EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 4 5
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L MCU_ST_STM32F4:STM32F411CEUx U4
U 1 1 60FFEB11
P 6050 3700
F 0 "U4" H 6000 5381 50  0000 C CNN
F 1 "STM32F411CEUx" H 6650 2100 50  0000 C CNN
F 2 "Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm" H 5450 2200 50  0001 R CNN
F 3 "http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00115249.pdf" H 6050 3700 50  0001 C CNN
	1    6050 3700
	1    0    0    -1  
$EndComp
$Comp
L Device:R R24
U 1 1 6100069C
P 4200 2850
F 0 "R24" H 4270 2896 50  0000 L CNN
F 1 "10K" H 4270 2805 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 4130 2850 50  0001 C CNN
F 3 "~" H 4200 2850 50  0001 C CNN
	1    4200 2850
	1    0    0    -1  
$EndComp
Wire Wire Line
	4200 2700 4200 2600
$Comp
L power:GND #PWR0125
U 1 1 61001984
P 4200 3150
F 0 "#PWR0125" H 4200 2900 50  0001 C CNN
F 1 "GND" H 4205 2977 50  0000 C CNN
F 2 "" H 4200 3150 50  0001 C CNN
F 3 "" H 4200 3150 50  0001 C CNN
	1    4200 3150
	1    0    0    -1  
$EndComp
Wire Wire Line
	4200 3150 4200 3000
$Comp
L Device:C C29
U 1 1 61002670
P 3750 2850
F 0 "C29" H 3865 2896 50  0000 L CNN
F 1 "1uF" H 3865 2805 50  0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 3788 2700 50  0001 C CNN
F 3 "~" H 3750 2850 50  0001 C CNN
	1    3750 2850
	1    0    0    -1  
$EndComp
$Comp
L Device:R R23
U 1 1 61002EAD
P 3750 2100
F 0 "R23" H 3820 2146 50  0000 L CNN
F 1 "10K" H 3820 2055 50  0000 L CNN
F 2 "Resistor_SMD:R_0402_1005Metric" V 3680 2100 50  0001 C CNN
F 3 "~" H 3750 2100 50  0001 C CNN
	1    3750 2100
	1    0    0    -1  
$EndComp
Wire Wire Line
	5350 2400 3750 2400
Wire Wire Line
	3750 2400 3750 2700
Wire Wire Line
	3750 2400 3750 2250
Connection ~ 3750 2400
$Comp
L power:GND #PWR0126
U 1 1 6100381E
P 3750 3150
F 0 "#PWR0126" H 3750 2900 50  0001 C CNN
F 1 "GND" H 3755 2977 50  0000 C CNN
F 2 "" H 3750 3150 50  0001 C CNN
F 3 "" H 3750 3150 50  0001 C CNN
	1    3750 3150
	1    0    0    -1  
$EndComp
Wire Wire Line
	3750 3150 3750 3000
$Comp
L power:+3V3 #PWR0127
U 1 1 6100409A
P 3750 1850
F 0 "#PWR0127" H 3750 1700 50  0001 C CNN
F 1 "+3V3" H 3765 2023 50  0000 C CNN
F 2 "" H 3750 1850 50  0001 C CNN
F 3 "" H 3750 1850 50  0001 C CNN
	1    3750 1850
	1    0    0    -1  
$EndComp
Wire Wire Line
	3750 1850 3750 1950
$Comp
L power:+3V3 #PWR0128
U 1 1 610048A5
P 6300 1500
F 0 "#PWR0128" H 6300 1350 50  0001 C CNN
F 1 "+3V3" H 6315 1673 50  0000 C CNN
F 2 "" H 6300 1500 50  0001 C CNN
F 3 "" H 6300 1500 50  0001 C CNN
	1    6300 1500
	1    0    0    -1  
$EndComp
$Comp
L Diode:BAT54C D4
U 1 1 6100517A
P 5850 1600
F 0 "D4" H 5850 1825 50  0000 C CNN
F 1 "BAT54C" H 5850 1734 50  0000 C CNN
F 2 "Package_TO_SOT_SMD:SOT-23" H 5925 1725 50  0001 L CNN
F 3 "http://www.diodes.com/_files/datasheets/ds11005.pdf" H 5770 1600 50  0001 C CNN
