EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 2 2
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Text HLabel 2150 3700 0    50   Input ~ 0
Vcc
Text HLabel 8750 1750 2    50   Output ~ 0
PTT_n
Text HLabel 8500 2750 2    50   Input ~ 0
SYNC_n
Text HLabel 8500 2850 2    50   Input ~ 0
CPUCLK
$Comp
L Regulator_Linear:L78L05_TO92 U2
U 1 1 5CFF4FE9
P 3750 3700
F 0 "U2" H 3750 3942 50  0000 C CNN
F 1 "L78L05_TO92" H 3750 3851 50  0000 C CNN
F 2 "Package_TO_SOT_THT:TO-92_Inline" H 3750 3925 50  0001 C CIN
F 3 "http://www.st.com/content/ccc/resource/technical/document/datasheet/15/55/e5/aa/23/5b/43/fd/CD00000446.pdf/files/CD00000446.pdf/jcr:content/translations/en.CD00000446.pdf" H 3750 3650 50  0001 C CNN
	1    3750 3700
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0115
U 1 1 5CFF6197
P 3750 4000
F 0 "#PWR0115" H 3750 3750 50  0001 C CNN
F 1 "GND" H 3755 3827 50  0000 C CNN
F 2 "" H 3750 4000 50  0001 C CNN
F 3 "" H 3750 4000 50  0001 C CNN
	1    3750 4000
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C1
U 1 1 5CFF6D4A
P 2850 3850
F 0 "C1" H 2968 3896 50  0000 L CNN
F 1 "2.2uF" H 2968 3805 50  0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D6.3mm_P2.50mm" H 2888 3700 50  0001 C CNN
F 3 "~" H 2850 3850 50  0001 C CNN
	1    2850 3850
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C14
U 1 1 5CFF7448
P 4400 3950
F 0 "C14" H 4518 3996 50  0000 L CNN
F 1 "2.2uF" H 4518 3905 50  0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D6.3mm_P2.50mm" H 4438 3800 50  0001 C CNN
F 3 "~" H 4400 3950 50  0001 C CNN
	1    4400 3950
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0122
U 1 1 5CFF7C7C
P 2850 4000
F 0 "#PWR0122" H 2850 3750 50  0001 C CNN
F 1 "GND" H 2855 3827 50  0000 C CNN
F 2 "" H 2850 4000 50  0001 C CNN
F 3 "" H 2850 4000 50  0001 C CNN
	1    2850 4000
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0123
U 1 1 5CFF8182
P 4400 4100
F 0 "#PWR0123" H 4400 3850 50  0001 C CNN
F 1 "GND" H 4405 3927 50  0000 C CNN
F 2 "" H 4400 4100 50  0001 C CNN
F 3 "" H 4400 4100 50  0001 C CNN
	1    4400 4100
	1    0    0    -1  
$EndComp
$Comp
L MCU_Microchip_ATtiny:ATtiny25-20SSU U3
U 1 1 5CFF95B7
P 5500 2850
F 0 "U3" H 4971 2896 50  0000 R CNN
F 1 "ATtiny25-20SSU" H 4971 2805 50  0000 R CNN
F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 5500 2850 50  0001 C CIN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/atmel-2586-avr-8-bit-microcontroller-attiny25-attiny45-attiny85_datasheet.pdf" H 5500 2850 50  0001 C CNN
	1    5500 2850
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0124
U 1 1 5CFFA607
P 5500 3450
F 0 "#PWR0124" H 5500 3200 50  0001 C CNN
F 1 "GND" H 5505 3277 50  0000 C CNN
F 2 "" H 5500 3450 50  0001 C CNN
F 3 "" H 5500 3450 50  0001 C CNN
	1    5500 3450
	1    0    0    -1  
$EndComp
$Comp
L Device:LED D1
U 1 1 5CFFAEA0
P 7050 3450
F 0 "D1" V 7089 3333 50  0000 R CNN
F 1 "LED" V 6998 3333 50  0000 R CNN
F 2 "LED_THT:LED_D5.0mm" H 7050 3450 50  0001 C CNN
F 3 "~" H 7050 3450 50  0001 C CNN
	1    7050 3450
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R1
U 1 1 5CFFC0CA
P 7050 3750
F 0 "R1" H 7120 3796 50  0000 L CNN
F 1 "560" H 7120 3705 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 6980 3750 50  0001 C CNN
F 3 "~" H 7050 3750 50  0001 C CNN
	1    7050 3750
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0125
U 1 1 5CFFC612
P 7050 3900
F 0 "#PWR0125" H 7050 3650 50  0001 C CNN
F 1 "GND" H 7055 3727 50  0000 C CNN
F 2 "" H 7050 3900 50  0001 C CNN
F 3 "" H 7050 3900 50  0001 C CNN
	1    7050 3900
	1    0    0    -1  
$EndComp
$Comp
