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EESchema Schematic File Version 2
LIBS:power
LIBS:device
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:74lv1t34
LIBS:93lc46b
LIBS:Diodes_Mosfet
LIBS:hole
LIBS:Microchip_CAN
LIBS:Microchip_regulator
LIBS:MPS_Regulators
LIBS:St_Baluns
LIBS:Ti_Logic
LIBS:Ti_Regulators
LIBS:tsl256x
LIBS:voltage-translators
LIBS:Silabs
LIBS:Wurth_Eth
LIBS:Ti_POE
LIBS:STM32
LIBS:Microchip_Ethernet
LIBS:STM32F107VCT
LIBS:Pulse_Magnetics
LIBS:ALPS_Tact
LIBS:Panasonic_Relays
LIBS:Load_Driver
LIBS:Diode_Bridge
LIBS:Diodes_Regul
LIBS:Dpak_Diode
LIBS:brain-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
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F 1 "PCF8563" H 4625 4300 50 0000 C CNN
F 2 "Housings_SSOP:TSSOP-8_3x3mm_Pitch0.65mm" H 4700 4300 50 0001 C CNN
F 3 "" H 4700 4300 50 0000 C CNN
F 4 "NXP" H 4700 4300 60 0001 C CNN "MFN"
F 5 "PCF8563TS/5,118" H 4700 4300 60 0001 C CNN "MFP"
F 6 "771-PCF8563TS/5118" H 4700 4300 60 0001 C CNN "S1PN"
F 7 "I2C RTC" H 4700 4300 60 0001 C CNN "Description"
1 4700 4300
-1 0 0 -1
$EndComp
$Comp
L Crystal Y1
U 1 1 57B577CF
P 5250 4300
F 0 "Y1" V 5204 4169 50 0000 R CNN
F 1 "32768Hz" V 5295 4169 50 0000 R CNN
F 2 "Abracon:ABS07" H 5250 4300 50 0001 C CNN
F 3 "" H 5250 4300 50 0000 C CNN
F 4 "Abracon" H 5250 4300 60 0001 C CNN "MFN"
F 5 "ABS07-32.768KHZ-1-T" H 5250 4300 60 0001 C CNN "MFP"
F 6 "815-ABS07-32.7K-1-T" H 5250 4300 60 0001 C CNN "S1PN"
F 7 "Quartz 32.768KHz 12.5pF -40C +85C 10ppm" H 5250 4300 60 0001 C CNN "Description"
1 5250 4300
0 -1 1 0
$EndComp
Wire Wire Line
5250 4150 5250 4100
Wire Wire Line
5100 4100 5750 4100
Wire Wire Line
5250 4450 5250 4500
Wire Wire Line
5750 4100 5750 4600
Connection ~ 5250 4100
$Comp
F 1 "12pF" H 5865 4705 50 0000 L CNN
F 2 "Resistors_SMD:R_0603" H 5788 4600 50 0001 C CNN
F 3 "" H 5750 4750 50 0000 C CNN
F 4 "Vishay" H 7000 2150 60 0001 C CNN "MFN"
F 5 "VJ0603A120KXJPW1BC" H 7000 2150 60 0001 C CNN "MFP"
F 6 "77-VJ0603A120KXJPBC" H 7000 2150 60 0001 C CNN "S1PN"
F 7 "16V, C0G, 10%, 0603" H 7000 2150 60 0001 C CNN "Description"
1 5750 4750
-1 0 0 -1
$EndComp
Wire Wire Line
5750 4900 5750 5000
$Comp
F 1 "GND" H 5755 4827 50 0000 C CNN
F 2 "" H 5750 5000 50 0000 C CNN
F 3 "" H 5750 5000 50 0000 C CNN
1 5750 5000
-1 0 0 -1
$EndComp
Wire Wire Line
4700 4700 4700 5000
$Comp
F 1 "GND" H 4705 4827 50 0000 C CNN
F 2 "" H 4700 5000 50 0000 C CNN
F 3 "" H 4700 5000 50 0000 C CNN
1 4700 5000
-1 0 0 -1
$EndComp
Wire Wire Line
2200 4100 4300 4100
Wire Wire Line
2200 4200 4300 4200
Wire Wire Line
4000 4500 4300 4500
Text HLabel 4000 4500 0 60 Output ~ 0
IRQ
$Comp
F 1 "+3V3" H 6915 2673 50 0000 C CNN