	1    5850 1600
	1    0    0    -1  
$EndComp
Wire Wire Line
	5850 1800 5850 2200
Wire Wire Line
	6300 1500 6300 1600
Wire Wire Line
	6300 1600 6250 1600
Wire Wire Line
	5950 2200 5950 2000
Wire Wire Line
	5950 2000 6050 2000
Wire Wire Line
	6250 2000 6250 2200
Wire Wire Line
	6050 2200 6050 2000
Connection ~ 6050 2000
Wire Wire Line
	6050 2000 6150 2000
Wire Wire Line
	6150 2200 6150 2000
Connection ~ 6150 2000
Wire Wire Line
	6150 2000 6250 2000
Wire Wire Line
	6250 2000 6250 1600
Connection ~ 6250 2000
Connection ~ 6250 1600
Wire Wire Line
	6250 1600 6150 1600
$Comp
L power:+BATT #PWR0129
U 1 1 6100A7DE
P 5350 1500
F 0 "#PWR0129" H 5350 1350 50  0001 C CNN
F 1 "+BATT" H 5365 1673 50  0000 C CNN
F 2 "" H 5350 1500 50  0001 C CNN
F 3 "" H 5350 1500 50  0001 C CNN
	1    5350 1500
	1    0    0    -1  
$EndComp
Wire Wire Line
	5350 1500 5350 1600
Wire Wire Line
	5350 1600 5550 1600
Text Label 7150 4700 2    50   ~ 0
USB_D-
Text Label 7150 4800 2    50   ~ 0
USB_D+
Wire Wire Line
	7150 4800 6650 4800
Wire Wire Line
	7150 4700 6650 4700
Text Label 7150 4900 2    50   ~ 0
SWDIO
Wire Wire Line
	7150 4900 6650 4900
Text Label 7150 5000 2    50   ~ 0
SWCLK
Wire Wire Line
	7150 5000 6650 5000
Wire Wire Line
	7200 3800 6650 3800
Text Label 7150 4400 2    50   ~ 0
SDIO_D1
Text Label 7150 4500 2    50   ~ 0
SDIO_D2
Text Label 4750 5100 0    50   ~ 0
SDIO_CLK
Text HLabel 3600 2400 0    50   Input ~ 0
NRST
Wire Wire Line
	3600 2400 3750 2400
Wire Wire Line
	4200 2600 5350 2600
$Comp
L Device:C_Polarized C30
U 1 1 610728EA
P 4600 2950
F 0 "C30" H 4718 2996 50  0000 L CNN
F 1 "4u7F" H 4718 2905 50  0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 4638 2800 50  0001 C CNN
F 3 "~" H 4600 2950 50  0001 C CNN
	1    4600 2950
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0132
U 1 1 61072E5F
P 4600 3150
F 0 "#PWR0132" H 4600 2900 50  0001 C CNN
F 1 "GND" H 4605 2977 50  0000 C CNN
F 2 "" H 4600 3150 50  0001 C CNN
F 3 "" H 4600 3150 50  0001 C CNN
	1    4600 3150
	1    0    0    -1  
$EndComp
Wire Wire Line
	4600 3100 4600 3150
Wire Wire Line
	5350 2800 4600 2800
$Comp
L power:GND #PWR0134
U 1 1 6107BF0B
P 1800 1450
F 0 "#PWR0134" H 1800 1200 50  0001 C CNN
F 1 "GND" V 1805 1322 50  0000 R CNN
F 2 "" H 1800 1450 50  0001 C CNN
F 3 "" H 1800 1450 50  0001 C CNN
	1    1800 1450
	0    -1   -1   0   
$EndComp
Wire Wire Line
	1650 1450 1800 1450
$Comp
L power:VBUS #PWR0135
U 1 1 6108C4A1
P 1800 1050
F 0 "#PWR0135" H 1800 900 50  0001 C CNN
F 1 "VBUS" V 1815 1178 50  0000 L CNN
F 2 "" H 1800 1050 50  0001 C CNN
F 3 "" H 1800 1050 50  0001 C CNN
	1    1800 1050
	0    1    1    0   
$EndComp
Text Label 2100 1350 2    50   ~ 0
USB_D-
Text Label 2100 1250 2    50   ~ 0
USB_D+
Wire Wire Line
	2100 1350 1650 1350
Wire Wire Line
	2100 1250 1650 1250
Wire Wire Line
	1650 1050 1800 1050
