M I K R O E L E K T R O N I K A S O F T W A R E A N D H A R D W A R E S O L U T I O N S F O R T H E E M B E D D E D W O R L D
2
25
5
page
EasyAVR
USB
4
EasyAVR4 User
’
s Manual
MikroElektronika
Development
tools
RR
SS
--
22
33
22
CC
OO
MM
MM
UU
NN
IICC
AA
TT
IIOO
NN
MAX232
C1+
VS+
C1-
C2+
C2-
VS-
T2OUT
R2IN
VCC
GND
T1OUT
R1IN
R1OUT
T1IN
T2IN
R2OUT
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
U6
RS-232
CON
CONNECT
MCU TO PC
Receive
data (Rx)
Send
Data (Tx)
1
5
6
9
1
2
3
4
5
6
7
8
9
CN9
SUB-D 9p
C18
100nF
CONNECT
PC TO MCU
1
5
6
Rx
Tx
9
SERIAL
CABLE
PC
RS-232 A
CON
E9
10uF
E10
10uF
E11
10uF
E12
10uF
VCC
VCC
A
TMEGAxxxx
PB1
PB2
PB3
PB4
PD1
PD2
PB5
PB6
PB7
PD4
PD5
PD6
PC1
PC0
PD7
PC2
PC3
PC4
PC5
PC6
PC7
PA7
PA6
PA5
PA4
PA3
PA2
PA0
PA1
PD3
PB0
PD0
RST
VCC
GND
XT2
XT1
AREF
AGND
AVCC
VCC
OSCILLATOR
10K
Reset
100n
VCC
J11
J12
RS232 COMM.
Enabled
RS232 COMM.
Disabled
Figure 32.
Connection between microcontroller and a PC
