Murata Electronics North America 2410P Manual Do Utilizador
WIT2410P
2000- 2005 Cirronet
Inc
48
M-2410-0000 Rev F
9.5. Reference Design
TXD
RTS_3.3V
If using a 5.0V converter use the
following circuit for TXD,DTR,RTS
DTR
DCD_3.3 V
DCD
V CC 3.3V
U5
MA X3 238
28
25
1
3
16
5
6
7
10
12
21
20
18
20
18
9
11
8
26
27
4
13
14
15
2
19
17
23
22
24
C1+
C1-
C2+
C2-
R1OUTB
T1OUT
T2OUT
T3OUT
T4OUT
T5OUT
R1OUT
R2OUT
R3OUT
R2OUT
R3OUT
R2IN
R3IN
R3IN
R1IN
V CC
V +
V -
FORCEON
FORCEOFF
INVA LID
GND
T4IN
T5IN
T2IN
T3IN
T1IN
DTR_SLEEP_3.3V
RS232 Interface
D1
MBR0520L
1
2
CTS_3.3V
+
C3
1 uF
TXD_3.3V
RXD
C5
0.1uF
0.1uF
1
2
RXD_3.3 V
R1
10k
1
2
C1
0.22uF
0.22uF
1
2
+
C4
1 uF
WIT2410 Interface
R1
6.8k
6.8k
1
2
R2
6.8k
6.8k
1
2
RTS
V CC 3.3V
Optional pullups to keep
RTS and DTR asserted
when left unconnected
RTS and DTR asserted
when left unconnected
TXD_3.3V
TXD_5V
CTS
+
C2
1 uF
R2
20k
1
2
2200
4300