EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 4 5
Title "BMS 8S50 IC"
Date "2021-02-13"
Rev "0.2"
Comp "Libre Solar Technologies GmbH"
Comment1 "Website: https://libre.solar"
Comment2 "Author: Martin Jäger"
Comment3 "License: Creative Commons Attribution-ShareAlike 4.0 International"
Comment4 ""
$EndDescr
$Comp
L power:GND #PWR052
U 1 1 58A8D5E6
P 5100 4900
F 0 "#PWR052" H 5100 4650 50  0001 C CNN
F 1 "GND" H 5100 4750 50  0000 C CNN
F 2 "" H 5100 4900 50  0000 C CNN
F 3 "" H 5100 4900 50  0000 C CNN
	1    5100 4900
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR053
U 1 1 58A8D6E3
P 5450 4900
F 0 "#PWR053" H 5450 4650 50  0001 C CNN
F 1 "GND" H 5450 4750 50  0000 C CNN
F 2 "" H 5450 4900 50  0000 C CNN
F 3 "" H 5450 4900 50  0000 C CNN
	1    5450 4900
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR054
U 1 1 58A8D77B
P 5800 4900
F 0 "#PWR054" H 5800 4650 50  0001 C CNN
F 1 "GND" H 5800 4750 50  0000 C CNN
F 2 "" H 5800 4900 50  0000 C CNN
F 3 "" H 5800 4900 50  0000 C CNN
	1    5800 4900
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR055
U 1 1 58A8D813
P 6150 4900
F 0 "#PWR055" H 6150 4650 50  0001 C CNN
F 1 "GND" H 6150 4750 50  0000 C CNN
F 2 "" H 6150 4900 50  0000 C CNN
F 3 "" H 6150 4900 50  0000 C CNN
	1    6150 4900
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR056
U 1 1 58A8D8AB
P 1500 2200
F 0 "#PWR056" H 1500 1950 50  0001 C CNN
F 1 "GND" H 1500 2050 50  0000 C CNN
F 2 "" H 1500 2200 50  0000 C CNN
F 3 "" H 1500 2200 50  0000 C CNN
	1    1500 2200
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR057
U 1 1 58A8DF29
P 5100 4500
F 0 "#PWR057" H 5100 4350 50  0001 C CNN
F 1 "+3.3V" H 5100 4640 50  0000 C CNN
F 2 "" H 5100 4500 50  0000 C CNN
F 3 "" H 5100 4500 50  0000 C CNN
	1    5100 4500
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR058
U 1 1 58A8E026
P 5450 4500
F 0 "#PWR058" H 5450 4350 50  0001 C CNN
F 1 "+3.3V" H 5450 4640 50  0000 C CNN
F 2 "" H 5450 4500 50  0000 C CNN
F 3 "" H 5450 4500 50  0000 C CNN
	1    5450 4500
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR059
U 1 1 58A8E0BE
P 5800 4500
F 0 "#PWR059" H 5800 4350 50  0001 C CNN
F 1 "+3.3V" H 5800 4640 50  0000 C CNN
F 2 "" H 5800 4500 50  0000 C CNN
F 3 "" H 5800 4500 50  0000 C CNN
	1    5800 4500
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR060
U 1 1 58A8E156
P 6150 4500
F 0 "#PWR060" H 6150 4350 50  0001 C CNN
F 1 "+3.3V" H 6150 4640 50  0000 C CNN
F 2 "" H 6150 4500 50  0000 C CNN
F 3 "" H 6150 4500 50  0000 C CNN
	1    6150 4500
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR061
U 1 1 58A8F194
P 2700 5200
F 0 "#PWR061" H 2700 4950 50  0001 C CNN
F 1 "GND" H 2700 5050 50  0000 C CNN
F 2 "" H 2700 5200 50  0000 C CNN
F 3 "" H 2700 5200 50  0000 C CNN
	1    2700 5200
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR065
U 1 1 58A918EA
P 9300 5900
F 0 "#PWR065" H 9300 5650 50  0001 C CNN
F 1 "GND" H 9300 5750 50  0000 C CNN
F 2 "" H 9300 5900 50  0000 C CNN
F 3 "" H 9300 5900 50  0000 C CNN
	1    9300 5900
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR066
U 1 1 58A91B30
P 8400 5900
F 0 "#PWR066" H 8400 5650 50  0001 C CNN
F 1 "GND" H 8400 5750 50  0000 C CNN
F 2 "" H 8400 5900 50  0000 C CNN
F 3 "" H 8400 5900 50  0000 C CNN
	1    8400 5900
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR067
U 1 1 58A94580
P 2700 1900
F 0 "#PWR067" H 2700 1750 50  0001 C CNN