Text Label 4950 3000 0    50   ~ 0
HS_OSC0
Text Label 4950 3100 0    50   ~ 0
HS_OSC1
Wire Wire Line
	4950 3100 5350 3100
Wire Wire Line
	5350 3000 4950 3000
Text Label 1750 3850 2    50   ~ 0
HS_OSC1
Text Label 450  3850 0    50   ~ 0
HS_OSC0
$Comp
L Device:Crystal_GND24 Y2
U 1 1 6111F0CA
P 1100 3850
F 0 "Y2" H 1300 3650 50  0000 R CNN
F 1 "24Mhz" H 1000 3600 50  0000 R CNN
F 2 "Crystal:Crystal_SMD_EuroQuartz_X22-4Pin_2.5x2.0mm" H 1100 3850 50  0001 C CNN
F 3 "~" H 1100 3850 50  0001 C CNN
	1    1100 3850
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR0144
U 1 1 61120128
P 1100 3450
F 0 "#PWR0144" H 1100 3200 50  0001 C CNN
F 1 "GND" H 1105 3277 50  0000 C CNN
F 2 "" H 1100 3450 50  0001 C CNN
F 3 "" H 1100 3450 50  0001 C CNN
	1    1100 3450
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR0145
U 1 1 61120856
P 1100 4400
F 0 "#PWR0145" H 1100 4150 50  0001 C CNN
F 1 "GND" H 1105 4227 50  0000 C CNN
F 2 "" H 1100 4400 50  0001 C CNN
F 3 "" H 1100 4400 50  0001 C CNN
	1    1100 4400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C27
U 1 1 61120E61
P 850 4100
F 0 "C27" H 965 4146 50  0000 L CNN
F 1 "22pF" H 965 4055 50  0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 888 3950 50  0001 C CNN
F 3 "~" H 850 4100 50  0001 C CNN
	1    850  4100
	-1   0    0    1   
$EndComp
$Comp
L Device:C C28
U 1 1 61122664
P 1350 4100
F 0 "C28" H 1465 4146 50  0000 L CNN
F 1 "22pF" H 1465 4055 50  0000 L CNN
F 2 "Capacitor_SMD:C_0402_1005Metric" H 1388 3950 50  0001 C CNN
F 3 "~" H 1350 4100 50  0001 C CNN
	1    1350 4100
	1    0    0    -1  
$EndComp
Wire Wire Line
	850  4250 850  4350
Wire Wire Line
	1100 4400 1100 4350
Wire Wire Line
	850  3950 850  3850
Connection ~ 1100 4350
Wire Wire Line
	1100 4350 1100 4050
Wire Wire Line
	1350 4250 1350 4350
Wire Wire Line
	1350 4350 1100 4350
Wire Wire Line
	1350 3950 1350 3850
Wire Wire Line
	1350 3850 1250 3850
Wire Wire Line
	1100 3650 1100 3450
Wire Wire Line
	1750 3850 1350 3850
Connection ~ 1350 3850
Connection ~ 850  3850
Wire Wire Line
	850  3850 950  3850
Wire Wire Line
	850  4350 1100 4350
Wire Wire Line
	450  3850 850  3850
Text Label 4750 4800 0    50   ~ 0
I2S4_WS
Text Label 4750 4900 0    50   ~ 0
I2S4_CLK
Text HLabel 4650 4800 0    50   Output ~ 0
DAC_LRCK
Text HLabel 4650 4900 0    50   Output ~ 0
DAC_BCLK
Text HLabel 7200 3700 2    50   Output ~ 0
DAC_DATA
Wire Wire Line
	7200 3700 6650 3700
Text HLabel 7200 3800 2    50   Input ~ 0
ADC1_IN2
Text Label 7150 3700 2    50   ~ 0
I2S4_SD
Wire Wire Line
	6650 4200 7150 4200
Wire Wire Line
	4650 4800 5350 4800
Wire Wire Line
	4650 4900 5350 4900
Wire Wire Line
	4750 5100 5350 5100
Wire Wire Line
	7150 4400 6650 4400
Wire Wire Line
	7150 4500 6650 4500
Text Label 4750 4400 0    50   ~ 0
SDIO_D0
Text Label 7150 4300 2    50   ~ 0
SPI1_MOSI
Text Label 7150 4200 2    50   ~ 0
