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EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr B 17000 11000
encoding utf-8
Sheet 9 27
Title "rev04_08"
Date "15 10 2016"
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Text Notes 6860 5660 0 60 ~ 12
CL 12.5 pF
Text Notes 8800 6200 0 60 ~ 12
MFP is Multi Function Pin.\nGPIO output from RTC.
Text Notes 8400 4600 0 60 ~ 12
i2c pull-ups, typically 10K for 100kHz
Text Notes 6200 3400 0 126 ~ 25
Real Time Clock
Text Notes 7600 5060 0 60 ~ 12
U7
Text Notes 7600 5180 0 60 ~ 12
MCP79412-I_SN
Text Notes 6240 6640 0 60 ~ 12
X1
Text Notes 6250 6200 0 60 ~ 12
XTAL-3.2X1.5
$Comp
L power:GND #GND_046
U 1 1 58024027
P 7200 6400
F 0 "#GND_046" H 7200 6400 20 0000 C CNN
F 1 "+GND" H 7200 6330 30 0000 C CNN
F 2 "" H 7200 6400 70 0000 C CNN
F 3 "" H 7200 6400 70 0000 C CNN
1 7200 6400
1 0 0 -1
$EndComp
$Comp
L Cryptech_Alpha:3V3_BATT #3V3_BATT_02
U 1 1 58024026
P 6900 4800
F 0 "#3V3_BATT_02" H 6900 4800 20 0000 C CNN
F 1 "+3V3_BATT" H 6900 4730 30 0000 C CNN
F 2 "" H 6900 4800 70 0000 C CNN
F 3 "" H 6900 4800 70 0000 C CNN
1 6900 4800
1 0 0 -1
$EndComp
$Comp
L Cryptech_Alpha:VCCO_3V3 #VCCO_3V3_015
U 1 1 58024025
P 7400 4800
F 0 "#VCCO_3V3_015" H 7400 4800 20 0000 C CNN
F 1 "+VCCO_3V3" H 7400 4730 30 0000 C CNN
F 2 "" H 7400 4800 70 0000 C CNN
F 3 "" H 7400 4800 70 0000 C CNN
1 7400 4800
1 0 0 -1
$EndComp
$Comp
L power:GND #GND_047
U 1 1 58024024
P 6100 6400
F 0 "#GND_047" H 6100 6400 20 0000 C CNN
F 1 "+GND" H 6100 6330 30 0000 C CNN
F 2 "" H 6100 6400 70 0000 C CNN
F 3 "" H 6100 6400 70 0000 C CNN
1 6100 6400
1 0 0 -1
$EndComp
$Comp
L power:GND #GND_048
U 1 1 58024023
P 6700 6400
F 0 "#GND_048" H 6700 6400 20 0000 C CNN
F 1 "+GND" H 6700 6330 30 0000 C CNN
F 2 "" H 6700 6400 70 0000 C CNN
F 3 "" H 6700 6400 70 0000 C CNN
1 6700 6400
1 0 0 -1
$EndComp
Wire Wire Line
6900 4800 6900 5500
Wire Wire Line
7400 5500 6900 5500
Wire Wire Line
7400 6000 7200 6000
Wire Wire Line
7200 6000 7200 6400
Wire Wire Line
6700 6300 6700 6400
Wire Wire Line
6100 6300 6100 6400
Wire Wire Line
7400 4800 7400 5400
Wire Wire Line
6200 6000 6100 6000
Wire Wire Line
7400 5700 6100 5700
Wire Wire Line
6100 5700 6100 6000
Connection ~ 6100 6000
Wire Wire Line
6700 6000 6600 6000
Wire Wire Line
7400 5800 6700 5800
Wire Wire Line
6700 5800 6700 6000
Connection ~ 6700 6000
Wire Wire Line
9300 5500 8600 5500
Wire Wire Line
9500 5500 9300 5500
Wire Wire Line
9300 5400 9300 5500
Text GLabel 9500 5500 2 48 UnSpc ~ 0
RTC_MFP
Connection ~ 9300 5500
Wire Wire Line
9100 5600 8600 5600
Wire Wire Line
9500 5600 9100 5600
Wire Wire Line
9100 5400 9100 5600
Text GLabel 9500 5600 2 48 Input ~ 0
RTC_SCL
Connection ~ 9100 5600
Wire Wire Line
8900 5700 8600 5700
Wire Wire Line
9500 5700 8900 5700
Wire Wire Line
8900 5400 8900 5700
Text GLabel 9500 5700 2 48 BiDi ~ 0
RTC_SDA
Connection ~ 8900 5700
Wire Wire Line
9100 4800 9100 4900
Wire Wire Line
9100 4900 9100 5000