F 1 "+3.3V" H 2700 2040 50  0000 C CNN
F 2 "" H 2700 1900 50  0000 C CNN
F 3 "" H 2700 1900 50  0000 C CNN
	1    2700 1900
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR068
U 1 1 58A94885
P 1000 1700
F 0 "#PWR068" H 1000 1550 50  0001 C CNN
F 1 "+3.3V" H 1000 1840 50  0000 C CNN
F 2 "" H 1000 1700 50  0000 C CNN
F 3 "" H 1000 1700 50  0000 C CNN
	1    1000 1700
	1    0    0    -1  
$EndComp
$Comp
L Project:C C32
U 1 1 58AB8568
P 5100 4700
F 0 "C32" H 5120 4770 50  0000 L CNN
F 1 "100n" H 5120 4630 50  0000 L CNN
F 2 "LibreSolar:C_0603_1608" H 5100 4700 50  0001 C CNN
F 3 "" H 5100 4700 50  0000 C CNN
F 4 "Yageo" H 3700 -800 50  0001 C CNN "Manufacturer"
F 5 "CC0603KRX7R9BB104" H 3700 -800 50  0001 C CNN "PartNumber"
	1    5100 4700
	1    0    0    -1  
$EndComp
$Comp
L Project:C C33
U 1 1 58AB8BE5
P 5450 4700
F 0 "C33" H 5470 4770 50  0000 L CNN
F 1 "100n" H 5470 4630 50  0000 L CNN
F 2 "LibreSolar:C_0603_1608" H 5450 4700 50  0001 C CNN
F 3 "" H 5450 4700 50  0000 C CNN
F 4 "Yageo" H 3700 -800 50  0001 C CNN "Manufacturer"
F 5 "CC0603KRX7R9BB104" H 3700 -800 50  0001 C CNN "PartNumber"
	1    5450 4700
	1    0    0    -1  
$EndComp
$Comp
L Project:C C34
U 1 1 58AB8D4F
P 5800 4700
F 0 "C34" H 5820 4770 50  0000 L CNN
F 1 "100n" H 5820 4630 50  0000 L CNN
F 2 "LibreSolar:C_0603_1608" H 5800 4700 50  0001 C CNN
F 3 "" H 5800 4700 50  0000 C CNN
F 4 "Yageo" H 3700 -800 50  0001 C CNN "Manufacturer"
F 5 "CC0603KRX7R9BB104" H 3700 -800 50  0001 C CNN "PartNumber"
	1    5800 4700
	1    0    0    -1  
$EndComp
$Comp
L Project:C C27
U 1 1 58AB8FDB
P 1500 2000
F 0 "C27" H 1525 2075 50  0000 L CNN
F 1 "100n" H 1525 1925 50  0000 L CNN
F 2 "LibreSolar:C_0603_1608" H 1500 2000 50  0001 C CNN
F 3 "" H 1500 2000 50  0000 C CNN
F 4 "Yageo" H -700 600 50  0001 C CNN "Manufacturer"
F 5 "CC0603KRX7R9BB104" H -700 600 50  0001 C CNN "PartNumber"
	1    1500 2000
	1    0    0    -1  
$EndComp
$Comp
L Project:C C35
U 1 1 58AB9291
P 6150 4700
F 0 "C35" H 6170 4770 50  0000 L CNN
F 1 "4.7u" H 6170 4630 50  0000 L CNN
F 2 "LibreSolar:C_0603_1608" H 6150 4700 50  0001 C CNN
F 3 "" H 6150 4700 50  0000 C CNN
F 4 "Murata" H 3700 -800 50  0001 C CNN "Manufacturer"
F 5 "GRM188R61A475KE15D" H 3700 -800 50  0001 C CNN "PartNumber"
F 6 "10V" H 0   200 60  0001 C CNN "Remarks"
	1    6150 4700
	1    0    0    -1  
$EndComp
$Comp
L Project:R R41
U 1 1 58ADF91D
P 8400 5200
F 0 "R41" V 8325 5200 50  0000 C CNN
F 1 "1k" V 8475 5200 50  0000 C CNN
F 2 "LibreSolar:R_0603_1608" H 8400 5200 50  0001 C CNN
F 3 "" H 8400 5200 50  0000 C CNN
F 4 "Yageo" H -1100 300 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071KL" H -1100 300 50  0001 C CNN "PartNumber"
	1    8400 5200
	1    0    0    1   
$EndComp
$Comp
L Project:R R42
U 1 1 58ADFCF1
P 9300 5200
F 0 "R42" V 9230 5200 50  0000 C CNN
F 1 "1k" V 9370 5200 50  0000 C CNN
F 2 "LibreSolar:R_0603_1608" H 9300 5200 50  0001 C CNN
F 3 "" H 9300 5200 50  0000 C CNN
F 4 "Yageo" H -1000 300 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071KL" H -1000 300 50  0001 C CNN "PartNumber"
	1    9300 5200
	1    0    0    1   
$EndComp
$Comp
L Project:D_LED LED2
U 1 1 58AE11BD
P 9300 5600
F 0 "LED2" H 9425 5650 50  0000 L CNN
F 1 "LED" H 9425 5550 50  0000 L CNN
F 2 "LibreSolar:LED_0603_D3.0mm" V 9300 5600 50  0001 C CNN
F 3 "" V 9300 5600 50  0000 C CNN
	1    9300 5600
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR073
