STM8S105K6U6A - 16MHz 32KB 8-Bit MCU | STMicroelectronics
MPN: STM8S105K6U6A ✓ فعالSTM8S105K6U6A نمای کلی
An 8-bit microcontroller is a compact embedded computing device that executes firmware from nonvolatile program memory and controls peripherals through configurable input/output pins. In the product hierarchy, the STM8S105K6U6A is an STM8-family microcontroller within STMicroelectronics' broader STM8 access line. This category is suited to cost-sensitive embedded products that need moderate processing performance, serial communication, analog measurement, and deterministic peripheral control without a higher-complexity processor.
The principal features of this part include a 16 MHz clock, 32 KB of Flash memory, 2 KB of RAM, 25 available I/O lines, and a 10-bit ADC. Communications and timing resources include UART, SPI, and I2C interfaces, while integrated timers support periodic events, timing functions, and motor or signal-control applications. Its 32-pin UFQFPN package provides a compact surface-mount footprint while exposing a broad collection of digital and analog functions.
The STM8S105 architecture provides an economical balance between processing capability and embedded I/O. Flash memory supports firmware storage, RAM supports working data, and integrated EEPROM can retain configuration or calibration information without external memory. The combination of 16 MHz operation, dedicated serial peripherals, and a 10-bit ADC allows one controller to supervise sensors, communicate with external logic, and coordinate timing-sensitive outputs.
Typical applications include compact industrial controllers, building and access-control modules, appliance control boards, sensor interfaces, compact motor controllers, and low-cost communication equipment. The UART, SPI, and I2C peripherals allow the MCU to connect to sensors, displays, transceivers, memories, and other digital components while the ADC supports analog inputs within appropriate operating limits.
PCB design should preserve the manufacturer's recommended decoupling, exposed-pad, clock, and analog-input layout practices. The exposed pad beneath the UFQFPN package requires an appropriate land pattern and thermal-via arrangement, while power and signal paths should be routed to minimize noise coupling into ADC measurements.
This product page combines manufacturer and distributor specifications with focused engineering guidance covering interface selection, PCB implementation, and drop-in replacement constraints. It also distinguishes a true same-footprint replacement from nearby devices that differ in package or memory configuration, helping engineers evaluate redesign risk before committing a component to a new board revision.
جایگزین‌های drop-in برای STM8S105K6U6A — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای STM8S105K6U6A (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, ADC Resolution, Product Type, Program Memory Size, Serial Interfaces.
STM8S105K6U6
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
STM8S105K6U6A حداکثر مقادیر مجاز و مشخصات الکتریکی
| Product Type | 8-bit microcontroller |
| Series | STM8S access line |
| حداکثر فرکانس کلاک | 16 MHz |
| Program Memory Size | 32 KB Flash (32K x 8) |
| RAM Size | 2 KB (2K x 8) |
| Number of I/O Ports | 25 |
| ADC Resolution | 10 bit |
| Serial Interfaces | UART, SPI, and I2C |
| Timer Resources | Integrated timers |
| بسته‌بندی | 32-pin UFQFPN with exposed pad |
| Package Dimensions | 5 mm x 5 mm |
| نوع نصب | Surface mount |
| ولتاژ تغذیه | 3.3 V or 5 V |
| Programmable Memory Type | Flash |
| Interrupt Management | Nested interrupt controller with 32 interrupts |
| Internal Oscillator | Internal oscillator |
| Packaging | Tray |
راهنمای پیکربندی پین STM8S105K6U6A 5 mm x 5 mm
پیکربندی پین برای STM8S105K6U6A (پکیج 5 mm x 5 mm). این IC دیجیتال شامل GPIO، رابط‌های ارتباطی (UART، SPI، I2C) و پین‌های تغذیه است. برای عملکردهای جایگزین پین و گزینه‌های پیکربندی به دیتاشیت سازنده مراجعه کنید. ضروری برای طراحی سیستم‌های نهفته و چیدمان PCB.
داده پین‌آوت تفصیلی موجود نیست برای STM8S105K6U6A.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
STM8S105K6U6A مناسب است برای 6 کاربردs: Industrial Sensor Interface, Access-Control and Security Module, Appliance Control Board, Compact Motor Controller, Communications Gateway Module, LED Lighting Controller.
Industrial Sensor Interface
The STM8S105K6U6A is suitable for compact industrial sensor-conditioning modules that combine analog measurement with local digital control. Its 10-bit ADC supports resistive, divider-based, and other appropriate analog inputs, while 25 I/O positions leave capacity for sensor enables, alarms, status indicators, and digital thresholds. The 16 MHz core can service periodic sampling and control logic, and 2 KB of RAM provides working space for short acquisition buffers. UART, SPI, or I2C can carry readings to a supervisory controller. Follow the manufacturer’s ADC, decoupling, and analog-ground layout guidance, and verify that the sensor signal remains within the device’s specified operating limits.
پیشنهادی
Access-Control and Security Module
The STM8S105K6U6A fits access-control readers, credential interfaces, and compact security modules requiring several digital lines and reliable serial connectivity. Its 25 available I/O positions can support readers, indicators, lock-control signals, and tamper inputs, while the 16 MHz processor supports responsive protocol and state-machine handling. UART, SPI, and I2C provide options for connecting a secure element, reader module, or network interface. The 32 KB of Flash accommodates application firmware, while 2 KB of RAM is suitable for constrained protocol buffers. Security implementations should add the appropriate authentication, tamper response, and key-management measures at the system level.
