EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 4 8
Title "MAX80"
Date "2021-02-22"
Rev "0.01"
Comp "Peter o Per"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L power:+3.3V #PWR018
U 1 1 5CC6327A
P 6050 2500
F 0 "#PWR018" H 6050 2350 50  0001 C CNN
F 1 "+3.3V" H 6065 2673 50  0000 C CNN
F 2 "" H 6050 2500 50  0001 C CNN
F 3 "" H 6050 2500 50  0001 C CNN
	1    6050 2500
	1    0    0    -1  
$EndComp
Wire Wire Line
	5950 2550 5950 2600
Wire Wire Line
	5950 2550 6050 2550
Wire Wire Line
	6050 2550 6050 2500
Connection ~ 5950 2550
NoConn ~ 6350 2600
NoConn ~ 6450 4100
NoConn ~ 6450 4200
NoConn ~ 6450 4400
NoConn ~ 6450 4500
$Comp
L power:GND #PWR016
U 1 1 5CC8B39C
P 5300 2350
F 0 "#PWR016" H 5300 2100 50  0001 C CNN
F 1 "GND" H 5305 2177 50  0000 C CNN
F 2 "" H 5300 2350 50  0001 C CNN
F 3 "" H 5300 2350 50  0001 C CNN
	1    5300 2350
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR012
U 1 1 610EE856
P 4300 3700
F 0 "#PWR012" H 4300 3450 50  0001 C CNN
F 1 "GND" H 4700 3750 50  0000 C CNN
F 2 "" H 4300 3700 50  0001 C CNN
F 3 "" H 4300 3700 50  0001 C CNN
	1    4300 3700
	1    0    0    -1  
$EndComp
NoConn ~ 6450 4600
$Comp
L power:GND #PWR011
U 1 1 610EE854
P 3550 4000
F 0 "#PWR011" H 3550 3750 50  0001 C CNN
F 1 "GND" H 3555 3827 50  0000 C CNN
F 2 "" H 3550 4000 50  0001 C CNN
F 3 "" H 3550 4000 50  0001 C CNN
	1    3550 4000
	1    0    0    -1  
$EndComp
Wire Wire Line
	3550 2700 3550 3000
Wire Wire Line
	3450 2800 3450 3700
Connection ~ 3450 2800
Connection ~ 3550 3800
Wire Wire Line
	3050 2700 3550 2700
Wire Wire Line
	3050 2800 3450 2800
Wire Wire Line
	3050 3700 3450 3700
Wire Wire Line
	3050 3800 3550 3800
Wire Wire Line
	3050 3000 3100 3000
Wire Wire Line
	3050 3600 3100 3600
Wire Wire Line
	3400 3000 3550 3000
Connection ~ 3550 3000
Wire Wire Line
	3550 3000 3550 3600
Wire Wire Line
	3400 3600 3550 3600
Connection ~ 3550 3600
Wire Wire Line
	3550 3600 3550 3800
NoConn ~ 3050 2900
NoConn ~ 3050 3100
NoConn ~ 3050 3400
NoConn ~ 3050 3500
Wire Wire Line
	5850 2600 5850 2550
Wire Wire Line
	5850 2550 5950 2550
Wire Wire Line
	5450 3100 5450 3200
Wire Wire Line
	5300 3200 5300 3300
Wire Wire Line
	5300 3300 5450 3300
$Comp
L power:GND #PWR017
U 1 1 5E671D3E
P 5950 5300
F 0 "#PWR017" H 5950 5050 50  0001 C CNN
F 1 "GND" H 5955 5127 50  0000 C CNN
F 2 "" H 5950 5300 50  0001 C CNN
F 3 "" H 5950 5300 50  0001 C CNN
	1    5950 5300
	1    0    0    -1  
$EndComp
Wire Wire Line
	5950 5200 5950 5300
Wire Wire Line
	6450 3100 6550 3100
Wire Wire Line
	6450 3000 6550 3000
Wire Wire Line
	5450 3000 5450 2900
NoConn ~ 6450 3400
NoConn ~ 6450 3500
NoConn ~ 6450 3700
NoConn ~ 6450 3800
NoConn ~ 6450 4000
NoConn ~ 6450 4700
NoConn ~ 6450 4800
NoConn ~ 6450 4900
NoConn ~ 6450 5000
$Comp
L Interface_USB:CP2102N-A01-GQFN28 U10
U 1 1 5E5D03C7
P 5950 3900
F 0 "U10" H 5400 2800 50  0000 C CNN
F 1 "CP2102N-A01-GQFN28" H 5050 3000 50  0000 C CNN
F 2 "Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm" H 6400 2700 50  0001 L CNN