F 2 "" H 6900 2500 50 0000 C CNN
F 3 "" H 6900 2500 50 0000 C CNN
1 6900 2500
1 0 0 -1
$EndComp
$Comp
F 1 "10nF" H 7415 3805 50 0000 L CNN
F 2 "Resistors_SMD:R_0603" H 7338 3700 50 0001 C CNN
F 3 "" H 7300 3850 50 0000 C CNN
F 4 "Wurth Electronics" H 7000 2150 60 0001 C CNN "MFN"
F 5 "885012206065" H 7000 2150 60 0001 C CNN "MFP"
F 6 "710-885012206065" H 7000 2150 60 0001 C CNN "S1PN"
F 7 "25V, X7R, 10%, 10nF, 0603" H 7000 2150 60 0001 C CNN "Description"
1 7300 3850
1 0 0 -1
$EndComp
Wire Wire Line
5250 4500 5100 4500
$Comp
F 1 "0.47F" H 6615 3805 50 0000 L CNN
F 2 "PowerCap:KR-5R5Cxx4-R" H 6538 3700 50 0001 C CNN
F 3 "" H 6500 3850 50 0000 C CNN
F 4 "Eaton" H 6500 3850 60 0001 C CNN "MFN"
F 5 "KR-5R5C474-R" H 6500 3850 60 0001 C CNN "MFP"
F 6 "504-KR-5R5C474-R" H 6500 3850 60 0001 C CNN "S1PN"
F 7 "5.5V Supercap" H 6500 3850 60 0001 C CNN "Description"
1 6500 3850
1 0 0 -1
$EndComp
Wire Wire Line
6500 3200 6500 3700
Wire Wire Line
7300 3200 7300 3700
Connection ~ 6500 3500
Wire Wire Line
6500 4000 6500 4200
Wire Wire Line
7300 4000 7300 4200
$Comp
F 1 "GND" H 6505 4027 50 0000 C CNN
F 2 "" H 6500 4200 50 0000 C CNN
F 3 "" H 6500 4200 50 0000 C CNN
1 6500 4200
1 0 0 -1
$EndComp
$Comp
F 1 "GND" H 7305 4027 50 0000 C CNN
F 2 "" H 7300 4200 50 0000 C CNN
F 3 "" H 7300 4200 50 0000 C CNN
1 7300 4200
1 0 0 -1
$EndComp
$Comp
F 1 "100R" V 6784 2750 50 0000 C CNN
F 2 "Resistors_SMD:R_0603" V 6830 2750 50 0001 C CNN
F 3 "" H 6900 2750 50 0000 C CNN
F 5 "ERJ-3EKF1000V" H 5550 3850 60 0001 C CNN "MFP"
F 6 "667-ERJ-3EKF1000V" H 5550 3850 60 0001 C CNN "S1PN"
F 7 "1%, 75V, 0603" H 5550 3850 60 0001 C CNN "Description"
1 6900 2750
-1 0 0 1
$EndComp
Wire Wire Line
6900 2500 6900 2600
$Comp
256
257
258
259
260
261
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F 1 "Diode" H 6900 3415 50 0000 C CNN
F 2 "Housings_SOT-23_SOT-143_TSOT-6:SOT-23" H 6900 3200 50 0001 C CNN
F 3 "" H 6900 3200 50 0000 C CNN
F 4 "Diodes Incorporated" H 6900 3200 60 0001 C CNN "MFN"
F 5 "BAW156-7-F" H 6900 3200 60 0001 C CNN "MFP"
F 6 "621-BAW156-F" H 6900 3200 60 0001 C CNN "S1PN"
F 7 "Low leakage 85V" H 6900 3200 60 0001 C CNN "Description"
1 6900 3200
1 0 0 1
$EndComp
Wire Wire Line
6900 2900 6900 3000
Wire Wire Line
6600 3200 6500 3200
Wire Wire Line
4700 3500 7300 3500
Wire Wire Line
7300 3200 7200 3200
Text Notes 5300 3300 0 60 ~ 0
Supercap charge @33mA\n90% charge time:\n2*R*C = 94s
$Comp
L STM32F107VCT U1
U 5 1 57BE29BE
P 1400 4100
F 0 "U1" H 1824 4645 50 0000 C CNN
F 1 "STM32F107VCT" H 1824 4554 50 0000 C CNN
F 2 "Housings_QFP:LQFP-100_14x14mm_Pitch0.5mm" H 1824 4463 50 0001 C CNN
F 3 "" H 1400 4100 50 0000 C CNN
