STN1170 OBD-II, SW-CAN, MS-CAN to UART Interpreter IC

STN1170 combines the entire STN1110 (multiprotocol OBD-II) feature set with Single Wire CAN (SW-CAN) and Medium Speed CAN (MS-CAN) protocols in a single 44-pin IC.



Lead Time Notice: Orders of 100+ may have a lead time of up to 12 weeks. Please contact us with any related questions before placing your order.

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Item# 3654

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Details

Details

STN1170 combines the entire STN1110 (multiprotocol OBD-II) feature set with Single Wire CAN (SW-CAN) and Medium Speed CAN (MS-CAN) protocols in a single 44-pin IC. SW-CAN protocol support allows your device to access, monitor and issue commands on vehicles utilizing GM’s proprietary CAN network. Similarly, MS-CAN provides access to Ford’s proprietary CAN network on supporting models.

On vehicles hosting SW-CAN or MS-CAN networks, our enhanced ST command set allows your device to interpret data not available on the vehicle’s OBD-II bus. Using the GM & Ford proprietary codes, you can commonly interpret current status of systems such as:

  • Seat belt
  • Airbag
  • Headlight
  • Anti-Lock Brake (ABS)
  • Traction Control

Control commands commonly found on supported vehicles include:

  • Door lock/unlock
  • Window up/down
  • Radio volume up/down
  • Turn signals & Hazard on/off
  • Engine start/kill

While STN1170 ST commands will provide access to SW-CAN and MS-CAN networks, the proprietary GM & Ford codes must be obtained independently. A popular method is to join the Equipment and Tool Institute where the codes can be accessed/purchased. Alternately, the traffic can be analyzed and reverse engineered.

KEY FEATURES

  • Safe, secure bootloader. Reflash the firmware in the field, even over a poor quality link and avoid expensive product recalls.
  • Fully compatible with ELM327 command set, ensuring out-of-the-box compatibility with the dozens of existing software applications.
  • Extended “ST” command set provides access to enhanced functionality, without compromising compatibility.
  • PowerSave mode with multiple sleep and wakeup triggers. Ideal for permanent in-vehicle setups, device can be left connected for extended periods of time without draining the battery.
  • Perfect form factor for any application. STN1170 is available in TQFP and QFN packages.
  • RoHS compliant

STABILITY

  • Solid, field-tested software. STN1170 runs the same proven code that powers the popular STN1110 and OBDLink family of PC-based OBD interfaces. Thanks to its large user base, any problems are discovered and corrected quickly.
  • Large OBD message buffer. STN1170 has over five times as much RAM as its nearest competitor, virtually eliminating BUFFER OVERFLOW errors.
  • Automatic protocol detection algorithm is continuously fine-tuned to insure that STN1170 will connect to the widest array of vehicles, even those that do not fully conform to the OBD-II standard.

POWERSAVE TECHNOLOGY

This diagram shows the various triggers available in the STN11xx family of ICs. Please refer to the STN11xx PowerSave Functionality documentation for more details.

PowerSave Diagram
Specifications

Additional Info

DEVICE WEIGHT
  • TQFP-44: 0.0093 oz (0.26 g)
  • QFN-44: 0.0064 oz (0.18 g)
DIMENSIONS
  • TQFP-44: 12.04 x 12.04 x 1.0 mm
  • QFN-44: 8.04 x 8.04 x 0.87 mm
OPERATING VOLTAGE3-3.6V DC
OPERATING CURRENT63 mA
BATTERYSAVER™ MODE< 2 mA
OPERATING TEMPERATURE-4° to 185°F (-40° to 85°C)
Protocols
  • All legislated OBD II protocols:
    • ISO 15765-4 (CAN 250/500 kbps, 11/29 bit)
    • ISO 14230-4 (Keyword Protocol 2000)
    • ISO 9141-2 (Asian, European, Chrysler)
    • SAE J1850 VPW (GM)
    • SAE J1850 PWM (Ford)
  • Non-legislated OBD protocols:
    • Single-Wire CAN (SW-CAN) – GM proprietary network
    • Medium-Speed CAN (MS-CAN) – Ford proprietary network
    • ISO 15765
    • ISO 11898 (raw CAN)
  • SAE J1939 OBD protocol used in heavy-duty vehicles
Compare

STN IC Comparison Chart

STN1110
STN1170
STN2120
UART interface
Compatible with ELM327 AT command set
Extended ST command set
PowerSave™ sleep/wake triggers
Secure bootloader
Automatic protocol detection algorithm
RAM
8k
8k
32k
Flash
128k
128k
256k
Performance (MIPS)
40
40
70
Support for all legislated OBD-II protocols
Support for Single-Wire CAN (SW-CAN)
Support for Medium-Speed CAN (MS-CAN)
Support for SAE J1939
Advanced security options
Recommended for new designs
Unit pricing (10k pieces; USD)
$6.80
$7.78
$7.78
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