STMicroelectronics STM8S903F3M3
| 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 | Tube | 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 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.
- Robust Safety Features: Integrated POR, BOR, and WDT reduce external component count and improve system reliability.
- Wide Temperature Range: Operates from -40°C to 125°C, suitable for harsh environments.
- Efficient 8-bit Core: The STM8 architecture delivers high code density and low power consumption.
- Standard SOIC-20 Package: Easy to solder and widely available, simplifying manufacturing.
Motor Control
The STM8S903F3M3 provides dedicated PWM timers and a 16 MHz clock, enabling precise speed control for small DC or brushless motors in fans and pumps.
Battery Management
With 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.
HVAC Systems
In thermostats or damper controllers, the wide temperature range and robust I/O handle 24V AC industrial signals with minimal external components.
Security Systems
Use it for motion detector interfaces or keypad scanning. The WDT ensures the system recovers from transient faults, maintaining alarm integrity.
Medical Devices (Non-critical)
For devices like blood pressure monitors, the 8 KB flash stores calibration data, and the low power consumption extends battery life.
Smart Sensors
Combine the MCU with a MEMS sensor to create a smart node that pre-processes data and communicates via UART, reducing host processor load.
- Q: What is the core architecture of the STM8S903F3M3?
- A: It uses the STM8 8-bit core running at up to 16 MHz.
- Q: What is the supply voltage range?
- A: It operates from 2.95V to 5.5V.
- Q: How much program memory is available?
- A: It has 8 KB of flash memory.
- Q: What package does it come in?
- A: It is available in a 20-pin SOIC (7.5mm width) package.
- Q: Does it include a watchdog timer?
- A: Yes, it features a WDT, POR, and brown-out reset for reliable operation.
STM8S903F3M3.pdf
- Q: What is the core architecture of the STM8S903F3M3?
- A: It uses the STM8 8-bit core running at up to 16 MHz.
- Q: What is the supply voltage range?
- A: It operates from 2.95V to 5.5V.
- Q: How much program memory is available?
- A: It has 8 KB of flash memory.
- Q: What package does it come in?
- A: It is available in a 20-pin SOIC (7.5mm width) package.
- Q: Does it include a watchdog timer?
- A: Yes, it features a WDT, POR, and brown-out reset for reliable operation.
