mikroElektronika EasyARM v6, Руководство пользователя

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9
EasyARM v6
MikroElektronika
page
4. RS-232 module
The RS-232 module enables the development system to communicate with external devices whose operation
is in compliance with the RS-232 standard. In order to establish connection between the RS-232 module and the
microcontroller, it is necessary to set switches 1 and 2 (optionally 3 and 4) on the DIP switch SW2 to the ON position.
TX232
RX232 P0.1
P0.0
P0.9
P0.8
SW1
GND V+
VCC C1+
T1 OUT C1-
R1 IN C2+
R1 OUT C2-
T2 IN T2 OUT
R2 OUT R2 IN
T1 IN V-
C10
C12
C13
C
100nF
11
RX232 TX232
100nF
100nF
100nF
VCC-3.3
U4
VCC-3.3
CN39
R26
100K
MAX3232
1
6
5
9
Bottom view
SUB-D 9p
RS 232 -
1
6
5
9
VCC-3.3
E4
10uF
LPC2148
P1.27
P0.31 GND P0.
0
P1.31 P0.
1
P0.
2
VCC3 P1.26 GND P0.
3
P0.
4
P1.25 P0.
5
P0.
6
P0.
7
P1.24
VREF
XT
AL1
XT
AL2
P1.28
GNDA
P0.23
RESET
P1.29 P0.20 P0.19 P0.18 P1.30 VCC3
GND
VBA
T
P0.21 P1.20
P0.17
P0.16
P0.15
P1.21
VCC3
GND
P0.14
P1.22
P0.13
P0.12
P0.11
P1.23
P0.10
P0.9
P0.8
P0.22
RTXC1
P1.19
RTXC2
GND
VCCA
P1.18
P0.25
D+
D-
P1.17
P0.28
P0.29
P0.30
P1.16
VCC3
Figure 4-2 : RS-232 module connection schematic
Figure 4-1 : RS-232 module