L Device:R R5
U 1 1 5CFFCCDA
P 7550 1800
F 0 "R5" H 7620 1846 50  0000 L CNN
F 1 "2k" H 7620 1755 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 7480 1800 50  0001 C CNN
F 3 "~" H 7550 1800 50  0001 C CNN
	1    7550 1800
	1    0    0    -1  
$EndComp
$Comp
L Connector:AVR-ISP-6 J3
U 1 1 5CFFDB2B
P 6700 1800
F 0 "J3" H 6421 1896 50  0000 R CNN
F 1 "AVR-ISP-6" H 6421 1805 50  0000 R CNN
F 2 "Connector_IDC:IDC-Header_2x03_P2.54mm_Vertical" V 6450 1850 50  0001 C CNN
F 3 " ~" H 5425 1250 50  0001 C CNN
	1    6700 1800
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0126
U 1 1 5CFFE88A
P 6600 2200
F 0 "#PWR0126" H 6600 1950 50  0001 C CNN
F 1 "GND" H 6605 2027 50  0000 C CNN
F 2 "" H 6600 2200 50  0001 C CNN
F 3 "" H 6600 2200 50  0001 C CNN
	1    6600 2200
	1    0    0    -1  
$EndComp
Wire Wire Line
	2150 3700 2850 3700
Connection ~ 2850 3700
Wire Wire Line
	4050 3700 4400 3700
Wire Wire Line
	4400 3700 4400 3800
Wire Wire Line
	4400 3700 4400 1000
Wire Wire Line
	6600 1000 6600 1300
Connection ~ 4400 3700
Wire Wire Line
	4400 1000 5500 1000
Wire Wire Line
	5500 1000 5500 2250
Connection ~ 5500 1000
Wire Wire Line
	5500 1000 6600 1000
Wire Wire Line
	6600 1000 7550 1000
Wire Wire Line
	7550 1000 7550 1650
Connection ~ 6600 1000
Wire Wire Line
	6100 2550 7250 2550
Wire Wire Line
	6100 2750 7200 2750
Wire Wire Line
	6100 2850 8500 2850
Wire Wire Line
	6100 2950 7050 2950
Wire Wire Line
	7050 2950 7050 3300
Wire Wire Line
	7100 1900 7100 3050
Wire Wire Line
	7100 3050 6100 3050
Wire Wire Line
	7100 1600 7300 1600
Wire Wire Line
	7300 1600 7300 2650
Wire Wire Line
	7300 2650 6100 2650
Wire Wire Line
	7100 1800 7200 1800
Wire Wire Line
	7200 1800 7200 2750
Connection ~ 7200 2750
Wire Wire Line
	7100 1700 7250 1700
Wire Wire Line
	7250 1700 7250 2550
Wire Wire Line
	7200 2750 7550 2750
Wire Wire Line
	7550 1950 7550 2750
Connection ~ 7550 2750
Wire Wire Line
	7550 2750 8500 2750
$Comp
L Device:R R6
U 1 1 5D00B415
P 7850 2200
F 0 "R6" V 7643 2200 50  0000 C CNN
F 1 "1k5" V 7734 2200 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 7780 2200 50  0001 C CNN
F 3 "~" H 7850 2200 50  0001 C CNN
	1    7850 2200
	0    1    1    0   
$EndComp
$Comp
L Device:R R7
U 1 1 5D00BAAE
P 8100 2450
F 0 "R7" H 8030 2404 50  0000 R CNN
F 1 "10k" H 8030 2495 50  0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 8030 2450 50  0001 C CNN
F 3 "~" H 8100 2450 50  0001 C CNN
	1    8100 2450
	-1   0    0    1   
$EndComp
Wire Wire Line
	8750 1750 8400 1750
Wire Wire Line
	8400 1750 8400 2000
$Comp
L power:GND #PWR0127
U 1 1 5D00DA9E
P 8400 2400
F 0 "#PWR0127" H 8400 2150 50  0001 C CNN
F 1 "GND" H 8405 2227 50  0000 C CNN
F 2 "" H 8400 2400 50  0001 C CNN
F 3 "" H 8400 2400 50  0001 C CNN
	1    8400 2400
	1    0    0    -1  
$EndComp
Connection ~ 7250 2550
$Comp
L power:GND #PWR0128
U 1 1 5D00F283
P 8100 2600
F 0 "#PWR0128" H 8100 2350 50  0001 C CNN
F 1 "GND" H 8105 2427 50  0000 C CNN
F 2 "" H 8100 2600 50  0001 C CNN
F 3 "" H 8100 2600 50  0001 C CNN
	1    8100 2600
	1    0    0    -1  
$EndComp
Wire Wire Line
	8000 2200 8100 2200
Wire Wire Line
	8100 2200 8100 2300
Wire Wire Line
	7700 2200 7700 2550
Wire Wire Line
	7700 2550 7250 2550
$Comp
L Transistor_BJT:PN2222A Q2
U 1 1 5D011962
P 8300 2200
F 0 "Q2" H 8490 2246 50  0000 L CNN
F 1 "PN2222A" H 8490 2155 50  0000 L CNN
F 2 "Package_TO_SOT_THT:TO-18-3" H 8500 2125 50  0001 L CIN
F 3 "http://www.fairchildsemi.com/ds/PN/PN2222A.pdf" H 8300 2200 50  0001 L CNN
	1    8300 2200
	1    0    0    -1  
$EndComp
Connection ~ 8100 2200
Wire Wire Line
	2850 3700 3450 3700
$EndSCHEMATC