STM8S903K3T6C 16 MHz STM8S 8-bit Microcontroller
High-performance 8-bit MCU featuring up to 8 Kbytes Flash memory, 1 Kbyte RAM, 640 bytes EEPROM, 10-bit ADC, multiple timers, and communication interfaces including UART, SPI, and I²C.
Key Features
Core Architecture
- 16 MHz advanced STM8 core with Harvard architecture
- 3-stage pipeline for enhanced performance
- Extended instruction set
Memory Configuration
- Program memory: 8 Kbytes Flash with 20-year data retention at 55°C after 10k cycles
- Data memory: 640 bytes true data EEPROM with 300k cycle endurance
- RAM: 1 Kbytes
Clock, Reset and Power Management
- Operating voltage: 2.95 to 5.5 V
- Flexible clock control with 4 master clock sources:
- Low power crystal resonator oscillator
- External clock input
- Internal, user-trimmable 16 MHz RC
- Internal low-power 128 kHz RC
- Clock security system with clock monitor
- Power management with low-power modes (wait, active-halt, halt)
- Individual peripheral clock switch-off capability
- Permanently active, low consumption power-on and power-down reset
Interrupt Management
- Nested interrupt controller with 32 interrupts
- Up to 28 external interrupts on 7 vectors
Timers and Peripherals
- Advanced control timer: 16-bit, 4 CAPCOM channels, 3 complementary outputs with dead-time insertion and flexible synchronization
Peripheral Clock Enable Configuration
| Bit |
Peripheral Clock |
Bit |
Peripheral Clock |
| PCKEN17 |
TIM1 |
PCKEN13 |
UART1 |
| PCKEN16 |
TIM5 |
PCKEN12 |
Reserved |
| PCKEN15 |
Reserved |
PCKEN11 |
SPI |
| PCKEN14 |
TIM6 |
PCKEN10 |
I2C |
| PCKEN27 |
Reserved |
PCKEN23 |
ADC |
| PCKEN26 |
Reserved |
PCKEN22 |
AWU |
| PCKEN25 |
Reserved |
PCKEN21 |
Reserved |
| PCKEN24 |
Reserved |
PCKEN20 |
Reserved |
Product Documentation
Packaging & Shipping
Standard export packaging available. Customers can choose from cartons, wooden cases, and wooden pallets according to their specific requirements.
Frequently Asked Questions
How to obtain the price?
We typically provide quotations within 24 hours of receiving your inquiry (excluding weekends and holidays). For urgent pricing requests, please contact us directly.
What is your delivery time?
Small batches typically ship within 7-15 days, while large batch orders may require approximately 30 days depending on order quantity and season.
What are your payment terms?
Factory pricing with 30% deposit and 70% balance payment via T/T before shipment.
What are the shipping options?
Available shipping methods include sea freight, air freight, and express delivery (EMS, UPS, DHL, TNT, FEDEX). Please confirm your preferred method before ordering.
