EESchema Schematic File Version 4
LIBS:vinhome-cache
EELAYER 26 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 5 9
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L atmel:ATMEGA328P-AU U3
U 1 1 5B6CC01A
P 5700 4150
F 0 "U3" H 5750 5517 50  0000 C CNN
F 1 "ATMEGA328P-AU" H 5750 5426 50  0000 C CNN
F 2 "Housings_QFP:TQFP-32_7x7mm_Pitch0.8mm" H 5700 4150 50  0001 C CIN
F 3 "http://www.atmel.com/images/atmel-8271-8-bit-avr-microcontroller-atmega48a-48pa-88a-88pa-168a-168pa-328-328p_datasheet.pdf" H 5700 4150 50  0001 C CNN
	1    5700 4150
	1    0    0    -1  
$EndComp
NoConn ~ 4800 4400
NoConn ~ 4800 4500
Connection ~ 4800 5250
$Comp
L power:GND #PWR025
U 1 1 5B6CC2E7
P 4800 5400
F 0 "#PWR025" H 4800 5150 50  0001 C CNN
F 1 "GND" H 4805 5227 50  0000 C CNN
F 2 "" H 4800 5400 50  0001 C CNN
F 3 "" H 4800 5400 50  0001 C CNN
	1    4800 5400
	1    0    0    -1  
$EndComp
Wire Wire Line
	4800 5150 4800 5250
Wire Wire Line
	4800 5400 4800 5350
Wire Wire Line
	4800 5250 4800 5350
Connection ~ 4800 5350
Wire Wire Line
	4800 3650 4800 3350
Connection ~ 4800 3150
Wire Wire Line
	4800 3150 4800 3050
Connection ~ 4800 3350
Wire Wire Line
	4800 3350 4800 3150
$Comp
L power:+3V3 #PWR024
U 1 1 5B6CC572
P 4800 2850
F 0 "#PWR024" H 4800 2700 50  0001 C CNN
F 1 "+3V3" H 4815 3023 50  0000 C CNN
F 2 "" H 4800 2850 50  0001 C CNN
F 3 "" H 4800 2850 50  0001 C CNN
	1    4800 2850
	1    0    0    -1  
$EndComp
Wire Wire Line
	4800 2850 4800 3050
Connection ~ 4800 3050
$Comp
L device:C_Small C10
U 1 1 5B6CC796
P 4700 3650
F 0 "C10" V 4471 3650 50  0000 C CNN
F 1 "104" V 4562 3650 50  0000 C CNN
F 2 "Capacitors_SMD:C_0805_HandSoldering" H 4700 3650 50  0001 C CNN
F 3 "" H 4700 3650 50  0001 C CNN
	1    4700 3650
	0    1    1    0   
$EndComp
Connection ~ 4800 3650
$Comp
L power:GND #PWR023
U 1 1 5B6CC845
P 4500 3650
F 0 "#PWR023" H 4500 3400 50  0001 C CNN
F 1 "GND" H 4505 3477 50  0000 C CNN
F 2 "" H 4500 3650 50  0001 C CNN
F 3 "" H 4500 3650 50  0001 C CNN
	1    4500 3650
	1    0    0    -1  
$EndComp
Wire Wire Line
	4600 3650 4500 3650
$Comp
L device:C_Small C11
U 1 1 5B6CD364
P 7850 3600
F 0 "C11" V 7621 3600 50  0000 C CNN
F 1 "20pF" V 7712 3600 50  0000 C CNN
F 2 "Capacitors_SMD:C_0805_HandSoldering" H 7850 3600 50  0001 C CNN
F 3 "" H 7850 3600 50  0001 C CNN
	1    7850 3600
	0    1    1    0   
$EndComp
$Comp
L device:C_Small C12
U 1 1 5B6CD756
P 7850 3900
F 0 "C12" V 7621 3900 50  0000 C CNN
F 1 "20pF" V 7950 3950 50  0000 C CNN
F 2 "Capacitors_SMD:C_0805_HandSoldering" H 7850 3900 50  0001 C CNN
F 3 "" H 7850 3900 50  0001 C CNN
	1    7850 3900
	0    1    1    0   
$EndComp
$Comp
L power:GND #PWR026
U 1 1 5B6CDA03
P 8000 3700
F 0 "#PWR026" H 8000 3450 50  0001 C CNN
F 1 "GND" V 8005 3572 50  0000 R CNN
F 2 "" H 8000 3700 50  0001 C CNN
F 3 "" H 8000 3700 50  0001 C CNN
	1    8000 3700
	0    -1   -1   0   
$EndComp
Wire Wire Line
	6700 4650 6915 4650
Wire Wire Line
	6700 4750 6910 4750
Text Label 6775 4650 0    50   ~ 0
RXD_AT
Text Label 6785 4750 0    50   ~ 0
TXD_AT
Text Label 6800 4500 0    50   ~ 0
RESET
Wire Wire Line
	6700 3050 7000 3050
Wire Wire Line
	6700 3150 7000 3150