U 1 1 58C29FC4
P 4000 6600
F 0 "#PWR073" H 4000 6350 50  0001 C CNN
F 1 "GND" H 4000 6450 50  0000 C CNN
F 2 "" H 4000 6600 50  0000 C CNN
F 3 "" H 4000 6600 50  0000 C CNN
	1    4000 6600
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR074
U 1 1 58C2A17E
P 4000 6250
F 0 "#PWR074" H 4000 6100 50  0001 C CNN
F 1 "+3.3V" H 4000 6390 50  0000 C CNN
F 2 "" H 4000 6250 50  0000 C CNN
F 3 "" H 4000 6250 50  0000 C CNN
	1    4000 6250
	1    0    0    -1  
$EndComp
$Comp
L power:PWR_FLAG #FLG075
U 1 1 58BFF095
P 1900 1700
F 0 "#FLG075" H 1900 1650 50  0001 C CNN
F 1 "PWR_FLAG" H 1900 1900 50  0000 C CNN
F 2 "" H 1900 1700 50  0000 C CNN
F 3 "" H 1900 1700 50  0000 C CNN
	1    1900 1700
	1    0    0    -1  
$EndComp
$Comp
L Project:Conn_01x02 P5
U 1 1 58C4C05C
P 6000 6500
F 0 "P5" H 6000 6650 50  0000 C CNN
F 1 "CONN_01X02" V 6100 6500 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 6000 6500 50  0001 C CNN
F 3 "" H 6000 6500 50  0001 C CNN
	1    6000 6500
	1    0    0    -1  
$EndComp
$Comp
L Project:D_LED LED1
U 1 1 58AE0EA3
P 8400 5600
F 0 "LED1" H 8525 5650 50  0000 L CNN
F 1 "LED" H 8525 5550 50  0000 L CNN
F 2 "LibreSolar:LED_0603_D3.0mm" V 8400 5600 50  0001 C CNN
F 3 "" V 8400 5600 50  0000 C CNN
	1    8400 5600
	1    0    0    -1  
$EndComp
Text Notes 8300 4700 0    100  ~ 0
Status LEDs
Text Notes 2500 1300 0    100  ~ 0
MCU STM32L452
Text Notes 3900 5900 0    100  ~ 0
STM Nucleo SWD and USART
Text Label 3500 4700 2    50   ~ 0
LED1
Text Label 3500 4800 2    50   ~ 0
LED2
Text Label 1400 4200 0    50   ~ 0
USART1_TX
Text Label 1400 4300 0    50   ~ 0
USART1_RX
Text Label 1400 4600 0    50   ~ 0
SWDIO
Text Label 1400 4700 0    50   ~ 0
SWCLK
Text Label 3500 2700 2    50   ~ 0
BOOT0
Text Label 3500 2300 2    50   ~ 0
~RESET
Text Label 4100 6600 0    50   ~ 0
SWDIO
Text Label 4100 6400 0    50   ~ 0
SWCLK
Text Label 5300 6500 0    50   ~ 0
USART1_TX
Text Label 5300 6600 0    50   ~ 0
USART1_RX
Text Label 4100 6700 0    50   ~ 0
~RESET
Text Label 8400 4800 3    50   ~ 0
LED1
Text Label 9300 4800 3    50   ~ 0
LED2
Text HLabel 3500 4000 2    50   BiDi ~ 0
I2C1_SDA
Text HLabel 3500 3900 2    50   Output ~ 0
I2C1_SCL
Text HLabel 3500 3800 2    50   Output ~ 0
SPI1_MOSI
Text HLabel 3500 3700 2    50   Input ~ 0
SPI1_MISO
Text HLabel 3500 3600 2    50   Output ~ 0
SPI1_SCK
Text HLabel 1400 3600 0    50   Input ~ 0
USART2_RX
Text HLabel 1400 3500 0    50   Output ~ 0
USART2_TX
Text HLabel 1400 4800 0    50   Output ~ 0
SSEL
Wire Wire Line
	5450 4500 5450 4600
Wire Wire Line
	5100 4500 5100 4600
Wire Wire Line
	5800 4500 5800 4600
Wire Wire Line
	6150 4600 6150 4500
Wire Wire Line
	3100 2700 3500 2700
Wire Wire Line
	3100 4100 3500 4100
Wire Wire Line
	3100 2900 3500 2900
Wire Wire Line
	3100 4200 3500 4200
Wire Wire Line
	5450 4900 5450 4800
Wire Wire Line
	5100 4900 5100 4800
Wire Wire Line
	5800 4800 5800 4900
Wire Wire Line
	6150 4800 6150 4900
Wire Wire Line
	3100 3900 3500 3900
Wire Wire Line
	3100 4000 3500 4000
Wire Wire Line
	3100 4300 3500 4300
Wire Wire Line
	3100 4400 3500 4400
Wire Wire Line
	8400 5100 8400 4800
Wire Wire Line
	3100 4700 3500 4700
Wire Wire Line
	9300 5100 9300 4800
Wire Wire Line
	3100 4800 3500 4800
Wire Wire Line
	3100 3700 3500 3700
Wire Wire Line
	3100 3800 3500 3800
Wire Wire Line
	3100 3600 3500 3600
Wire Wire Line
	1900 4700 1400 4700
Wire Wire Line
	1900 4600 1400 4600
Wire Wire Line
