TX D_232
RXD_232
GND
VCC
C1+
1
C1-
3
C2+
4
C2-
5
Vs +
2
Vs -
6
VCC
16
GN D
15
T1 IN
11
T1OUT
14
T2 IN
10
T2OUT
7
R1OUT
12
R1IN
13
R2OUT
9
R2IN
8
MAX232
U2
TXD
RXD
104
C5
104
C6
10 4
C8
104
C7
4K7
R1
1M
R2
30
C1
30
C2
4MH z
Z1
GND
GND
VCC
RST
1
XT2
4
XT1
5
PD0
2
PD1
3
PD2 INT0
6
PD3
7
PD4 T0
8
PD5
9
GND
10
PD6
11
AIN 0 P1 0
12
AIN1 P11
13
P12
14
P13
15
P14
16
MOSI P15
17
MISO P16
18
SCK P17
19
VCC
20
AT90S2313
U1
10 uF
C3
104
C4
330
R3
LE D
VCC
1
6
2
7
3
8
4
9
5
DB9
J3
VCC
MOSI
MISO
SCK
RST
1
2
3
4
5
6
J1
GND
VCC
10uF
C9
GN D
MOSI
VCC
MISO
RST
SCK
GND
1
2
3
4
5
6
7
8
SY89ISP
SCK
MISO
MOSI
RET
VCC
NC
GND
TDO
TDI
TCK
TMS
GND
TP1
J2