Wire Wire Line
	6700 3250 7000 3250
Wire Wire Line
	6700 3350 7000 3350
Wire Wire Line
	6700 3450 7000 3450
Wire Wire Line
	6700 3550 7000 3550
Wire Wire Line
	6700 3900 7000 3900
Wire Wire Line
	6700 4000 7000 4000
Wire Wire Line
	6700 4100 7000 4100
Wire Wire Line
	6700 4200 7000 4200
Wire Wire Line
	6700 4300 7000 4300
Wire Wire Line
	6700 4400 7000 4400
Wire Wire Line
	6700 4850 6950 4850
Wire Wire Line
	6700 4950 6950 4950
Wire Wire Line
	6700 5050 6950 5050
Wire Wire Line
	6700 5150 6950 5150
Wire Wire Line
	6700 5250 6950 5250
Wire Wire Line
	6700 5350 6950 5350
Text HLabel 7000 3050 2    50   Input ~ 0
PB0
Text HLabel 7000 3150 2    50   Input ~ 0
PB1
Text HLabel 7000 3250 2    50   Input ~ 0
PB2
Text HLabel 7000 3350 2    50   Input ~ 0
MOSI
Text HLabel 7000 3450 2    50   Input ~ 0
MISO
Text HLabel 7000 3550 2    50   Input ~ 0
SCK
Text HLabel 7000 3900 2    50   Input ~ 0
PC0
Text HLabel 7000 4000 2    50   Input ~ 0
PC1
Text HLabel 7000 4100 2    50   Input ~ 0
PC2
Text HLabel 7000 4200 2    50   Input ~ 0
PC3
Text HLabel 7000 4300 2    50   Input ~ 0
SDA
Text HLabel 7000 4400 2    50   Input ~ 0
SCL
Text HLabel 6950 4850 2    50   Input ~ 0
PD2
Text HLabel 6950 4950 2    50   Input ~ 0
PD3
Text HLabel 6950 5050 2    50   Input ~ 0
PD4
Text HLabel 6950 5150 2    50   Input ~ 0
PD5
Text HLabel 6950 5250 2    50   Input ~ 0
PD6
Text HLabel 6950 5350 2    50   Input ~ 0
PD7
$Comp
L power:+3V3 #PWR021
U 1 1 5B6D8146
P 1650 1750
F 0 "#PWR021" H 1650 1600 50  0001 C CNN
F 1 "+3V3" H 1665 1923 50  0000 C CNN
F 2 "" H 1650 1750 50  0001 C CNN
F 3 "" H 1650 1750 50  0001 C CNN
	1    1650 1750
	-1   0    0    1   
$EndComp
Wire Wire Line
	1550 1750 1650 1750
$Comp
L power:GND #PWR022
U 1 1 5B6D8D77
P 1750 1650
F 0 "#PWR022" H 1750 1400 50  0001 C CNN
F 1 "GND" V 1755 1522 50  0000 R CNN
F 2 "" H 1750 1650 50  0001 C CNN
F 3 "" H 1750 1650 50  0001 C CNN
	1    1750 1650
	0    -1   -1   0   
$EndComp
Wire Wire Line
	1550 1650 1750 1650
Wire Wire Line
	1550 1550 1850 1550
Text Label 1650 1550 0    50   ~ 0
TXD_AT
Wire Wire Line
	1550 1450 1850 1450
Text Label 1650 1450 0    50   ~ 0
RXD_AT
Wire Wire Line
	1550 1350 1750 1350
$Comp
L device:C_Small C9
U 1 1 5B6DC171
P 1850 1350
F 0 "C9" V 1700 1450 50  0000 C CNN
F 1 "104" V 1800 1450 50  0000 C CNN
F 2 "Capacitors_SMD:C_0805" H 1850 1350 50  0001 C CNN
F 3 "" H 1850 1350 50  0001 C CNN
	1    1850 1350
	0    1    1    0   
$EndComp
Wire Wire Line
	1950 1350 2050 1350
Text Label 2000 1350 0    50   ~ 0
RESET
Wire Wire Line
	6700 4500 7400 4500
$Comp
L device:R R8
U 1 1 5B6EB8E6
P 7550 4500
F 0 "R8" V 7757 4500 50  0000 C CNN
F 1 "10k" V 7666 4500 50  0000 C CNN
F 2 "Resistors_SMD:R_0805_HandSoldering" V 7480 4500 50  0001 C CNN
F 3 "" H 7550 4500 50  0001 C CNN
	1    7550 4500
	0    -1   -1   0   
$EndComp
$Comp
L power:+3V3 #PWR027
U 1 1 5B6ECCB2
P 7800 4500
F 0 "#PWR027" H 7800 4350 50  0001 C CNN
F 1 "+3V3" V 7815 4628 50  0000 L CNN
F 2 "" H 7800 4500 50  0001 C CNN
F 3 "" H 7800 4500 50  0001 C CNN
	1    7800 4500
	0    1    1    0   
$EndComp
Wire Wire Line
	7700 4500 7800 4500
$Comp
L Connector:Conn_01x08 J6
U 1 1 5B7787F8
P 1350 1450
