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ELM328 - OBD Device Identifier Test IC

Description

The ELM327 “OBD to RS232 Interpreter” IC introduced a new feature with v1.3 - the ability for a user to store a unique 12 character identifier code.

This identifier can be read at any time, but it can not be changed once it has been set.

Features

  • Based on the latest version of the ELM327.
  • Allows testing of the @2 and @3 functions.

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Datasheet preview – ELM328

Datasheet Details

Part number ELM328
Manufacturer ELM
File Size 9.15 KB
Description OBD Device Identifier Test IC
Datasheet download datasheet ELM328 Datasheet
Additional preview pages of the ELM328 datasheet.

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Full PDF Text Transcription

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ELM328 OBD Device Identifier Test IC Description The ELM327 “OBD to RS232 Interpreter” IC introduced a new feature with v1.3 - the ability for a user to store a unique 12 character identifier code. This identifier can be read at any time, but it can not be changed once it has been set. Software developers will have difficulty proving their code with this “write once, read many” feature, so we have introduced the ELM328 integrated circuit as a development tool for them. The ELM328 is a special version of the ELM327 - it is identical electrically, but the firmware has one new command (AT @0) that resets the @2 identifier lock.
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