microOBD 200

microOBD 200 is a quick and easy way to add OBD support to any embedded project. It is a complete OBD-II to UART interface in a DIP-24 form factor, designed for in-vehicle applications. microOBD 200 uses an enhanced version of the popular ELM327 command set, supports UART speeds up to 10 Mbps and is firmware upgradeable.

Key Features

• Supports all legislated OBD-II protocols and J1939 (heavily duty vehicles)
• Fully compatible with the ELM327 command set
• Extended "ST" command set for access to advanced functionality not available in the ELM327
• UART interface
• Bootloader for easy firmware upgrades
• Large memory buffer
• Solid automatic protocol detection algorithm, connects to more vehicles reliably
• Smart keep-alive algorithm helps ensure a stable connection on ISO and KWP vehicles
• Dimensions: 1.3" x 0.59"

Typical Applications

• Fleet management and tracking applications
• OBD data loggers
• Digital dashboards
• Automotive diagnostic scan tools and code readers
• Academic projects

• SAE J1850 PWM
• SAE J1850 VPW
• SAE J1939
• ISO 9141-2
• ISO 14230-4 (KWP 2000)
• ISO 15765-4 (CAN)
• ISO 11898 (raw CAN)

1. microOBD 200 Basic Reference Design
2. microOBD 200 Development Board Schematic
3. microOBD 200 Pinout
4. microOBD 200 Product Brief
5. STN11xx PowerSave Functionality