پیشنهادی
Appliance Control Board
The STM8S105K6U6A is appropriate for compact appliance controllers that coordinate user inputs, displays, motors, and external sensors. Its 16 MHz execution rate and 32 KB Flash memory are suitable for deterministic control sequences, while 25 I/O ports can connect buttons, encoders, relays, and status devices. The 10-bit ADC can monitor simple analog feedback, and UART, SPI, and I2C can support a display, communications module, or external memory. Designers should provide suitable driver interfaces for inductive loads, validate shutdown behavior, and include bulk and local decoupling based on the manufacturer’s electrical guidance. The compact 5 mm by 5 mm UFQFPN package supports space-constrained appliance designs.
پیشنهادی
Compact Motor Controller
The STM8S105K6U6A can serve as the timing and logic controller for compact motors, solenoids, and actuator systems. Its timers and 16 MHz core support periodic commutation, PWM generation, or duty-cycle control, while 25 I/O positions allow connection of control signals, Hall-effect inputs, limit switches, and status indicators. UART, SPI, and I2C enable parameter monitoring or supervisory control. Because an MCU cannot directly drive most inductive loads, use appropriately rated gate drivers or transistor stages and include protection against overcurrent, reverse polarity, and inductive transients. Validate timing, thermal margin, and stall behavior at the system level.
پیشنهادی
Communications Gateway Module
The STM8S105K6U6A is useful in small protocol-conversion or communications modules where local I/O and multiple serial interfaces are needed. A 16 MHz 8-bit core can handle byte-level protocol processing, and the UART, SPI, and I2C peripherals allow simultaneous connection to local sensors, transceivers, or storage. The 32 KB Flash capacity supports protocol firmware and configuration logic, while the 2 KB RAM supports short frames and state buffers. For network gateways requiring larger protocol stacks, buffer storage, or high throughput, evaluate whether these memory resources are sufficient before finalizing the architecture. Keep serial routing away from ADC inputs and preserve clean power returns.
پیشنهادی
LED Lighting Controller
The STM8S105K6U6A can coordinate dimmable LED systems, status indicators, and small architectural-lighting controllers. Its timers support repeatable timing and dimming sequences, while 25 I/O positions provide channels for lamp enables, level-control signals, and user interfaces. The 10-bit ADC may monitor a representative supply or feedback signal when the application’s accuracy requirements permit. The 32 KB Flash stores lighting effects and control logic, and the 2 KB RAM can hold schedules or short transition data. Use suitable transistor or constant-current driver circuitry instead of driving LED current directly from MCU pins, and validate thermal performance and dimming linearity across the complete load range.
پیشنهادی
داده‌های مرجع مهندسی برای STM8S105K6U6A — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | STM8S105K6U6 |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | 32-pin UFQFPN (5x5 mm) | 32-pin UFQFPN (5x5 mm) |
| Core Architecture | 8-bit STM8S | 8-bit STM8S |
| Maximum Clock Frequency | 16 MHz | 16 MHz |
| Flash Memory | 32 KB | 32 KB |
| RAM | 2 KB | 2 KB |
| Number of I/O Ports | 25 | 25 |
| ADC Resolution | 10 bit | 10 bit |
| Serial Interfaces | UART, SPI, and I2C | UART, SPI, and I2C |
| Ordering-Code Difference | STM8S105K6U6A | Final ordering suffix differs |
تفاوت‌های کلیدی
- Full STM8S105 access-line memory configuration (در مقابلSTM8S005K6T6C)
- Footprint-compatible same-family substitution path (در مقابلSTM8S105K6U6)
- Integrated mixed-signal and serial interface resources (در مقابلSTM8AF6266TCX)
یادداشت‌های طراحی
Follow the STM8S105x4/6 package land pattern for the 32-pin UFQFPN and connect its exposed pad according to the manufacturer datasheet. Provide the recommended power, ground, and decoupling capacitors close to their associated pins, and preserve the exposed-pad thermal-via arrangement. Verify courtyard clearance, solder mask, paste, and reflow profile against the package drawing rather than relying on the 5 mm by 5 mm body size alone.
Keep ADC inputs and their supporting components away from switching nodes, motor-drive traces, and high-current return paths. Use a compact grounding strategy that connects analog and digital return currents without creating long loops beneath the MCU. Place input filtering close to the relevant pins, and use the manufacturer’s reference layout when reproducing or adapting the application circuit to minimize coupling into measurement channels.
Do not treat the STM8S005K6T6C as an automatic drop-in replacement merely because it uses a similar 32-pin UFQFPN package. Its reduced program-memory capacity can prevent the firmware from fitting and may change peripheral usage or startup assumptions. Likewise, confirm the exact operating-grade requirements for STM8S105K6U6 versus STM8S105K6U6 before substitution. Any alternate firmware must be retested for timing, peripherals, and boundary conditions.
Design the power rail for the MCU and attached analog or communication circuitry as one complete load. Place local high-frequency bypass capacitance at the supply pins, route high-current return currents away from sensitive signal paths, and include bulk capacitance at the point where the rail enters the board. Check supply sequencing and voltage limits against the manufacturer electrical characteristics before applying power, especially when the ADC or external transceivers share the supply.
اطلاعات انطباق
Compliance must be confirmed from the current STMicroelectronics product documentation for the exact ordering code. No explicit AEC-Q100 qualification is established for STM8S105K6U6A.