	1900 4800 1400 4800
Wire Wire Line
	1900 4300 1400 4300
Wire Wire Line
	1900 4200 1400 4200
Wire Wire Line
	1900 3600 1400 3600
Wire Wire Line
	1900 3500 1400 3500
Wire Wire Line
	1900 4400 1400 4400
Wire Wire Line
	1900 4500 1400 4500
Wire Wire Line
	1900 3800 1400 3800
Wire Wire Line
	3100 2300 3500 2300
Wire Wire Line
	5300 6500 5800 6500
Wire Wire Line
	5300 6600 5800 6600
Wire Wire Line
	4000 6300 4400 6300
Wire Wire Line
	4000 6250 4000 6300
Wire Wire Line
	1300 1800 1500 1800
Wire Wire Line
	1500 1800 1500 1900
Wire Wire Line
	2400 1800 2400 2100
Wire Wire Line
	1000 1800 1100 1800
Wire Wire Line
	1000 1800 1000 1700
Wire Wire Line
	1900 1700 1900 1800
Wire Wire Line
	4400 6400 4100 6400
Wire Wire Line
	4400 6600 4100 6600
Wire Wire Line
	4400 6700 4100 6700
Wire Wire Line
	4400 6500 4000 6500
Wire Wire Line
	4000 6500 4000 6600
Wire Wire Line
	3100 4500 3500 4500
Connection ~ 1500 1800
Connection ~ 1900 1800
Wire Wire Line
	2000 6400 1900 6400
Wire Wire Line
	2000 6500 1900 6500
Text Notes 2100 5900 0    100  ~ 0
EEPROM
$Comp
L power:GND #PWR076
U 1 1 58F26CD5
P 3100 6800
F 0 "#PWR076" H 3100 6550 50  0001 C CNN
F 1 "GND" H 3100 6650 50  0000 C CNN
F 2 "" H 3100 6800 50  0000 C CNN
F 3 "" H 3100 6800 50  0000 C CNN
	1    3100 6800
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR077
U 1 1 58F26CE1
P 3100 6200
F 0 "#PWR077" H 3100 6050 50  0001 C CNN
F 1 "+3.3V" H 3100 6340 50  0000 C CNN
F 2 "" H 3100 6200 50  0000 C CNN
F 3 "" H 3100 6200 50  0000 C CNN
	1    3100 6200
	1    0    0    -1  
$EndComp
$Comp
L Project:C C36
U 1 1 58F26CED
P 3100 6500
F 0 "C36" H 3125 6600 50  0000 L CNN
F 1 "100n" H 3125 6400 50  0000 L CNN
F 2 "LibreSolar:C_0603_1608" H 3138 6350 50  0001 C CNN
F 3 "" H 3100 6500 50  0000 C CNN
F 4 "Yageo" H 0   0   60  0001 C CNN "Manufacturer"
F 5 "CC0603KRX7R9BB104" H 0   0   60  0001 C CNN "PartNumber"
	1    3100 6500
	1    0    0    -1  
$EndComp
Text HLabel 3500 4300 2    50   Output ~ 0
I2C2_SCL
Text HLabel 3500 4400 2    50   BiDi ~ 0
I2C2_SDA
Text HLabel 1400 3800 0    50   Input ~ 0
V_EXT
Text HLabel 3500 4500 2    50   Input ~ 0
ALERT_IN
Wire Wire Line
	1900 4100 1400 4100
Text HLabel 1400 4100 0    50   Input ~ 0
SW_POWER
$Comp
L LibreSolar:24AAxx-OT U6
U 1 1 59170C8C
P 2400 6500
AR Path="/59170C8C" Ref="U6"  Part="1" 
AR Path="/58E2D38D/59170C8C" Ref="U6"  Part="1" 
F 0 "U6" H 2400 6865 50  0000 C CNN
F 1 "24AA32" H 2400 6774 50  0000 C CNN
F 2 "LibreSolar:SOT-23-5" H -100 -300 50  0001 C CNN
F 3 "" H -100 350 60  0000 C CNN
F 4 "Microchip" H 0   0   60  0001 C CNN "Manufacturer"
F 5 "24AA32AFT-I/OT" H 0   0   60  0001 C CNN "PartNumber"
	1    2400 6500
	1    0    0    -1  
$EndComp
Wire Wire Line
	2800 6600 2900 6600
Wire Wire Line
	2900 6500 2900 6600
Wire Wire Line
	2900 6700 3100 6700
Wire Wire Line
	3100 6600 3100 6700
Connection ~ 3100 6700
Wire Wire Line
	3100 6200 3100 6300
Wire Wire Line
	2800 6400 2900 6400
Wire Wire Line
	2900 6400 2900 6300
Wire Wire Line
	2900 6300 3100 6300
Connection ~ 3100 6300
Wire Wire Line
	2800 6500 2900 6500
Connection ~ 2900 6600
Text HLabel 1900 6400 0    50   Input ~ 0
I2C2_SCL
Text HLabel 1900 6500 0    50   Input ~ 0
I2C2_SDA
Wire Wire Line
	1500 1800 1900 1800
Wire Wire Line
	1900 1800 2400 1800
Wire Wire Line
	3100 6700 3100 6800
Wire Wire Line
	3100 6300 3100 6400
Wire Wire Line
	2900 6600 2900 6700
$Comp
L LibreSolar:USBLC6-2SC6 D?
