STN1110 查看數據表（PDF） - Unspecified
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STN1110 Datasheet PDF : 22 Pages
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STN1110
1.0 Overview
This datasheet summarizes the features of the STN1110 device. It is not intended as a comprehensive reference source. To
complement the information in this datasheet refer to the “STN1100 Family Reference and Programming Manual”.
Please see the OBD Solutions website (www.obdsol.com) for the latest version of the STN1100 Family Reference Manual.
On-Board Diagnostics, Second Generation (OBD-II)
is a set of standards for implementing a computer
based system to control emissions from vehicles. It
was first introduced in the United States in 1994, and
became a requirement on all 1996 and newer US
vehicles. Other countries, including Canada, parts of
the European Union, Japan, Australia, and Brazil
adopted similar legislation. A large portion of the
modern vehicle fleet supports OBD-II or one of its
regional flavors (EOBD, JOBD, etc).
Among other things, OBD-II requires that each
compliant vehicle be equipped with a standard
diagnostic connector (DLC) and describes a standard
way of communicating with the vehicle’s computer,
also known as the ECU (Electronic Control Unit).
A wealth of information can be obtained by tapping
into the OBD bus, including the status of the
malfunction indicator light (MIL), diagnostic trouble
codes (DTCs), inspection and maintenance (I/M)
information, freeze frames, VIN, hundreds of real-time
parameters, and more.
The STN1110 integrated circuit is an OBD to UART
interpreter that can be used to convert messages
between any of the OBD-II protocols currently in use,
and UART. It is fully compatible with the de facto
industry standard ELM327 command set. Based on a
16-bit processor core, the STN1110 offers more
features and better performance than any other
ELM327 compatible IC.
2.0
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Feature Highlights
Fully compatible with the ELM327 AT command set
Extended ST command set
UART interface (baud rates from 38 bps to 10 Mbps1)
Secure bootloader for easy firmware updates
Support for all legislated OBD-II protocols:
o ISO 15765-4 (CAN)
o ISO 14230-4 (Keyword Protocol 2000)
o ISO 9141-2 (Asian, European, Chrysler vehicles)
o SAE J1850 VPW (GM vehicles)
o SAE J1850 PWM (Ford vehicles)
Support for non-legislated OBD protocols:
o ISO 15765
o ISO 11898 (raw CAN)
Support for SAE J1939 OBD protocol
Superior automatic protocol detection algorithm
Large memory buffer
Voltage input for battery monitoring
Available in SPDIP, SOIC and QFN-S packages
RoHS compliant
Note 1: Maximum theoretical baud rate. Actual maximum baud rate is
application dependent and may be limited by driver hardware.
3.0
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Typical Applications
Academic projects
Automotive diagnostic scan tools and code readers
Digital dashboards
Fleet management and tracking applications
OBD data loggers
STN1110DSA
www.obdsol.com
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