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EESchema Schematic File Version 2
LIBS:greta
LIBS:power
LIBS:device
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:special
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:greta-cache
EELAYER 27 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 4 7
Title "GRETA EXPANSION BOARD"
Date "5 jan 2014"
Rev "1"
Comp "(C) Martin Åberg 2013"
Comment1 "This schematic is licensed under the terms of GNU GPL version 3"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 4650 4450
Wire Wire Line
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Connection ~ 4650 4550
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
6650 3350 6650 3250
Wire Wire Line
7800 3350 7800 3250
Wire Wire Line
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Connection ~ 4650 4650
Wire Wire Line
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Connection ~ 4650 4350
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
6050 3950 6250 3950
Wire Wire Line
6250 3950 6250 3850
$Comp
L +3.3V #PWR038
U 1 1 52521924
P 4650 3850
F 0 "#PWR038" H 4650 3810 30 0001 C CNN
F 1 "+3.3V" H 4650 3960 30 0000 C CNN
F 2 "" H 4650 3850 60 0001 C CNN
F 3 "" H 4650 3850 60 0001 C CNN
1 4650 3850
1 0 0 -1
$EndComp
NoConn ~ 4750 4050
NoConn ~ 4750 4150
$Comp
L GND #PWR039
U 1 1 52521907
P 4650 4750
F 0 "#PWR039" H 4650 4750 30 0001 C CNN
F 1 "GND" H 4650 4680 30 0001 C CNN
F 2 "" H 4650 4750 60 0001 C CNN
F 3 "" H 4650 4750 60 0001 C CNN
1 4650 4750
1 0 0 -1
$EndComp
$Comp
L +3.3V #PWR040
U 1 1 525218EE
P 7800 3250
F 0 "#PWR040" H 7800 3210 30 0001 C CNN
F 1 "+3.3V" H 7800 3360 30 0000 C CNN
F 2 "" H 7800 3250 60 0001 C CNN
F 3 "" H 7800 3250 60 0001 C CNN
1 7800 3250
1 0 0 -1
$EndComp
$Comp
L +3.3V #PWR041
U 1 1 525218EB
P 7200 3250
F 0 "#PWR041" H 7200 3210 30 0001 C CNN
F 1 "+3.3V" H 7200 3360 30 0000 C CNN
F 2 "" H 7200 3250 60 0001 C CNN
F 3 "" H 7200 3250 60 0001 C CNN
1 7200 3250
1 0 0 -1
$EndComp
$Comp
L +3.3V #PWR042
U 1 1 525218EA
P 6650 3250
F 0 "#PWR042" H 6650 3210 30 0001 C CNN
F 1 "+3.3V" H 6650 3360 30 0000 C CNN
F 2 "" H 6650 3250 60 0001 C CNN
F 3 "" H 6650 3250 60 0001 C CNN
1 6650 3250
1 0 0 -1
$EndComp
$Comp
L +3.3V #PWR043
U 1 1 525218E9
P 6450 3250
F 0 "#PWR043" H 6450 3210 30 0001 C CNN
F 1 "+3.3V" H 6450 3360 30 0000 C CNN
F 2 "" H 6450 3250 60 0001 C CNN
F 3 "" H 6450 3250 60 0001 C CNN
1 6450 3250
1 0 0 -1
$EndComp
$Comp
L +3.3V #PWR044
U 1 1 525218E1
P 6250 3250
F 0 "#PWR044" H 6250 3210 30 0001 C CNN
F 1 "+3.3V" H 6250 3360 30 0000 C CNN
F 2 "" H 6250 3250 60 0001 C CNN
F 3 "" H 6250 3250 60 0001 C CNN
1 6250 3250
1 0 0 -1
$EndComp
$Comp
L R R7
U 1 1 525218C4
P 7800 3600
F 0 "R7" V 7880 3600 50 0000 C CNN
F 1 "47K" V 7800 3600 50 0000 C CNN
F 2 "" H 7800 3600 60 0001 C CNN
F 3 "" H 7800 3600 60 0001 C CNN
1 7800 3600
1 0 0 -1
$EndComp
$Comp
L R R6
U 1 1 525218BB
P 7200 3600
F 0 "R6" V 7280 3600 50 0000 C CNN
F 1 "47K" V 7200 3600 50 0000 C CNN
F 2 "" H 7200 3600 60 0001 C CNN
F 3 "" H 7200 3600 60 0001 C CNN
1 7200 3600
1 0 0 -1
$EndComp
$Comp
L R R5
U 1 1 525218B6
P 6650 3600
F 0 "R5" V 6730 3600 50 0000 C CNN
F 1 "47K" V 6650 3600 50 0000 C CNN
F 2 "" H 6650 3600 60 0001 C CNN
F 3 "" H 6650 3600 60 0001 C CNN
1 6650 3600
1 0 0 -1
$EndComp
$Comp
L R R4
U 1 1 525218AB
P 6450 3600
F 0 "R4" V 6530 3600 50 0000 C CNN
F 1 "47K" V 6450 3600 50 0000 C CNN
F 2 "" H 6450 3600 60 0001 C CNN
F 3 "" H 6450 3600 60 0001 C CNN
1 6450 3600
1 0 0 -1
$EndComp
$Comp
L R R3
U 1 1 525218A0
P 6250 3600
F 0 "R3" V 6330 3600 50 0000 C CNN
F 1 "47K" V 6250 3600 50 0000 C CNN
F 2 "" H 6250 3600 60 0001 C CNN
F 3 "" H 6250 3600 60 0001 C CNN
1 6250 3600
1 0 0 -1
$EndComp
$Comp
L MICRO_SD X2
U 1 1 5252188B
P 5350 3800
F 0 "X2" H 5700 2850 60 0000 C CNN
F 1 "MICRO_SD" H 5350 3800 60 0000 C CNN
F 2 "" H 5350 3800 60 0001 C CNN
F 3 "" H 5350 3800 60 0001 C CNN
1 5350 3800
1 0 0 -1
$EndComp
Text GLabel 6050 4450 2 60 Input ~ 0
SD_CLK
Text GLabel 7800 4350 2 60 Input ~ 0
SD_DO
Text GLabel 7200 4250 2 60 Input ~ 0
SD_DI
Text GLabel 6650 4150 2 60 Input ~ 0
SD_nCS
$EndSCHEMATC