Description
Since the 1996 model year, North American automobiles have been required to provide an OBD (On Board Diagnostics) data port for the connection of test equipment.
Features
- Low power CMOS design.
- Crystal controlled for accuracy.
- ISO 9141-2 and ISO 14230-4 protocols.
- Configurable with AT commands.
- Standard ASCII character output.
- Four high current LED drive outputs
Connection Diagram PDIP and SOIC (top view)
VDD 1 XT1 2 XT2 3 LFmode 4 RS232Rx 5 RS232Tx 6 RSRx 7
14 VSS 13 OBDK 12 OBDL 11 OBDIn 10 OBDTx 9 OBDRx 8 RSTx
Block Diagram
LFmode 4 RS232Rx 5 RS232Tx 6
RS232 Interface
3.58 MHz
XT1 2
3 XT2
Timing a.
ELM323 Datasheet