SDIO_CMD
Text HLabel 7200 4600 2    50   Input ~ 0
NFC_TX
Text Label 4750 4200 0    50   ~ 0
SDIO_D3
Text Label 7150 4100 2    50   ~ 0
SPI1_SCK
Text Label 7150 4000 2    50   ~ 0
SPI1_NSS
Wire Wire Line
	4650 4300 5350 4300
Text HLabel 4650 4300 0    50   Output ~ 0
NFC_RX
Text Label 4750 4100 0    50   ~ 0
SPI1_MISO
NoConn ~ 6650 5100
Wire Wire Line
	4750 4200 5350 4200
Text Label 4750 4300 0    50   ~ 0
TX1
Text Label 7150 4600 2    50   ~ 0
RX1
Wire Wire Line
	4750 4400 5350 4400
NoConn ~ 6650 3600
Wire Wire Line
	7200 4600 6650 4600
NoConn ~ 5350 3800
NoConn ~ 5350 4700
NoConn ~ 5350 4500
Text Label 4750 4600 0    50   ~ 0
SDIO_DET
Wire Wire Line
	4750 4600 5350 4600
$Comp
L power:GND #PWR0148
U 1 1 611C6CDB
P 5850 5450
F 0 "#PWR0148" H 5850 5200 50  0001 C CNN
F 1 "GND" H 5855 5277 50  0000 C CNN
F 2 "" H 5850 5450 50  0001 C CNN
F 3 "" H 5850 5450 50  0001 C CNN
	1    5850 5450
	1    0    0    -1  
$EndComp
Wire Wire Line
	5850 5450 5850 5400
Wire Wire Line
	6250 5300 6250 5400
Wire Wire Line
	6250 5400 6150 5400
Connection ~ 5850 5400
Wire Wire Line
	5850 5400 5850 5300
Wire Wire Line
	5950 5300 5950 5400
Connection ~ 5950 5400
Wire Wire Line
	5950 5400 5850 5400
Wire Wire Line
	6050 5300 6050 5400
Connection ~ 6050 5400
Wire Wire Line
	6050 5400 5950 5400
Wire Wire Line
	6150 5300 6150 5400
Connection ~ 6150 5400
Wire Wire Line
	6150 5400 6050 5400
NoConn ~ 5350 3900
Text Label 4750 3700 0    50   ~ 0
BTN_PWR
Text HLabel 4650 3700 0    50   Input ~ 0
BTN_PWR
Wire Wire Line
	4650 3700 5350 3700
Text Label 4750 4000 0    50   ~ 0
MEAS_EN
Text HLabel 4650 4000 0    50   Output ~ 0
MEAS_EN
Wire Wire Line
	4650 4000 5350 4000
Text Label 4750 5000 0    50   ~ 0
PW_HOLD
Text HLabel 4650 5000 0    50   Output ~ 0
PW_HOLD
Wire Wire Line
	4650 5000 5350 5000
Text HLabel 4650 4100 0    50   Input ~ 0
NFC_MISO
Wire Wire Line
	4650 4100 5350 4100
Text HLabel 7200 4000 2    50   Output ~ 0
NFC_SPI_CS
Wire Wire Line
	6650 4000 7200 4000
Text HLabel 7200 4100 2    50   Output ~ 0
NFC_SPI_SCK
Wire Wire Line
	6650 4100 7200 4100
Text HLabel 7200 4300 2    50   Output ~ 0
NFC_SPI_MOSI
Wire Wire Line
	6650 4300 7200 4300
$Comp
L Memory_Flash:W25Q32JVZP U6
U 1 1 610EA64E
P 9200 5100
F 0 "U6" H 9450 5450 50  0000 C CNN
F 1 "W25Q32JVZP" H 9650 4750 50  0000 C CNN
F 2 "Package_SON:WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mm" H 9200 5100 50  0001 C CNN
F 3 "http://www.winbond.com/resource-files/w25q32jv%20revg%2003272018%20plus.pdf" H 9200 5100 50  0001 C CNN
	1    9200 5100
	1    0    0    -1  
$EndComp
Text HLabel 7200 3900 2    50   Output ~ 0
~DAC_SDMODE
Wire Wire Line
	6650 3900 7200 3900
Text Label 7150 3900 2    50   ~ 0
DAC_SDMODE
$Comp
L Connector:USB_B_Micro J2
U 1 1 61124D9D
P 1350 1250
F 0 "J2" H 1407 1717 50  0000 C CNN
F 1 "USB_B_Micro" H 1407 1626 50  0000 C CNN
