# STN1110-I/MM (Component) ## Description STN1110-IMM General Description The STN1110-IMM is a multiprotocol OBD-II to UART interpreter integrated circuit designed for automotive diagnostic, telematics, and vehicle communication applications. The device translates OBD-II network traffic into a UART serial data stream for communication with external microcontrollers, embedded processors, and host systems. It supports all legislated OBD-II protocols and provides compatibility with ELM327-based software while offering enhanced processing performance, expanded memory resources, advanced message filtering, firmware upgrade capability, and low-power operation. The device is intended for use in automotive diagnostic tools, fleet management systems, vehicle monitoring equipment, data acquisition systems, and embedded automotive communication products. Engineering Specification Part Number: STN1110-IMM Component Type: OBD-II to UART Interpreter Integrated Circuit Device Category: Automotive Communication Interface IC Package Type: QFN Mounting Type: Surface Mount Device (SMD) Interface Type: * UART * OBD-II Supported Protocols: * ISO 15765-4 CAN * ISO 14230-4 KWP2000 * ISO 9141-2 * SAE J1850 PWM * SAE J1850 VPW Key Features: * Multiprotocol OBD-II support * ELM327 command compatibility * Enhanced ST command extensions * High-speed UART communication * Advanced message filtering * Firmware upgrade capability * Large message buffering * Low-power operation * Automotive diagnostic interface functionality Applications: * OBD-II Scan Tools * Vehicle Diagnostics * Automotive Telematics * Fleet Management Systems * Data Logging Equipment * Embedded Automotive Controllers * Emissions Monitoring Systems * Vehicle Communication Gateways Tags #commonpartslibrary #integratedcircuit #ic #automotive #automotiveelectronics #automotivediagnostics #obdii #obd #uart #vehiclecommunication #telematics #embeddedsystems #communicationinterface #diagnosticinterface #scantool #canbus #kwp2000 #saej1850 #iso9141 #surfaceMount #smd #qfn #electroniccomponent #semiconductor #vehicleelectronics #microcontrollerinterface #datalogging #fleetmanagement #embeddedhardware #hardwaredesign ## Component Details - **Owner:** adrian95 - **Created:** 6/9/2026 - **Last Updated:** 6/9/2026 - **Visibility:** Public - **Part Type:** Integrated Circuit - **Datasheet URL:** https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/7bec259827163e127a70f3ec6f45da7329969b211722a0dc56763229897f1592.pdf - **Manufacturer Part Number:** STN1110-I_MM - **Manufacturer Name:** OBD Solution - **Symbol Style:** parametric-v1 - **Used in:** 1 project - **Part Type:** Integrated Circuits - **Sub-Type:** Logic - **MPN:** STN1110-I_MM - **Mount Type:** Surface Mount - **Package / Case Code:** QFN - **Pin Count:** 29 - **Logic Function:** AND ## Pins | Pin | Name | Type | |-----|------|------| | 1 | ~VPW_RX~/GP1 | | | 2 | PWM_RX/GP0 | | | 3 | J1850_BUS+_TX/GP2 | | | 4 | J1850_BUS-_TX/GP3 | | | 5 | VSS | | | 6 | OSC1 | | | 7 | OSC2 | | | 8 | ~ISO_RX~/GP5 | | | 9 | ~SLEEP~/GP18 | | | 10 | VDD | | | 11 | CAN_RX/GP8 | | | 12 | CAN_TX/GP9 | | | 13 | UART_RX | | | 14 | UART_TX | | | 15 | ~PWR_CTRL~/GP19 | | | 16 | VSS | | | 17 | VCAP | | | 18 | ~OBD_TX_LED~/~RST_NVM~/GP22 | | | 19 | ~OBD_RX_LED~/~INT~/GP23 | | | 20 | ~UART_TX_LED~/GP24 | | | 21 | ~UART_RX_LED~/GP25 | | | 22 | ~ISO_K_TX~/GP6 | | | 23 | ~ISO_L_TX~/GP7 | | | 24 | AVSS | | | 25 | AVDD | | | 26 | ~RESET | | | 27 | ANALOG_IN | | | 28 | PWM/~VPW~/GP4 | | | 29 | EXP | | --- *Generated from [https://www.flux.ai/adrian95/stn1110-imm](https://www.flux.ai/adrian95/stn1110-imm)*