4400 7050
Wire Wire Line
5000 6600 5550 6600
Connection ~ 5000 6600
Wire Wire Line
5200 6500 5550 6500
Connection ~ 5200 6500
Text GLabel 5600 7150 2 50 Input ~ 0
VBUS
$Comp
L power:GND #PWR0127
U 1 1 5F310272
P 4550 7200
F 0 "#PWR0127" H 4550 6950 50 0001 C CNN
F 1 "GND" H 4555 7027 50 0000 C CNN
F 2 "" H 4550 7200 50 0001 C CNN
F 3 "" H 4550 7200 50 0001 C CNN
1 4550 7200
1 0 0 -1
$EndComp
Wire Wire Line
4550 7200 4550 7150
Wire Wire Line
4550 7150 4600 7150
Wire Wire Line
5200 7750 5550 7750
Wire Wire Line
5000 7850 5550 7850
Text GLabel 4450 6250 0 50 Input ~ 0
VBUS
$Comp
L power:PWR_FLAG #FLG0101
U 1 1 5F3200E0
P 4500 6100
F 0 "#FLG0101" H 4500 6175 50 0001 C CNN
F 1 "PWR_FLAG" H 4500 6273 50 0000 C CNN
F 2 "" H 4500 6100 50 0001 C CNN
F 3 "~" H 4500 6100 50 0001 C CNN
1 4500 6100
1 0 0 -1
$EndComp
$Comp
L power:VCC #PWR0128
U 1 1 5F321746
P 4600 6250
F 0 "#PWR0128" H 4600 6100 50 0001 C CNN
F 1 "VCC" H 4617 6423 50 0000 C CNN
F 2 "" H 4600 6250 50 0001 C CNN
F 3 "" H 4600 6250 50 0001 C CNN
1 4600 6250
1 0 0 -1
$EndComp
$Comp
L power:PWR_FLAG #FLG0102
U 1 1 5F322E8C
P 5200 6100
F 0 "#FLG0102" H 5200 6175 50 0001 C CNN
F 1 "PWR_FLAG" H 5200 6273 50 0000 C CNN
F 2 "" H 5200 6100 50 0001 C CNN
F 3 "~" H 5200 6100 50 0001 C CNN
1 5200 6100
1 0 0 -1
$EndComp
$Comp
L power:+5V #PWR0129
U 1 1 5F323BB6
P 5300 6250
F 0 "#PWR0129" H 5300 6100 50 0001 C CNN
F 1 "+5V" H 5315 6423 50 0000 C CNN
F 2 "" H 5300 6250 50 0001 C CNN
F 3 "" H 5300 6250 50 0001 C CNN
1 5300 6250
1 0 0 -1
$EndComp
$Comp
L Device:Polyfuse PF1
U 1 1 5F32644E
P 4900 6250
F 0 "PF1" V 4675 6250 50 0000 C CNN
F 1 "500mA" V 4766 6250 50 0000 C CNN
F 2 "Fuse:Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder" H 4950 6050 50 0001 L CNN
F 3 "~" H 4900 6250 50 0001 C CNN
1 4900 6250
0 1 1 0
$EndComp
Wire Wire Line
4450 6250 4500 6250
Connection ~ 4600 6250
Wire Wire Line
4600 6250 4750 6250
Wire Wire Line
5050 6250 5200 6250
Wire Wire Line
5200 6100 5200 6250
Connection ~ 5200 6250
Wire Wire Line
5200 6250 5300 6250
Wire Wire Line
4500 6100 4500 6250
Connection ~ 4500 6250
Wire Wire Line
4500 6250 4600 6250
$Comp
L Mechanical:MountingHole_Pad H1
U 1 1 5F2613A8
P 8100 5900
F 0 "H1" V 8100 6050 50 0000 L CNN
F 1 "Pointer_Clip" V 8250 5900 50 0000 L CNN
F 2 "ckeys:microbit-clamp-hole-pad" H 8100 5900 50 0001 C CNN
F 3 "~" H 8100 5900 50 0001 C CNN
1 8100 5900
0 -1 -1 0
$EndComp
$Comp
L Transistor_BJT:DTA114W Q1
U 1 1 5F395F7E
P 1450 7450
F 0 "Q1" H 1638 7496 50 0000 L CNN
F 1 "DTC123J" H 1638 7405 50 0000 L CNN
