{"product_id":"stm8s903f3m3","title":"STM8S903F3M3","description":"\u003cp\u003eThe STM8S903F3M3 is a reliable 8-bit microcontroller from STMicroelectronics, featuring the efficient STM8 core. It operates at 16 MHz with 8 KB of flash and 1 KB of RAM, packaged in a 20-SOIC. The device supports a wide supply range of 2.95V to 5.5V and includes essential safety features like brown-out reset and a watchdog timer. This MCU is engineered for cost-sensitive applications requiring robust performance in industrial and consumer electronics.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Safety Features:\u003c\/strong\u003e Integrated POR, BOR, and WDT reduce external component count and improve system reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Temperature Range:\u003c\/strong\u003e Operates from -40°C to 125°C, suitable for harsh environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficient 8-bit Core:\u003c\/strong\u003e The STM8 architecture delivers high code density and low power consumption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard SOIC-20 Package:\u003c\/strong\u003e Easy to solder and widely available, simplifying manufacturing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eMotor Control\u003c\/h3\u003e\u003cp\u003eThe STM8S903F3M3 provides dedicated PWM timers and a 16 MHz clock, enabling precise speed control for small DC or brushless motors in fans and pumps.\u003c\/p\u003e\u003ch3\u003eBattery Management\u003c\/h3\u003e\u003cp\u003eWith a 2.95V minimum supply, it can monitor battery voltage and control charging\/discharging paths in portable devices, using its brown-out detector to signal low-battery conditions.\u003c\/p\u003e\u003ch3\u003eHVAC Systems\u003c\/h3\u003e\u003cp\u003eIn thermostats or damper controllers, the wide temperature range and robust I\/O handle 24V AC industrial signals with minimal external components.\u003c\/p\u003e\u003ch3\u003eSecurity Systems\u003c\/h3\u003e\u003cp\u003eUse it for motion detector interfaces or keypad scanning. The WDT ensures the system recovers from transient faults, maintaining alarm integrity.\u003c\/p\u003e\u003ch3\u003eMedical Devices (Non-critical)\u003c\/h3\u003e\u003cp\u003eFor devices like blood pressure monitors, the 8 KB flash stores calibration data, and the low power consumption extends battery life.\u003c\/p\u003e\u003ch3\u003eSmart Sensors\u003c\/h3\u003e\u003cp\u003eCombine the MCU with a MEMS sensor to create a smart node that pre-processes data and communicates via UART, reducing host processor load.\u003c\/p\u003e\u003ctable\u003e\n\u003ccolgroup\u003e\u003ccol\u003e\u003c\/colgroup\u003e \u003ctbody\u003e \u003ctr\u003e \t\u003ctd\u003eProduct attributes\u003c\/td\u003e \t\u003ctd\u003eProperty Value\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eManufacturer\u003c\/td\u003e \t\u003ctd\u003eSTMicroelectronics\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eProduct Series\u003c\/td\u003e \t\u003ctd\u003eSTM8S\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePackaging\u003c\/td\u003e \t\u003ctd\u003eTube | NULL\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eCore Processor\u003c\/td\u003e \t\u003ctd\u003eSTM8\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eCore Size\u003c\/td\u003e \t\u003ctd\u003e8-Bit\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eSpeed\u003c\/td\u003e \t\u003ctd\u003e16MHz\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eConnectivity\u003c\/td\u003e \t\u003ctd\u003eI2C, IrDA, LINbus, SPI, UART\/USART\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePeripherals\u003c\/td\u003e \t\u003ctd\u003eBrown-out Detect\/Reset, POR, PWM, WDT\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eNumber of I\/O\u003c\/td\u003e \t\u003ctd\u003e16\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eProgram Memory Size\u003c\/td\u003e \t\u003ctd\u003e8KB (8K x 8)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eProgram Memory Type\u003c\/td\u003e \t\u003ctd\u003eFLASH\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eEEPROM Size\u003c\/td\u003e \t\u003ctd\u003e640 x 8\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eRAM Size\u003c\/td\u003e \t\u003ctd\u003e1K x 8\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eVoltage - Supply (Vcc\/Vdd)\u003c\/td\u003e \t\u003ctd\u003e2.95V ~ 5.5V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eData Converters\u003c\/td\u003e \t\u003ctd\u003eA\/D 5x10b\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eOscillator Type\u003c\/td\u003e \t\u003ctd\u003eInternal\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eOperating Temperature\u003c\/td\u003e \t\u003ctd\u003e-40°C ~ 125°C (TA)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eGrade\u003c\/td\u003e \t\u003ctd\u003e-\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eQualification AEC\u003c\/td\u003e \t\u003ctd\u003e-\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eMounting Type\u003c\/td\u003e \t\u003ctd\u003eSurface Mount\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eSupplier Device Package\u003c\/td\u003e \t\u003ctd\u003e20-SO\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePackage \/ Case\u003c\/td\u003e \t\u003ctd\u003e20-SOIC (0.295\", 7.50mm Width)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e   \u003ctd\u003eROHS\u003c\/td\u003e   \u003ctd\u003e\u003cimg class=\"ROSHICON\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0910\/9756\/3425\/files\/ROHSICON.png?v=1757832376\"\u003e\u003c\/td\u003e  \u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cdl\u003e\n\u003cdt\u003eQ: What is the core architecture of the STM8S903F3M3?\u003c\/dt\u003e\n\u003cdd\u003eA: It uses the STM8 8-bit core running at up to 16 MHz.\u003c\/dd\u003e\n\u003cdt\u003eQ: What is the supply voltage range?\u003c\/dt\u003e\n\u003cdd\u003eA: It operates from 2.95V to 5.5V.\u003c\/dd\u003e\n\u003cdt\u003eQ: How much program memory is available?\u003c\/dt\u003e\n\u003cdd\u003eA: It has 8 KB of flash memory.\u003c\/dd\u003e\n\u003cdt\u003eQ: What package does it come in?\u003c\/dt\u003e\n\u003cdd\u003eA: It is available in a 20-pin SOIC (7.5mm width) package.\u003c\/dd\u003e\n\u003cdt\u003eQ: Does it include a watchdog timer?\u003c\/dt\u003e\n\u003cdd\u003eA: Yes, it features a WDT, POR, and brown-out reset for reliable operation.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"STMicroelectronics","offers":[{"title":"Default Title","offer_id":50885929828641,"sku":"STM8S903F3M3","price":4.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0910\/9756\/3425\/files\/IC_MCU_497_20SOIC-7.5_20_4a5da6ab-a31c-4821-a846-8fcf663cfb80.jpg?v=1739294934","url":"https:\/\/hqickey.com\/products\/stm8s903f3m3","provider":"HQICKEY","version":"1.0","type":"link"}