F 2 "MySymbols:USB_Micro_B_Female" H 1500 1200 50  0001 C CNN
F 3 "~" H 1500 1200 50  0001 C CNN
	1    1350 1250
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0115
U 1 1 6114FAF3
P 1350 1800
F 0 "#PWR0115" H 1350 1550 50  0001 C CNN
F 1 "GND" V 1355 1672 50  0000 R CNN
F 2 "" H 1350 1800 50  0001 C CNN
F 3 "" H 1350 1800 50  0001 C CNN
	1    1350 1800
	1    0    0    -1  
$EndComp
Wire Wire Line
	1350 1800 1350 1700
Wire Wire Line
	1250 1650 1250 1700
Wire Wire Line
	1250 1700 1350 1700
Connection ~ 1350 1700
Wire Wire Line
	1350 1700 1350 1650
Text Label 10150 5000 2    50   ~ 0
SDIO_D1
Text Label 10150 5200 2    50   ~ 0
SDIO_D2
Text Label 10150 4900 2    50   ~ 0
SDIO_D0
Text Label 10150 5300 2    50   ~ 0
SDIO_D3
Text Label 8200 5200 0    50   ~ 0
SDIO_CLK
Text Label 8200 5000 0    50   ~ 0
SDIO_CMD
Wire Wire Line
	8200 5200 8700 5200
Wire Wire Line
	8200 5000 8700 5000
Wire Wire Line
	10150 4900 9700 4900
Wire Wire Line
	10150 5000 9700 5000
Wire Wire Line
	10150 5200 9700 5200
Wire Wire Line
	10150 5300 9700 5300
$Comp
L power:+3V3 #PWR0130
U 1 1 6121418E
P 9200 4400
F 0 "#PWR0130" H 9200 4250 50  0001 C CNN
F 1 "+3V3" H 9215 4573 50  0000 C CNN
F 2 "" H 9200 4400 50  0001 C CNN
F 3 "" H 9200 4400 50  0001 C CNN
	1    9200 4400
	1    0    0    -1  
$EndComp
Wire Wire Line
	9200 4400 9200 4700
$Comp
L power:GND #PWR0131
U 1 1 61217108
P 9200 5600
F 0 "#PWR0131" H 9200 5350 50  0001 C CNN
F 1 "GND" H 9205 5427 50  0000 C CNN
F 2 "" H 9200 5600 50  0001 C CNN
F 3 "" H 9200 5600 50  0001 C CNN
	1    9200 5600
	1    0    0    -1  
$EndComp
Wire Wire Line
	9200 5600 9200 5550
Wire Wire Line
	9300 5500 9300 5550
Wire Wire Line
	9300 5550 9200 5550
Connection ~ 9200 5550
Wire Wire Line
	9200 5550 9200 5500
$Comp
L Connector_Generic:Conn_01x04 J5
U 1 1 6121F96F
P 2800 4750
F 0 "J5" H 2718 5067 50  0000 C CNN
F 1 "Conn_01x04" H 2718 4976 50  0000 C CNN
F 2 "" H 2800 4750 50  0001 C CNN
F 3 "~" H 2800 4750 50  0001 C CNN
	1    2800 4750
	-1   0    0    -1  
$EndComp
$Comp
L power:GND #PWR0133
U 1 1 6122061D
P 3200 5000
F 0 "#PWR0133" H 3200 4750 50  0001 C CNN
F 1 "GND" H 3205 4827 50  0000 C CNN
F 2 "" H 3200 5000 50  0001 C CNN
F 3 "" H 3200 5000 50  0001 C CNN
	1    3200 5000
	1    0    0    -1  
$EndComp
Wire Wire Line
	3200 5000 3200 4950
Wire Wire Line
	3200 4950 3000 4950
$Comp
L power:+3V3 #PWR0136
U 1 1 61223539
P 3200 4550
F 0 "#PWR0136" H 3200 4400 50  0001 C CNN
F 1 "+3V3" H 3215 4723 50  0000 C CNN
F 2 "" H 3200 4550 50  0001 C CNN
F 3 "" H 3200 4550 50  0001 C CNN
	1    3200 4550
	1    0    0    -1  
$EndComp
Wire Wire Line
	3200 4550 3200 4650
Wire Wire Line
	3200 4650 3000 4650
Text Label 3300 4750 2    50   ~ 0
SWDIO
Wire Wire Line
	3300 4750 3000 4750
Text Label 3300 4850 2    50   ~ 0
SWCLK
Wire Wire Line
	3300 4850 3000 4850
$EndSCHEMATC