STMicroelectronics STM8S103F3M3
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $4.81 | $4.81 |
| 15+ | $1.10 | $16.50 |
| 25+ | $1.08 | $27.00 |
| 50+ | $1.02 | $51.00 |
| 100+ | $0.90 | $90.00 |
| N+ | $0.18 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | STMicroelectronics |
| Product Series | STM8S |
| Packaging | Tray | NULL |
| Core Processor | STM8 |
| Core Size | 8-Bit |
| Speed | 16MHz |
| Connectivity | I2C, IrDA, LINbus, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 16 |
| Program Memory Size | 8KB (8K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | 640 x 8 |
| RAM Size | 1K x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.95V ~ 5.5V |
| Data Converters | A/D 5x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 20-SO |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| ROHS |  |
The STM8S103F3M3 from STMicroelectronics is a cost-effective 8-bit microcontroller built on the high-performance STM8 core. It delivers 16 MHz operation with 8 KB of flash and 1 KB of RAM, all within a compact 20-SOIC package. Designed for industrial and consumer applications, it features a wide 2.95V to 5.5V supply range, robust brown-out detection, and a watchdog timer for reliable operation in harsh environments. Its rich peripheral set simplifies board design, reducing BOM cost and time-to-market.
- Wide Voltage Range (2.95V-5.5V): Directly interfaces with both 3.3V and 5V logic, eliminating level shifters in mixed-voltage designs.
- High-Temperature Tolerance (-40°C to 125°C): Suitable for automotive and industrial environments where standard MCUs fail.
- Integrated Watchdog and Brown-out Reset: Enhances system reliability by preventing code corruption and lockups without external supervisory ICs.
- Compact SOIC-20 Package: Saves PCB space while offering enough I/O for control applications.
Industrial Control
Use the STM8S103F3M3 for simple relay or valve control. Its 16 MHz core and PWM outputs handle timing loops efficiently, while the WDT ensures fail-safe operation in noisy environments.
Sensor Signal Conditioning
With a 5V supply and integrated analog peripherals, this MCU can interface directly with analog sensors like thermistors or photodiodes, providing local processing and threshold detection without external ADCs.
Power Management
In battery-powered devices, the low-voltage operation (down to 2.95V) and brown-out reset protect against data corruption during discharge, making it ideal for monitoring and cutoff circuits.
Automotive Aftermarket
The -40°C to 125°C temperature range allows placement under the hood for non-critical functions like window lift controllers or seat position memory, where robustness is key.
Small Appliances
For blenders, fans, or coffee makers, the 8 KB flash is enough for motor control algorithms, and the SOIC package is easy to assemble on standard PCBs.
Lighting Control
Drive LED strings with PWM dimming. The 16 MHz clock provides sufficient resolution for smooth dimming curves, and the WDT prevents flicker due to software hangs.
- Q: What is the operating voltage range of the STM8S103F3M3?
- A: It operates from 2.95V to 5.5V, making it suitable for 3.3V and 5V systems.
- Q: What is the maximum CPU speed?
- A: The STM8 core runs at up to 16 MHz.
- Q: How much flash memory and RAM does it have?
- A: It includes 8 KB of flash program memory and 1 KB of RAM.
- Q: What package is available?
- A: It comes in a 20-pin SOIC (7.5mm width) package.
- Q: Does it have built-in watchdog and reset features?
- A: Yes, it includes a watchdog timer (WDT), power-on reset (POR), and brown-out detection.
STM8S103F3M3.pdf
- Q: What is the operating voltage range of the STM8S103F3M3?
- A: It operates from 2.95V to 5.5V, making it suitable for 3.3V and 5V systems.
- Q: What is the maximum CPU speed?
- A: The STM8 core runs at up to 16 MHz.
- Q: How much flash memory and RAM does it have?
- A: It includes 8 KB of flash program memory and 1 KB of RAM.
- Q: What package is available?
- A: It comes in a 20-pin SOIC (7.5mm width) package.
- Q: Does it have built-in watchdog and reset features?
- A: Yes, it includes a watchdog timer (WDT), power-on reset (POR), and brown-out detection.
