Atmel megaAVR, Getting Started

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Board Applications
9-7 megaAVR™ Starter Kit Manual
RS232 Circuit
Analogue Reference
Decoupling Capacitors
Active 0 on Switches
Active 0 on LEDs
3V3
GND
GND
AGND
E
x
ternal Power Source
(DC or AC)
LCD Timing Ciruit
EN
LCD Interface
Lights and Switches
Brow
nout Detector Circuit
P
ro
gramming Interface
PE0
PE1
+5V
+5V
VCC
VCC
+5
VCC
VCC
+5
+5
+5
+5
C10 10uF
+
C9 10uF
+
C12 10uF
+
C11 10uF
+
U4 M
A
X
202CPE
C1+
1
V+
2
C1-
3
C2+
4
C2-
5
V-
6
T2OUT
7
R2IN
8
R2OUT
9
T2IN
10
T1IN
11
R1OUT
12
R1IN
13
T1OUT
14
GND
15
Vcc
16
VR1 10K
C20 100nF
C13 100nF
C14 100nF
C15 100nF
C16 100nF
C17 100nF
C18 100nF
C19 100nF
HEADER 8
X
2
PD0 PD1 PD2 PD3 PD4 PD5 PD6 PD7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
10K Resnet
PD0
10K Resnet
PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7
HEADER
8
X
2
PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
REG1 LM317T
VIN
3
ADJ
1
VOUT
2
R6 240R
R7 820R
R5 39R R4 680R
C5 470nF
C6 100nf
C4 470nF
C3 220uF
BRIDGE
-+
S1 SW SPST
U3C
74HC00
9
10
8
U3A 74HC00
1 2
3
U3D 74HC00
12 13
11
C8 33pF
D2
BAT85
R3 10K
Data 0
7
Data 1
8
Data 2
9
Data 3
10
Data 4
11
Data 5
12
Data 6
13
Data 7
14
GND
1
+5V
2
Cont
3
Reg Sel
4
R/W
5
Enable
6
Q2 BC182
1
2
3
R10 18K
R11 10K
R12 10K
C7 100nF
5
V
B
r
ownout
R8 43K
R14 1M
Q1 BC182
1
2
3
U3B 74HC00
4 5
6
R15 100R
R13
1K
U2 4053
X0
12
X1
13
Y0
2
Y1
1
Z0
5
Z1
3
INH
6
A
11
B
10
C
9
X
14
Y
15
Z
4
R16
1K
PD3
R2
1K
PD4
P9 RS232
5 9 4 8 3 7 2 6 1
PD7
BC212
1
2
3
HEADER
5
X
2
1
2
3
4
5
6
7
8
9
10
PD2 PD5
PB0
R1 1K
REG2 LM78L05
A
C
H
VIN
3
VOUT
1
GND
2
PD6
R9 11K
PD1
VREF
AGND
TXD RXD
VCC
A15
WR RD
VCC
P-RESET
RESET
EXT
RESET
ISP MOSI ISP MISO
ISP LED
ISP RST ISP SCK
M
O
SI (ISP)
MEGA Pin 3 (
PE1)
SCK (ISP)
MEGA Pin 11 (SCK MEGA Pin 2 (
PE0)
M
O
SI (ISP)
PORT B
Bit 1
LED Enable (
ISP)
P
ORT PIN
RS 232 P
ORT PIN
RS 232
RST + B
ROWNOUT
RST (ISP)
CS
-10V +10V