F 2 "ckeys:SOT65P210X100-3N" H 1450 7450 50 0001 L CNN
F 3 "" H 1450 7450 50 0001 L CNN
1 1450 7450
1 0 0 -1
$EndComp
Wire Wire Line
1550 7650 2200 7650
Wire Wire Line
2200 7650 2200 7550
Connection ~ 1550 7650
Wire Wire Line
1550 7250 2200 7250
Wire Wire Line
2400 7250 2200 7250
Connection ~ 2200 7250
Wire Wire Line
1200 6700 1200 7450
Text GLabel 1550 3900 3 50 Input ~ 0
E2
Text GLabel 1650 3900 3 50 Input ~ 0
E3
Text GLabel 1750 3900 3 50 Input ~ 0
E4
Text GLabel 1850 3900 3 50 Input ~ 0
E5
Text GLabel 1950 3900 3 50 Input ~ 0
E6
Text GLabel 2150 3900 3 50 Input ~ 0
C13
Text GLabel 2250 3900 3 50 Input ~ 0
C14
Text GLabel 2450 3900 3 50 Input ~ 0
F9
NoConn ~ 2350 3900
Text GLabel 2550 3900 3 50 Input ~ 0
F10
Text GLabel 2650 3900 3 50 Input ~ 0
F0
Text GLabel 2750 3900 3 50 Input ~ 0
F1
Text GLabel 2950 3900 3 50 Input ~ 0
C0
Text GLabel 3050 3900 3 50 Input ~ 0
C1
Text GLabel 3150 3900 3 50 Input ~ 0
C2
Text GLabel 3250 3900 3 50 Input ~ 0
C3
Text GLabel 3350 3900 3 50 Input ~ 0
F2
Text GLabel 3650 3900 3 50 Input ~ 0
F3
Text GLabel 3750 3900 3 50 Input ~ 0
A0
Text GLabel 3850 3900 3 50 Input ~ 0
A1
Text GLabel 3950 3900 3 50 Input ~ 0
A2
Text GLabel 4650 3600 2 50 Input ~ 0
A3
Text GLabel 4650 3300 2 50 Input ~ 0
A4
Text GLabel 4650 3200 2 50 Input ~ 0
A5
Text GLabel 4650 3100 2 50 Input ~ 0
A6
Text GLabel 4650 1500 2 50 Input ~ 0
B10
Text GLabel 4650 1400 2 50 Input ~ 0
B11
Text GLabel 4650 1800 2 50 Input ~ 0
E13
Text GLabel 4650 1700 2 50 Input ~ 0
E14
Text GLabel 4650 1600 2 50 Input ~ 0
E15
Text GLabel 4650 2100 2 50 Input ~ 0
E10
Text GLabel 4650 2000 2 50 Input ~ 0
E11
Text GLabel 4650 1900 2 50 Input ~ 0
E12
Text GLabel 4650 2400 2 50 Input ~ 0
E7
Text GLabel 4650 2300 2 50 Input ~ 0
E8
Text GLabel 4650 2200 2 50 Input ~ 0
E9
Text GLabel 4650 2700 2 50 Input ~ 0
B0
Text GLabel 4650 2600 2 50 Input ~ 0
B1
Text GLabel 4650 2500 2 50 Input ~ 0
B2
Text GLabel 4650 3000 2 50 Input ~ 0
A7
Text GLabel 4650 2900 2 50 Input ~ 0
C4
Text GLabel 4650 2800 2 50 Input ~ 0
C5
Text GLabel 3250 900 1 50 Input ~ 0
D11
Text GLabel 3150 900 1 50 Input ~ 0
D12
Text GLabel 3050 900 1 50 Input ~ 0
D13
Text GLabel 3550 900 1 50 Input ~ 0
D8
Text GLabel 3450 900 1 50 Input ~ 0
D9
Text GLabel 3350 900 1 50 Input ~ 0
D10
Text GLabel 3650 900 1 50 Input ~ 0
B15
Text GLabel 2550 900 1 50 Input ~ 0
C8
Text GLabel 2450 900 1 50 Input ~ 0
C9
Text GLabel 2350 900 1 50 Input ~ 0
A8
Text GLabel 2850 900 1 50 Input ~ 0
D15
Text GLabel 2750 900 1 50 Input ~ 0
C6
Text GLabel 2650 900 1 50 Input ~ 0
C7
Text GLabel 2950 900 1 50 Input ~ 0