U 1 1 5CC357EF
P 8500 1800
AR Path="/58AF4F23/5CC357EF" Ref="D?"  Part="1" 
AR Path="/58E2D38D/5CC357EF" Ref="D10"  Part="1" 
F 0 "D10" H 8250 2150 50  0000 C CNN
F 1 "USBLC6-2SC6" H 8500 1450 50  0000 C CNN
F 2 "LibreSolar:SOT-23-6" H 9150 2150 50  0001 C CNN
F 3 "" H 8250 2150 50  0001 C CNN
F 4 "STMicroelectronics" H 5350 -250 50  0001 C CNN "Manufacturer"
F 5 "USBLC6-2SC6" H 5350 -250 50  0001 C CNN "PartNumber"
F 6 "Alternative: WE-TVS 82400102" H 8500 1800 50  0001 C CNN "Remarks"
	1    8500 1800
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5CC357F6
P 9150 1800
AR Path="/58AF4F23/5CC357F6" Ref="#PWR?"  Part="1" 
AR Path="/58E2D38D/5CC357F6" Ref="#PWR0135"  Part="1" 
F 0 "#PWR0135" H 9150 1550 50  0001 C CNN
F 1 "GND" H 9150 1650 50  0000 C CNN
F 2 "" H 9150 1800 50  0000 C CNN
F 3 "" H 9150 1800 50  0000 C CNN
	1    9150 1800
	0    -1   1    0   
$EndComp
Text Notes 7800 1200 0    100  ~ 0
USB ESD protection
Text HLabel 9100 1600 2    50   BiDi ~ 0
USB_D-
Text HLabel 9100 2000 2    50   BiDi ~ 0
USB_D+
Wire Wire Line
	9000 1600 9100 1600
Wire Wire Line
	9000 2000 9100 2000
Wire Wire Line
	9150 1800 9000 1800
Wire Wire Line
	8000 1600 7600 1600
Wire Wire Line
	7600 2000 8000 2000
$Comp
L power:+3.3V #PWR?
U 1 1 5CCCF213
P 7400 3200
AR Path="/58AF4F23/5CCCF213" Ref="#PWR?"  Part="1" 
AR Path="/58E2D38D/5CCCF213" Ref="#PWR0138"  Part="1" 
F 0 "#PWR0138" H 7400 3050 50  0001 C CNN
F 1 "+3.3V" H 7400 3340 50  0000 C CNN
F 2 "" H 7400 3200 50  0000 C CNN
F 3 "" H 7400 3200 50  0000 C CNN
	1    7400 3200
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5CCCF219
P 7400 3600
AR Path="/58AF4F23/5CCCF219" Ref="#PWR?"  Part="1" 
AR Path="/58E2D38D/5CCCF219" Ref="#PWR0139"  Part="1" 
F 0 "#PWR0139" H 7400 3350 50  0001 C CNN
F 1 "GND" H 7400 3450 50  0000 C CNN
F 2 "" H 7400 3600 50  0000 C CNN
F 3 "" H 7400 3600 50  0000 C CNN
	1    7400 3600
	1    0    0    -1  
$EndComp
$Comp
L Project:C C?
U 1 1 5CCCF221
P 7400 3400
AR Path="/58AF4F23/5CCCF221" Ref="C?"  Part="1" 
AR Path="/58E2D38D/5CCCF221" Ref="C19"  Part="1" 
F 0 "C19" H 7420 3470 50  0000 L CNN
F 1 "100n" H 7420 3330 50  0000 L CNN
F 2 "LibreSolar:C_0603_1608" H 7400 3400 50  0001 C CNN
F 3 "" H 7400 3400 50  0000 C CNN
F 4 "Yageo" H 600 1650 50  0001 C CNN "Manufacturer"
F 5 "CC0603KRX7R9BB104" H 600 1650 50  0001 C CNN "PartNumber"
	1    7400 3400
	1    0    0    -1  
$EndComp
$Comp
L Project:R R?
U 1 1 5CCCF22A
P 9600 3600
AR Path="/58AF4F23/5CCCF22A" Ref="R?"  Part="1" 
AR Path="/58E2D38D/5CCCF22A" Ref="R69"  Part="1" 
F 0 "R69" V 9530 3600 50  0000 C CNN
F 1 "120" V 9670 3600 50  0000 C CNN
F 2 "LibreSolar:R_1206_3216" H 9600 3600 50  0001 C CNN
F 3 "" H 9600 3600 50  0000 C CNN
F 4 "Yageo" H 100 1800 50  0001 C CNN "Manufacturer"
F 5 "RC1206FR-07120RL" H 100 1800 50  0001 C CNN "PartNumber"
	1    9600 3600
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR?