F 3 "https://www.silabs.com/documents/public/data-sheets/cp2102n-datasheet.pdf" H 6000 3150 50  0001 C CNN
F 4 "C6568" H 5950 3900 50  0001 C CNN "LCSC"
	1    5950 3900
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR013
U 1 1 5E80DB90
P 4500 2950
F 0 "#PWR013" H 4500 2700 50  0001 C CNN
F 1 "GND" H 4505 2777 50  0000 C CNN
F 2 "" H 4500 2950 50  0001 C CNN
F 3 "" H 4500 2950 50  0001 C CNN
	1    4500 2950
	1    0    0    -1  
$EndComp
Connection ~ 5850 2550
Wire Wire Line
	3050 3200 4200 3200
Wire Wire Line
	4300 3600 4300 3700
Wire Wire Line
	4400 3200 5300 3200
Wire Wire Line
	3700 4300 4200 4300
Wire Wire Line
	4400 4300 5050 4300
Wire Wire Line
	5050 4300 5050 3400
Wire Wire Line
	5050 3400 5450 3400
$Comp
L power:GND #PWR015
U 1 1 5E9ECDE8
P 4800 3900
F 0 "#PWR015" H 4800 3650 50  0001 C CNN
F 1 "GND" H 4805 3727 50  0000 C CNN
F 2 "" H 4800 3900 50  0001 C CNN
F 3 "" H 4800 3900 50  0001 C CNN
	1    4800 3900
	1    0    0    -1  
$EndComp
Wire Wire Line
	4800 3800 4800 3900
Wire Wire Line
	3050 3300 3700 3300
Wire Wire Line
	3700 3300 3700 4300
Wire Wire Line
	3450 2800 3800 2800
Wire Wire Line
	3800 3800 3800 2800
Text HLabel 6550 3000 2    50   Input ~ 0
TX0
Text HLabel 6550 3100 2    50   Input ~ 0
RX0
Wire Wire Line
	3550 3800 3550 4000
NoConn ~ 3050 3900
Wire Wire Line
	3800 3800 3900 3800
Wire Wire Line
	4200 3200 4200 3400
Wire Wire Line
	4400 3200 4400 3400
Wire Wire Line
	4200 4300 4200 4200
Wire Wire Line
	4400 4300 4400 4200
Wire Wire Line
	4700 3800 4800 3800
$Comp
L Device:R R7
U 1 1 6114851D
P 5450 2750
F 0 "R7" H 5400 2600 50  0000 C CNN
F 1 "5.1k" V 5550 2750 50  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 5380 2750 50  0001 C CNN
F 3 "~" H 5450 2750 50  0001 C CNN
F 4 "C25905" H 5450 2750 50  0001 C CNN "LCSC"
F 5 "" H 5450 2750 50  0001 C CNN "Supplier"
	1    5450 2750
	-1   0    0    1   
$EndComp
$Comp
L Device:R R6
U 1 1 61148F19
P 3250 3600
F 0 "R6" V 3043 3600 50  0000 C CNN
F 1 "5.1k" V 3134 3600 50  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 3180 3600 50  0001 C CNN
F 3 "~" H 3250 3600 50  0001 C CNN
F 4 "C25905" H 3250 3600 50  0001 C CNN "LCSC"
F 5 "" H 3250 3600 50  0001 C CNN "Supplier"
	1    3250 3600
	0    1    1    0   
$EndComp
$Comp
L Device:R R5
U 1 1 6114B27A
P 3250 3000
F 0 "R5" V 3043 3000 50  0000 C CNN
F 1 "5.1k" V 3134 3000 50  0000 C CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 3180 3000 50  0001 C CNN
F 3 "~" H 3250 3000 50  0001 C CNN
F 4 "C25905" H 3250 3000 50  0001 C CNN "LCSC"
F 5 "" H 3250 3000 50  0001 C CNN "Supplier"
	1    3250 3000
	0    1    1    0   
$EndComp
$Comp
L max80:HRO-TYPE-C-31-M-12 USB1
U 1 1 6114CF45
P 2950 3250
F 0 "USB1" H 2950 4453 60  0000 C CNN
F 1 "HRO-TYPE-C-31-M-12" H 2950 4347 60  0000 C CNN
F 2 "max80:HRO-TYPE-C-31-M-12" H 2950 4241 60  0000 C CNN
F 3 "https://datasheet.lcsc.com/szlcsc/1811131825_Korean-Hroparts-Elec-TYPE-C-31-M-12_C165948.pdf" H 2250 3300 60  0001 C CNN
F 4 "C165948" H 2950 3250 50  0001 C CNN "LCSC"
	1    2950 3250
	1    0    0    -1  
$EndComp
$Comp
L Power_Protection:USBLC6-2SC6 U?
