STM8S903K3 STM8S903F3 16 MHz STM8S 8-bit MCU
Product Summary
Looking for a stable MCU supply and smarter cost reduction for your next-gen electronics? The STMicroelectronics STM8S903K3 and STM8S903F3 are high-performance 8-bit microcontrollers featuring a 16 MHz core and 8 Kbytes Flash, making them ideal for automotive systems.
Product Custom Attributes
STM8S903K3
,STM8S903K3 16MHz 8-bit MCU
,Automotive Grade STM8S Microcontroller IC
Basic Properties
Product Description
16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM, 640 bytes EEPROM,10-bit ADC, 2 timers, UART, SPI, I²C








We don’t just sell hardware components; we deliver tailored MCU firmware design and full BOM optimization. Tell us your product ideas, and we’ll turn them into fully customized, cost-effective PCBA solutions
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Don't let semiconductor component shortages halt your production. We offer STM8S903K3/F3 MCUs alongside full BOM auditing, PCBA layout optimization, and high-quality packaging services to maximize your competitive edge.
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We specialize in resource integration for new energy and electronic products. Rely on our 17 years of trade expertise to supply authentic STM8S903F3 MCUs and re-engineer your cost structure for maximum ROI.
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MDuring the project development process, the supplier not only provided component support but also offered ODM solution suggestions based on our PCBA design requirements, including circuit selection, layout optimization, and cost control, which improved development efficiency.
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KWe partnered with them for a 10kWh home energy storage system, and the result was excellent. The stackable design, custom OEM support, and BOM optimization helped us launch a reliable product faster and within budget.
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TTheir custom wire harness service is excellent. They always understand our different requirements and deliver internal cable assemblies that fit our new energy products perfectly. Great customization capability and reliable quality.
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