U 1 1 5CCCF231
P 8700 2900
AR Path="/58AF4F23/5CCCF231" Ref="#PWR?"  Part="1" 
AR Path="/58E2D38D/5CCCF231" Ref="#PWR0140"  Part="1" 
F 0 "#PWR0140" H 8700 2750 50  0001 C CNN
F 1 "+3.3V" H 8700 3040 50  0000 C CNN
F 2 "" H 8700 2900 50  0000 C CNN
F 3 "" H 8700 2900 50  0000 C CNN
	1    8700 2900
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5CCCF237
P 8700 3900
AR Path="/58AF4F23/5CCCF237" Ref="#PWR?"  Part="1" 
AR Path="/58E2D38D/5CCCF237" Ref="#PWR0141"  Part="1" 
F 0 "#PWR0141" H 8700 3650 50  0001 C CNN
F 1 "GND" H 8700 3750 50  0000 C CNN
F 2 "" H 8700 3900 50  0000 C CNN
F 3 "" H 8700 3900 50  0000 C CNN
	1    8700 3900
	1    0    0    -1  
$EndComp
Text Notes 8100 2600 0    100  ~ 0
CAN transceiver
Wire Wire Line
	7400 3300 7400 3200
Wire Wire Line
	7400 3600 7400 3500
Wire Wire Line
	9200 3300 9300 3300
Wire Wire Line
	9300 3300 9300 3100
Text HLabel 9700 3100 2    50   Output ~ 0
CAN_H
Text HLabel 9700 3800 2    50   Output ~ 0
CAN_L
$Comp
L Interface_CAN_LIN:TCAN334 U?
U 1 1 5CCCF250
P 8700 3400
AR Path="/58AF4F23/5CCCF250" Ref="U?"  Part="1" 
AR Path="/58E2D38D/5CCCF250" Ref="U2"  Part="1" 
F 0 "U2" H 8350 3750 50  0000 C CNN
F 1 "TCAN334" H 8950 3750 50  0000 C CNN
F 2 "LibreSolar:SOIC-8_3.9x4.9mm_Pitch1.27mm" H 8700 2900 50  0001 C CIN
F 3 "http://www.ti.com/lit/ds/symlink/tcan337.pdf" H 8700 3400 50  0001 C CNN
F 4 "Texas Instruments" H 8700 3400 50  0001 C CNN "Manufacturer"
F 5 "TCAN334DR" H 8700 3400 50  0001 C CNN "PartNumber"
	1    8700 3400
	1    0    0    -1  
$EndComp
Wire Wire Line
	8700 2900 8700 3000
Wire Wire Line
	8700 3800 8700 3900
Wire Wire Line
	7800 3300 8200 3300
Wire Wire Line
	7800 3600 8200 3600
Wire Wire Line
	7800 3200 8200 3200
Text Label 3500 4100 2    50   ~ 0
CAN_RX
Text Label 3500 4200 2    50   ~ 0
CAN_TX
Text Label 3500 2900 2    50   ~ 0
CAN_STB
Text Label 7800 3200 0    50   ~ 0
CAN_TX
Text Label 7800 3300 0    50   ~ 0
CAN_RX
Text Label 7800 3600 0    50   ~ 0
CAN_STB
NoConn ~ 8000 1800
Text Label 1400 4400 0    50   ~ 0
USB_DM
Text Label 1400 4500 0    50   ~ 0
USB_DP
Text Label 7600 1600 0    60   ~ 0
USB_DM
Text Label 7600 2000 0    60   ~ 0
USB_DP
NoConn ~ 8200 3500
Wire Wire Line
	8400 5300 8400 5500
Wire Wire Line
	8400 5700 8400 5900
Wire Wire Line
	9300 5300 9300 5500
Wire Wire Line
	9300 5700 9300 5900
$Comp
L MCU_ST_STM32L4:STM32L452CCUx U3
U 1 1 5CBD30C8
P 2500 3500
F 0 "U3" H 2900 5000 50  0000 C CNN
F 1 "STM32L452CCU6" H 1900 4900 50  0000 C CNN
F 2 "Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm" H 1900 2100 50  0001 R CNN
F 3 "http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00090510.pdf" H 2500 3500 50  0001 C CNN
F 4 "ST Microelectronics" H 2500 3500 50  0001 C CNN "Manufacturer"
F 5 "STM32L452CCU6" H 2500 3500 50  0001 C CNN "PartNumber"
	1    2500 3500
	-1   0    0    -1  
$EndComp
Wire Wire Line
	2300 5000 2300 5100
Wire Wire Line
	2300 5100 2400 5100
Wire Wire Line
	2700 5100 2700 5000
Wire Wire Line
	2600 5000 2600 5100
Connection ~ 2600 5100
Wire Wire Line
	2600 5100 2700 5100
Wire Wire Line
	2500 5000 2500 5100
Connection ~ 2500 5100
Wire Wire Line
	2500 5100 2600 5100
Wire Wire Line
	2400 5000 2400 5100
Connection ~ 2400 5100
Wire Wire Line
	2400 5100 2500 5100
Wire Wire Line
	2700 5100 2700 5200
Connection ~ 2700 5100
Wire Wire Line
	2700 2100 2700 2000
Wire Wire Line
	2600 2100 2600 2000
Wire Wire Line
	2600 2000 2700 2000
Connection ~ 2700 2000
Wire Wire Line
	2700 2000 2700 1900
Wire Wire Line
	2500 2100 2500 2000
Wire Wire Line
	2500 2000 2600 2000
Connection ~ 2600 2000
Wire Wire Line
	2300 2100 2300 2000
Wire Wire Line
	2300 2000 2500 2000
Connection ~ 2500 2000
$Comp
L Project:R R?