U 1 1 6114F91C
P 4300 3800
AR Path="/6114F91C" Ref="U?"  Part="1" 
AR Path="/5E63B67F/6114F91C" Ref="U?"  Part="1" 
AR Path="/601569F0/6114F91C" Ref="U9"  Part="1" 
F 0 "U9" V 4650 3550 50  0000 R CNN
F 1 "USBLC6-2SC6" V 4750 3600 50  0000 R CNN
F 2 "Package_TO_SOT_SMD:SOT-23-6" H 3550 4200 50  0001 C CNN
F 3 "" H 4500 4150 50  0001 C CNN
F 4 "C7519" H 4300 3800 50  0001 C CNN "LCSC"
	1    4300 3800
	0    -1   -1   0   
$EndComp
$Comp
L Device:Polyfuse F1
U 1 1 611529F7
P 4100 2800
F 0 "F1" V 4000 2800 50  0000 C CNN
F 1 "Polyfuse 1.8A" V 4250 2800 50  0000 C CNN
F 2 "max80:Fuse_1206_3216Metric" H 4150 2600 50  0001 L CNN
F 3 "https://datasheet.lcsc.com/szlcsc/1811141110_TECHFUSE-nSMD020-30V_C69680.pdf" H 4100 2800 50  0001 C CNN
F 4 "C70082" H 2750 1300 50  0001 C CNN "LCSC"
F 5 "" H 2750 1300 50  0001 C CNN "MOUSER"
F 6 "" H 2750 1300 50  0001 C CNN "MPN"
	1    4100 2800
	0    1    1    0   
$EndComp
$Comp
L Device:C_Small C39
U 1 1 61154A99
P 4500 2800
F 0 "C39" H 4350 2850 50  0000 C CNN
F 1 "1uF" H 4350 2700 50  0000 C CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 4538 2650 50  0001 C CNN
F 3 "~" H 4500 2800 50  0001 C CNN
F 4 "C28323" H 3100 1850 50  0001 C CNN "LCSC"
F 5 "" H 3100 1850 50  0001 C CNN "MOUSER"
F 6 "" H 3100 1850 50  0001 C CNN "MPN"
F 7 "" H 4500 2800 50  0001 C CNN "Supplier"
	1    4500 2800
	-1   0    0    -1  
$EndComp
$Comp
L Device:C C40
U 1 1 61156BD2
P 5600 2350
F 0 "C40" V 5348 2350 50  0000 C CNN
F 1 "10uF" V 5439 2350 50  0000 C CNN
F 2 "Capacitor_SMD:C_0805_2012Metric" H 5638 2200 50  0001 C CNN
F 3 "~" H 5600 2350 50  0001 C CNN
F 4 "C15850" H 4200 1400 50  0001 C CNN "LCSC"
F 5 "" H 4200 1400 50  0001 C CNN "MOUSER"
F 6 "" H 4200 1400 50  0001 C CNN "MPN"
F 7 "" H 5600 2350 50  0001 C CNN "Supplier"
	1    5600 2350
	0    1    1    0   
$EndComp
$Comp
L Device:D_Schottky D19
U 1 1 60325B03
P 5150 2200
F 0 "D19" V 5100 1950 50  0000 L CNN
F 1 "MBRA340T" V 5300 1800 50  0000 L CNN
F 2 "Diode_SMD:D_SMA" H 5150 2200 50  0001 C CNN
F 3 "~" H 5150 2200 50  0001 C CNN
F 4 "C26178" H 5150 2200 50  0001 C CNN "LCSC"
	1    5150 2200
	0    1    1    0   
$EndComp
$Comp
L power:+5V #PWR0155
U 1 1 60328821
P 5150 1950
F 0 "#PWR0155" H 5150 1800 50  0001 C CNN
F 1 "+5V" H 5165 2123 50  0000 C CNN
F 2 "" H 5150 1950 50  0001 C CNN
F 3 "" H 5150 1950 50  0001 C CNN
	1    5150 1950
	1    0    0    -1  
$EndComp
Wire Wire Line
	5150 1950 5150 2050
Wire Wire Line
	5150 2350 5150 2600
NoConn ~ 6450 3200
Text HLabel 6550 2800 2    50   Input ~ 0
CTS
Text HLabel 6550 2900 2    50   Input ~ 0
RTS
Wire Wire Line
	6450 2800 6550 2800
Wire Wire Line
	6450 2900 6550 2900
Text HLabel 6550 3300 2    50   Input ~ 0
DTR
Wire Wire Line
	6450 3300 6550 3300
Wire Wire Line
	4500 2900 4500 2950
Wire Wire Line
	3800 2800 3950 2800
Connection ~ 3800 2800
Wire Wire Line
	4250 2800 4350 2800
Wire Wire Line
	4350 2800 4350 2700
Wire Wire Line
	4350 2700 4500 2700
Wire Wire Line
	4500 2700 5150 2700
Connection ~ 4500 2700
Connection ~ 5150 2700
Wire Wire Line
	5150 2700 5150 3100
Wire Wire Line
	5150 3100 5450 3100
Wire Wire Line
	5150 2600 5450 2600
Connection ~ 5150 2600
Wire Wire Line
	5150 2600 5150 2700
Wire Wire Line
	5300 2350 5450 2350
Wire Wire Line
	5750 2350 5850 2350
Wire Wire Line
	5850 2350 5850 2550
$EndSCHEMATC