Wire Wire Line
8900 4900 8900 5000
Wire Wire Line
9100 4900 8900 4900
Wire Wire Line
9300 4900 9100 4900
Wire Wire Line
9300 4900 9300 5000
Connection ~ 9100 4900
$Comp
L Cryptech_Alpha:VCCO_3V3 #VCCO_3V3_016
U 1 1 58024022
P 9100 4800
F 0 "#VCCO_3V3_016" H 9100 4800 20 0000 C CNN
F 1 "+VCCO_3V3" H 9100 4730 30 0000 C CNN
F 2 "" H 9100 4800 70 0000 C CNN
F 3 "" H 9100 4800 70 0000 C CNN
1 9100 4800
1 0 0 -1
$EndComp
$Comp
L Cryptech_Alpha:MCP79412-I_SN U7
U 1 1 58024021
P 8000 5600
F 0 "U7" H 7570 4870 60 0000 L BNN
F 1 "MCP79412-I_SN" H 7580 6030 60 0000 L BNN
F 2 "Cryptech_Alpha_Footprints:SOIC127P600X175-8N" H 7580 6030 60 0001 C CNN
F 3 "" H 7580 6030 60 0000 C CNN
F 4 "Microchip" H 8000 5600 50 0001 C CNN "Manufacturer"
1 8000 5600
1 0 0 -1
$EndComp
$Comp
L Cryptech_Alpha:C-EUC0402 C71
U 1 1 58024020
P 6700 6200
F 0 "C71" H 6570 6110 60 0000 R TNN
F 1 "5.1pF" H 6570 6200 60 0000 R TNN
F 2 "Cryptech_Alpha_Footprints:C_0402" H 6570 6200 60 0001 C CNN
F 3 "" H 6570 6200 60 0000 C CNN
F 4 "-" H 6570 6200 60 0000 C CNN "Tolerance"
F 5 "50V" H 6570 6200 60 0000 C CNN "Voltage"
F 6 "NP0" H 6570 6200 60 0000 C CNN "Dielectric"
1 6700 6200
-1 0 0 1
$EndComp
$Comp
L Cryptech_Alpha:C-EUC0402 C70
U 1 1 5802401F
P 6100 6200
F 0 "C70" H 6440 6120 60 0000 R TNN
F 1 "5.1pF" H 6440 6220 60 0000 R TNN
F 2 "Cryptech_Alpha_Footprints:C_0402" H 6440 6220 60 0001 C CNN
F 3 "" H 6440 6220 60 0000 C CNN
F 4 "-" H 6440 6220 60 0000 C CNN "Tolerance"
F 5 "50V" H 6440 6220 60 0000 C CNN "Voltage"
F 6 "NP0" H 6440 6220 60 0000 C CNN "Dielectric"
1 6100 6200
-1 0 0 1
$EndComp
$Comp
L Cryptech_Alpha:XTAL-3.2X1.5 X1
U 1 1 5802401E
P 6400 6000
F 0 "X1" H 6290 5790 60 0000 L BNN
F 1 "ABS07-32.768KHZ-T" H 6230 5250 60 0000 L BNN
F 2 "Cryptech_Alpha_Footprints:XTAL3215" H 6230 5250 60 0001 C CNN
F 3 "" H 6230 5250 60 0000 C CNN
F 4 "Abracon" H 6400 6000 50 0001 C CNN "Manufacturer"
1 6400 6000
1 0 0 -1
$EndComp
$Comp
L Cryptech_Alpha:R-EU_R0402 R21
U 1 1 5802401D
P 9300 5200
F 0 "R21" V 9300 5500 60 0000 L BNN
F 1 "10k" V 9290 5700 60 0000 L BNN
F 2 "Cryptech_Alpha_Footprints:R_0402" H 9290 5700 60 0001 C CNN
F 3 "" H 9290 5700 60 0001 C CNN
F 4 "5%" V 9300 5200 50 0001 C CNN "Tolerance"
1 9300 5200
0 1 1 0
$EndComp
$Comp
L Cryptech_Alpha:R-EU_R0402 R20
U 1 1 5802401C
P 9100 5200
F 0 "R20" V 9000 5700 60 0000 L BNN
F 1 "10k" V 8990 5900 60 0000 L BNN
F 2 "Cryptech_Alpha_Footprints:R_0402" H 8990 5900 60 0001 C CNN
F 3 "" H 8990 5900 60 0001 C CNN
F 4 "5%" V 9100 5200 50 0001 C CNN "Tolerance"
1 9100 5200
0 1 1 0
$EndComp
$Comp
L Cryptech_Alpha:R-EU_R0402 R19
U 1 1 5802401B
P 8900 5200
F 0 "R19" V 8700 5900 60 0000 L BNN
F 1 "10k" V 8690 6110 60 0000 L BNN
F 2 "Cryptech_Alpha_Footprints:R_0402" H 8690 6110 60 0001 C CNN
F 3 "" H 8690 6110 60 0001 C CNN
F 4 "5%" V 8900 5200 50 0001 C CNN "Tolerance"
1 8900 5200
0 1 1 0
$EndComp
$EndSCHEMATC
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