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ELM327P Datasheet(PDF) 69 Page - ELM Electronics

Part # ELM327P
Description  OBD to RS232 Interpreter
PDF  76 Pages
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Manufacturer  ELM [ELM Electronics]
Direct Link  http://www.elmelectronics.com
Logo ELM - ELM Electronics

ELM327P Datasheet(HTML) 69 Page - ELM Electronics

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Example Applications (continued)
69 of 76
ELM327
ELM327DSH
Elm Electronics – Circuits for the Hobbyist
www.elmelectronics.com
Figure 11. An OBD (J1850 VPW) to USB Interpreter
2 (D-)
4.00MHz
27pF
USB
Interface
(type ‘B’
connector)
OBD
Interface
4 x
470
Ω
+5V
27pF
+5V
+5V
1 (+5)
4 (SG)
+5V
78L08
+12V
(J1962)
J1850 Bus +
2
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
10K
Ω
4.7K
Ω
4.7K
Ω
22K
Ω
10K
Ω
PWR
Battery
Positive
16
78L05
+12V
Signal
Ground
5
+5V
470
Ω
0.1µF
0.1µF
+5V
3 (D+)
SiLabs
CP2102
0.1µF
5.0V
TVS
1µF
7
6
26 25
3
4
5
8
+5V
327



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