Datasheet

Page 8
Page 9
R4
220
R5
220
C6
100nF
C7
100nF
VCC
C5
100nF
R7
10K
R8
4K7
2
3
4
5
6
7
11
12 13 14
25
24
23
22
21
18
17
16
15
8
1
19
9
10
27
26
20
28 29
30
31
32
PD3
PD4
GND
VDD
GND
VDD
PB6/XTAL1
PB7/XTAL2
PD5 PD6 PD7 PB0
PB1
PB2
PB3
PB4
PB5
AVDD
ADC6
AREF
GND
ADC7
PC0
PC1
RST
PC2
PD1 PD2 PD0
PC5 PC4 PC3
ATmega328
X1
16MHz
VCC
OSC1
OSC2
IO3
IO4
IO5 IO6 IO7 IO8 IO9 IO10 SDO SDI
SCK
AREF
AN0
AN1
R1
10K
VCC
C1
100nF
T1
DTR
RST#
AN2 AN3
RX
AN4 AN5
TX
IO2
VCC VCCAREF
LD2
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
TXD
DTR#
RTS#
VCCIO
RXD
RI#
GND
NC
DSR#
DCD#
CTS#
CBUS4
CBUS2
CBUS3
CBUS0
CBUS1
OSCO
OSCI
TEST
AGND
NC
GND
GND
VCC
RESET#
3V3OUT
USBDM
USBDP
FT232RL
U3
FT232RL
1
2
3
4
5
GND
ID
D+
D-
VBUS
CN3
USB MINI-B
VCC
RX
TX
DTR
C4
100nF
D1
BAT43
VCC-IN
VCC-USB
USBDM
USBDP
LD1
VCC
E1
10uF
1
2
3
5
4
Vin
GND
EN ADJ
Vout
U2
AP 7331-ADJ
VCC-IN
C2
2.2uF
R2
13K
VCC
R3
150K
J1
0R
1
2
3
4
5
6
7
8
9
10
11
12
13
CN1
1
2
3
4
5
6
7
8
9
10
11
12
13
CN2
IO2
IO3
IO4
IO5
IO6
IO7
IO8
IO9
RST#
RX
TX
AN4
RST#
AN5
AN3
AN2
AN1
AN0
SCK
SDI
SDO
IO10
VCC-IN
VCC
5V POWER SUPPLY REGULATOR
Figure 2-2: MINI-AT schematic with 5V power supply