F 0 "J6" H 1270 825 50  0000 C CNN
F 1 "Conn_01x08" H 1270 916 50  0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x08_Pitch2.54mm" H 1350 1450 50  0001 C CNN
F 3 "~" H 1350 1450 50  0001 C CNN
	1    1350 1450
	-1   0    0    1   
$EndComp
$Comp
L power:+3V3 #PWR030
U 1 1 5B778BF8
P 1650 950
F 0 "#PWR030" H 1650 800 50  0001 C CNN
F 1 "+3V3" H 1665 1123 50  0000 C CNN
F 2 "" H 1650 950 50  0001 C CNN
F 3 "" H 1650 950 50  0001 C CNN
	1    1650 950 
	1    0    0    -1  
$EndComp
Wire Wire Line
	1550 1050 1650 1050
Wire Wire Line
	1650 1050 1650 950 
Wire Wire Line
	1550 1150 2050 1150
Wire Wire Line
	2050 1150 2050 1350
Connection ~ 2050 1350
Wire Wire Line
	2050 1350 2200 1350
$Comp
L power:GND #PWR015
U 1 1 5B77AECA
P 1600 1250
F 0 "#PWR015" H 1600 1000 50  0001 C CNN
F 1 "GND" V 1605 1122 50  0000 R CNN
F 2 "" H 1600 1250 50  0001 C CNN
F 3 "" H 1600 1250 50  0001 C CNN
	1    1600 1250
	0    -1   -1   0   
$EndComp
Wire Wire Line
	1550 1250 1600 1250
Text Label 6750 4300 0    50   ~ 0
SDA
Text Label 6750 4400 0    50   ~ 0
SCL
$Comp
L device:R R14
U 1 1 5B77D8B7
P 8600 4150
F 0 "R14" H 8530 4104 50  0000 R CNN
F 1 "10k" H 8530 4195 50  0000 R CNN
F 2 "Resistors_SMD:R_0805" V 8530 4150 50  0001 C CNN
F 3 "" H 8600 4150 50  0001 C CNN
	1    8600 4150
	-1   0    0    1   
$EndComp
$Comp
L device:R R13
U 1 1 5B77D98E
P 8400 4150
F 0 "R13" H 8330 4104 50  0000 R CNN
F 1 "10k" H 8330 4195 50  0000 R CNN
F 2 "Resistors_SMD:R_0805" V 8330 4150 50  0001 C CNN
F 3 "" H 8400 4150 50  0001 C CNN
	1    8400 4150
	-1   0    0    1   
$EndComp
Wire Wire Line
	8400 4000 8500 4000
$Comp
L power:+3V3 #PWR031
U 1 1 5B7875E5
P 8500 4000
F 0 "#PWR031" H 8500 3850 50  0001 C CNN
F 1 "+3V3" V 8515 4128 50  0000 L CNN
F 2 "" H 8500 4000 50  0001 C CNN
F 3 "" H 8500 4000 50  0001 C CNN
	1    8500 4000
	1    0    0    -1  
$EndComp
Connection ~ 8500 4000
Wire Wire Line
	8500 4000 8600 4000
Wire Wire Line
	8400 4300 8400 4450
Wire Wire Line
	8600 4300 8600 4450
Text Label 8400 4450 1    50   ~ 0
SDA
Text Label 8600 4450 1    50   ~ 0
SCL
Wire Wire Line
	7250 3650 7250 3600
Wire Wire Line
	6700 3650 7250 3650
Wire Wire Line
	7950 3600 8000 3600
Wire Wire Line
	8000 3600 8000 3700
Wire Wire Line
	7200 3750 7200 3900
Wire Wire Line
	6700 3750 7200 3750
Wire Wire Line
	7950 3900 8000 3900
Wire Wire Line
	8000 3900 8000 3750
Connection ~ 8000 3700
Text Label 6750 3550 0    50   ~ 0
SCK
Text Label 6750 3450 0    50   ~ 0
MISO
Text Label 6750 3350 0    50   ~ 0
MOSI
Connection ~ 8000 3750
Wire Wire Line
	8000 3750 8000 3700
$Comp
L device:Crystal_GND24 Y1
U 1 1 5BA8A92C
P 7450 3750
F 0 "Y1" V 7404 3991 50  0000 L CNN
F 1 "Crystal_GND24" V 7495 3991 50  0000 L CNN
F 2 "Crystals:Crystal_SMD_3225-4pin_3.2x2.5mm" H 7450 3750 50  0001 C CNN
F 3 "" H 7450 3750 50  0001 C CNN
	1    7450 3750
	0    1    1    0   
$EndComp
Wire Wire Line
	7250 3600 7450 3600
Connection ~ 7450 3600
Wire Wire Line
	7450 3600 7750 3600
Wire Wire Line
	7200 3900 7450 3900
Connection ~ 7450 3900
Wire Wire Line
	7450 3900 7750 3900
Wire Wire Line
	7650 3750 8000 3750
Wire Wire Line
	7250 3750 7650 3750
Connection ~ 7650 3750
$EndSCHEMATC