U 1 1 5CCCFC01
P 1200 1800
AR Path="/58AF4F23/5CCCFC01" Ref="R?"  Part="1" 
AR Path="/58E2D38D/5CCCFC01" Ref="R71"  Part="1" 
AR Path="/5CCCFC01" Ref="R?"  Part="1" 
F 0 "R71" V 1125 1800 50  0000 C CNN
F 1 "100" V 1275 1800 50  0000 C CNN
F 2 "LibreSolar:R_0603_1608" V 1025 1700 50  0001 C CNN
F 3 "" H 1200 1800 50  0000 C CNN
F 4 "Yageo" H -2700 -1350 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-07100RL" H -2700 -1350 50  0001 C CNN "PartNumber"
	1    1200 1800
	0    1    1    0   
$EndComp
Wire Wire Line
	4900 1700 4900 1800
Wire Wire Line
	5300 1700 5300 1800
Wire Wire Line
	5300 1200 5300 1500
Wire Wire Line
	4900 1200 4900 1500
Text Label 5300 1200 3    50   ~ 0
BOOT0
Text Label 4900 1200 3    50   ~ 0
~RESET
$Comp
L power:GND #PWR072
U 1 1 58AE3CBA
P 5300 1800
F 0 "#PWR072" H 5300 1550 50  0001 C CNN
F 1 "GND" H 5300 1650 50  0000 C CNN
F 2 "" H 5300 1800 50  0000 C CNN
F 3 "" H 5300 1800 50  0000 C CNN
	1    5300 1800
	1    0    0    -1  
$EndComp
$Comp
L Project:R R35
U 1 1 58AE2797
P 5300 1600
F 0 "R35" V 5230 1600 50  0000 C CNN
F 1 "1M" V 5370 1600 50  0000 C CNN
F 2 "LibreSolar:R_0603_1608" H 5300 1600 50  0001 C CNN
F 3 "" H 5300 1600 50  0000 C CNN
F 4 "Yageo" H -3450 -475 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071ML" H -3450 -475 50  0001 C CNN "PartNumber"
	1    5300 1600
	1    0    0    1   
$EndComp
$Comp
L Project:C C31
U 1 1 58AB7F87
P 4900 1600
F 0 "C31" H 4920 1670 50  0000 L CNN
F 1 "100n" H 4920 1530 50  0000 L CNN
F 2 "LibreSolar:C_0603_1608" H 4900 1600 50  0001 C CNN
F 3 "" H 4900 1600 50  0000 C CNN
F 4 "Yageo" H -2350 -1300 50  0001 C CNN "Manufacturer"
F 5 "CC0603KRX7R9BB104" H -2350 -1300 50  0001 C CNN "PartNumber"
	1    4900 1600
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR069
U 1 1 58AB7879
P 4900 1800
F 0 "#PWR069" H 4900 1550 50  0001 C CNN
F 1 "GND" H 4900 1650 50  0000 C CNN
F 2 "" H 4900 1800 50  0000 C CNN
F 3 "" H 4900 1800 50  0000 C CNN
	1    4900 1800
	1    0    0    -1  
$EndComp
Wire Wire Line
	3100 2600 3900 2600
Wire Wire Line
	3900 2600 3900 2700
Wire Wire Line
	3100 2500 4600 2500
Wire Wire Line
	4600 2700 4600 2500
Wire Wire Line
	4500 2700 4600 2700
Wire Wire Line
	3900 2700 4100 2700
$Comp
L power:GND #PWR062
U 1 1 58A8F584
P 4300 3000
F 0 "#PWR062" H 4300 2750 50  0001 C CNN
F 1 "GND" H 4300 2850 50  0000 C CNN
F 2 "" H 4300 3000 50  0000 C CNN
F 3 "" H 4300 3000 50  0000 C CNN
	1    4300 3000
	1    0    0    -1  
$EndComp
$Comp
L Project:Resonator Y1
U 1 1 58C556C6
P 4300 2700
F 0 "Y1" H 4100 2650 50  0000 C CNN
F 1 "8MHz" H 4500 2650 50  0000 L CNN
F 2 "LibreSolar:Resonator_Murata_CSTNE" H 4300 2700 50  0001 C CNN
F 3 "" H 4300 2700 50  0000 C CNN
F 4 "Murata" H -800 -1650 50  0001 C CNN "Manufacturer"
F 5 "CSTNE8M00GH5C000R0" H -800 -1650 50  0001 C CNN "PartNumber"
F 6 "0.07%" H 4600 2550 50  0000 C CNN "Remarks"
	1    4300 2700
	1    0    0    -1  
$EndComp
Wire Wire Line
	4300 2900 4300 3000
Text Notes 4500 3150 0    50   ~ 0
Tight tolerance\nfor CAN interface
$Comp
L LibreSolar:ST_Nucleo_SWD_5p SWD1
U 1 1 5CDB37B8
P 4700 6500
F 0 "SWD1" H 4500 6850 50  0000 L CNN
F 1 "ST_Nucleo_SWD_5p" H 4500 6150 50  0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical" H 4700 6050 30  0001 C CIN
F 3 "" H 4850 6550 60  0000 C CNN
	1    4700 6500
	1    0    0    -1  
$EndComp
$Comp
L Project:R R?