F 4 "STMicroelectronics" H 10200 5800 60 0001 C CNN "MFN"
F 5 "STM32F107VCT7" H 10200 5800 60 0001 C CNN "MFP"
F 6 "511-STM32F107VCT7" H 10200 5800 60 0001 C CNN "S1PN"
F 7 "STM32 Connectivity, 72MHz, 256/64kB" H 10200 5800 60 0001 C CNN "Description"
5 1400 4100
1 0 0 -1
$EndComp
Connection ~ 7300 3500
Wire Wire Line
4700 3500 4700 3900
$Comp
F 1 "I2C_EXT" V 3577 3062 50 0000 R CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x04" V 3478 3062 50 0001 R CNN
F 3 "" H 3650 3300 50 0000 C CNN
F 4 "TE Connectivity" H 3650 3300 60 0001 C CNN "MFN"
F 5 "5-146281-4" H 3650 3300 60 0001 C CNN "MFP"
F 6 "571-5-146281-4" H 3650 3300 60 0001 C CNN "S1PN"
F 7 "NU" V 3478 3062 60 0000 R CNN "Installed"
1 3650 3300
0 -1 -1 0
$EndComp
Wire Wire Line
3600 3500 3600 4100
Connection ~ 3600 4100
Wire Wire Line
3700 4200 3700 3500
Connection ~ 3700 4200
Wire Wire Line
3800 3500 3800 3600
$Comp
F 1 "GND" H 3805 3427 50 0000 C CNN
F 2 "" H 3800 3600 50 0000 C CNN
F 3 "" H 3800 3600 50 0000 C CNN
1 3800 3600
1 0 0 -1
$EndComp
Wire Wire Line
3500 3500 3500 3600
Wire Wire Line
3500 3600 3300 3600
Wire Wire Line
3300 3600 3300 3500
$Comp
F 1 "+3V3" H 3315 3673 50 0000 C CNN
F 2 "" H 3300 3500 50 0000 C CNN
F 3 "" H 3300 3500 50 0000 C CNN
1 3300 3500
1 0 0 -1
$EndComp
Wire Wire Line
4300 4400 4000 4400
Text HLabel 4000 4400 0 60 Output ~ 0
OSC_OUT
Text Label 3900 4100 0 60 ~ 0
SCL
Text Label 3900 4200 0 60 ~ 0
SDA
$Comp
F 1 "4k7" V 2400 3750 50 0000 C CNN
F 2 "Resistors_SMD:R_0603" V 2430 3750 50 0001 C CNN
F 3 "" H 2500 3750 50 0000 C CNN
F 4 "Panasonic" H 5550 3850 60 0001 C CNN "MFN"
F 5 "ERJ-3GEYJ472V" H 5550 3850 60 0001 C CNN "MFP"
F 6 "667-ERJ-3GEYJ472V" H 5550 3850 60 0001 C CNN "S1PN"
F 7 "75V, 5%, 0603" H 5550 3850 60 0001 C CNN "Description"
1 2500 3750
1 0 0 -1
$EndComp
Wire Wire Line
2500 3600 2500 3300
Wire Wire Line
2800 3300 2800 3600
Wire Wire Line
2500 3900 2500 4100
Connection ~ 2500 4100
Wire Wire Line
2800 3900 2800 4200
Connection ~ 2800 4200
$Comp
F 1 "+3V3" H 2500 3440 50 0000 C CNN
F 2 "" H 2500 3300 50 0000 C CNN
F 3 "" H 2500 3300 50 0000 C CNN
1 2500 3300
1 0 0 -1
$EndComp
$Comp
F 1 "+3V3" H 2800 3440 50 0000 C CNN
F 2 "" H 2800 3300 50 0000 C CNN
F 3 "" H 2800 3300 50 0000 C CNN
1 2800 3300
1 0 0 -1
$EndComp
$Comp
F 1 "4k7" V 2700 3750 50 0000 C CNN
F 2 "Resistors_SMD:R_0603" V 2730 3750 50 0001 C CNN
F 3 "" H 2800 3750 50 0000 C CNN
F 4 "Panasonic" H 5550 3850 60 0001 C CNN "MFN"
F 5 "ERJ-3GEYJ472V" H 5550 3850 60 0001 C CNN "MFP"
F 6 "667-ERJ-3GEYJ472V" H 5550 3850 60 0001 C CNN "S1PN"
F 7 "75V, 5%, 0603" H 5550 3850 60 0001 C CNN "Description"
Text Notes 1500 2000 0 60 ~ 0
Local RTC + Supercap\nTracks time during power outage