U 1 1 5D004E53
P 6200 3200
AR Path="/58ACC63A/5D004E53" Ref="R?"  Part="1" 
AR Path="/5C64ED50/5D004E53" Ref="R?"  Part="1" 
AR Path="/58E2D38D/5D004E53" Ref="R56"  Part="1" 
F 0 "R56" V 6130 3200 50  0000 C CNN
F 1 "2.2k" V 6270 3200 50  0000 C CNN
F 2 "LibreSolar:R_0603_1608" H 6200 3200 50  0001 C CNN
F 3 "" H 6200 3200 50  0000 C CNN
F 4 "Yageo" H 1050 -2150 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-072K2L" H 1050 -2150 50  0001 C CNN "PartNumber"
	1    6200 3200
	1    0    0    1   
$EndComp
$Comp
L Project:R R?
U 1 1 5D004E5B
P 5900 3200
AR Path="/58ACC63A/5D004E5B" Ref="R?"  Part="1" 
AR Path="/5C64ED50/5D004E5B" Ref="R?"  Part="1" 
AR Path="/58E2D38D/5D004E5B" Ref="R55"  Part="1" 
F 0 "R55" V 5830 3200 50  0000 C CNN
F 1 "2.2k" V 5970 3200 50  0000 C CNN
F 2 "LibreSolar:R_0603_1608" H 5900 3200 50  0001 C CNN
F 3 "" H 5900 3200 50  0000 C CNN
F 4 "Yageo" H 1100 -2150 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-072K2L" H 1100 -2150 50  0001 C CNN "PartNumber"
	1    5900 3200
	1    0    0    1   
$EndComp
Wire Wire Line
	5900 3300 5900 3400
Wire Wire Line
	6200 3300 6200 3400
Text HLabel 6200 3400 3    50   BiDi ~ 0
I2C2_SDA
Text HLabel 5900 3400 3    50   Input ~ 0
I2C2_SCL
Wire Wire Line
	5900 2900 6000 2900
Wire Wire Line
	5900 2900 5900 3100
Wire Wire Line
	6200 2900 6200 3100
Text Label 6000 2300 3    50   ~ 0
I2C2_PULLUP
Wire Wire Line
	6000 2300 6000 2900
Connection ~ 6000 2900
Wire Wire Line
	6000 2900 6200 2900
Text Label 3700 3500 2    50   ~ 0
I2C2_PULLUP
Wire Wire Line
	3100 3500 3700 3500
NoConn ~ 3100 3000
NoConn ~ 3100 3100
NoConn ~ 3100 3300
NoConn ~ 3100 3400
NoConn ~ 1900 3300
NoConn ~ 1900 3400
NoConn ~ 1900 3700
NoConn ~ 1900 3900
NoConn ~ 1900 4000
NoConn ~ 3100 4600
Wire Wire Line
	1500 2100 1500 2200
$Comp
L Device:Jumper_NC_Small JP3
U 1 1 60411820
P 9600 3300
F 0 "JP3" V 9554 3374 50  0000 L CNN
F 1 "Jumper_NC_Small" V 9645 3374 50  0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 9600 3300 50  0001 C CNN
F 3 "~" H 9600 3300 50  0001 C CNN
	1    9600 3300
	0    1    1    0   
$EndComp
Wire Wire Line
	9300 3100 9600 3100
Wire Wire Line
	9700 3800 9600 3800
Wire Wire Line
	9300 3800 9300 3500
Wire Wire Line
	9300 3500 9200 3500
Wire Wire Line
	9600 3800 9600 3700
Connection ~ 9600 3800
Wire Wire Line
	9600 3800 9300 3800
Wire Wire Line
	9600 3400 9600 3500
Wire Wire Line
	9600 3200 9600 3100
Connection ~ 9600 3100
Wire Wire Line
	9600 3100 9700 3100
$EndSCHEMATC