STM8S105K4T6 - 8-bit MCU, 16KB Flash, 16MHz | STMicroelectronics
Артикул: STM8S105K4T6 ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $2.1 | $2,10 |
| 10 | $1.89 | $18,90 |
| 100 | $1.62 | $162,00 |
| 500 | $1.44 | $720,00 |
| 1.000 | $1.26 | $1.260,00 |
STM8S105K4T6 Обзор
An 8-bit microcontroller (MCU) is a single-chip computer containing a processor core, memory, and programmable input/output peripherals. The STM8S105K4T6 belongs to the STM8S family, which is designed for cost-sensitive industrial and consumer applications. As a medium-density device per reference manual RM0016, it balances performance and peripheral integration, providing a 10-bit ADC, multiple timers, and standard communication interfaces like UART, SPI, and I2C.
Key features include a 16 MHz CPU clock delivering up to 16 MIPS, 16 KB Flash with read-while-write capability, 1 KB EEPROM with up to 300k write/erase cycles, and a 10-bit ADC with up to 7 channels. The device integrates a 16-bit advanced control timer, two 16-bit general-purpose timers, and a basic timer, plus UART, SPI, and I2C interfaces for connectivity with sensors, displays, and other peripherals.
The STM8S105K4T6 uses a Harvard-architecture STM8 core with a 3-stage pipeline. An embedded SWIM debug module enables in-circuit debugging and programming, reducing development time. The clock system offers internal and external oscillator options, including a low-power crystal oscillator and a PLL for clock multiplication.
Typical applications include industrial control, home appliances, sensor interfaces, and motor control. Its wide operating voltage range and industrial temperature grade (-40C to +85C) make it suitable for harsh environments. The integrated EEPROM eliminates external storage in many designs, reducing BOM cost.
When designing with this MCU, ensure proper decoupling of power supply pins and consider the thermal characteristics of the LQFP-32 package. Reserve the SWIM interface for programming and debugging. For low-power designs, use Active-halt and Halt modes to minimize current consumption.
Аналоги без доработки для STM8S105K4T6 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с STM8S105K4T6 (тот же форм-фактор и посадочное место) — отличается по Communication Interfaces, Data EEPROM, Operating Temperature, Timers.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
STM8S105K6T6
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
STM8S105K4T6C
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
STM8S103K3T6
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
STM8S207K8T6
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
ATMEGA328P-AU
⚡ Тот же корпус ⚠️ Характеристики не проверены✓ В наличии
$1.74 / шт.
Открыть даташит →STM8S105K4T6 Максимальные параметры и электрические характеристики
| Core Processor | STM8 8-bit CISC |
| Core Size | 8-bit |
| Максимальная тактовая частота | 16 MHz |
| Program Memory Size | 16 KB (16K x 8) Flash |
| Data EEPROM | 1 KB (true data EEPROM, 300k cycles) |
| Supply Voltage Range | 2.95 V to 5.5 V |
| ADC Resolution | 10-bit, up to 7 channels |
| Timers | 1x 16-bit advanced, 2x 16-bit general purpose, 1x basic |
| Communication Interfaces | UART, SPI, I2C |
| Debug Interface | SWIM (Single Wire Interface Module) |
| Рабочая температура | -40C to +85C |
| Корпус | LQFP-32 (7x7 mm) |
| Тип монтажа | Surface Mount |
| Performance | Up to 16 MIPS at 16 MHz |
| Low Power Modes | Active-halt, Halt |
| Статус RoHS | Compliant |
Конфигурация выводов STM8S105K4T6
| Контакт 1 | NRST — Active-low bidirectional reset |
| Контакт 2 | PA1/OSCIN — Port A1 / crystal oscillator input |
| Контакт 3 | PA2/OSCOUT — Port A2 / crystal oscillator output |
| Контакт 4 | VSSA — Analog ground |
| Контакт 5 | VDDA — Analog power supply for ADC |
| Контакт 6 | VSS — Digital ground |
| Контакт 7 | VCAP — 1.8V core regulator capacitor |
| Контакт 8 | VDD — Digital power supply (2.95V-5.5V) |
| Контакт 9 | PF4 — General purpose I/O |
| Контакт 10 | PC3/TIM2_CH3 — Port C3 / Timer 2 channel 3 |
| Контакт 11 | PC4/TIM1_CH4/ADC — Port C4 / Timer 1 channel 4 / ADC input |
| Контакт 12 | PC5/SPI_SCK — Port C5 / SPI clock |
| Контакт 13 | PC6/SPI_MOSI — Port C6 / SPI master out |
| Контакт 14 | PC7/SPI_MISO — Port C7 / SPI master in |
| Контакт 18 | PD1/SWIM — Port D1 / SWIM debug and programming interface |
| Контакт 19 | PD2/ADC_ETR — Port D2 / ADC external trigger |
| Контакт 30 | PA3/TIM2_CH1 — Port A3 / Timer 2 channel 1 |
| Контакт 32 | PF0 — General purpose I/O |
Типичное применение
STM8S105K4T6 подходит для 6 применениеs: Industrial Control, Home Appliances, Sensor Interfaces, Motor Control (Small Fans and Pumps), Consumer Electronics and Lighting, Building Automation Nodes.
Industrial Control
The STM8S105K4T6 fits industrial control nodes thanks to its 16 MHz core, industrial -40C to +85C rating, and 2.95V to 5.5V supply tolerance for noisy 5V PLC backplanes. Its 16-bit advanced control timer handles PWM actuator drive, while the 10-bit ADC (7 channels) digitizes potentiometer and sensor feedback. UART connectivity links to HMI panels; SWIM allows field reprogramming. Use the Active-halt mode in standby panels to cut idle current.
Рекомендуется
Home Appliances
In washing machines, cookers, and fans, the STM8S105K4T6 provides low-BOM-cost control: integrated EEPROM (1 KB, 300k cycles) stores user settings without external memory, and the advanced 16-bit timer generates phase-correct PWM for motor or heater control. The 5V-capable GPIO drives relays and TRIAC drivers directly through transistor buffers. Its robust clock system tolerates appliance EMI, and the 32-pin LQFP keeps the control PCB compact.
Рекомендуется
Sensor Interfaces
The 10-bit ADC with up to 7 channels makes the STM8S105K4T6 a cost-effective sensor hub for analog transducers such as NTC thermistors, pressure bridges, and potentiometers. The I2C and SPI ports connect digital sensors (e.g., ADS1115 for higher-resolution expansion), while the internal RC oscillator removes BOM cost of external crystals in tolerant applications. At 5V operation, ADC full-scale matches industrial sensor outputs without scaling circuitry.
Рекомендуется
Motor Control (Small Fans and Pumps)
Small BLDC fans, pumps, and brushed motor drives benefit from the STM8S105K4T6's 16-bit advanced control timer with complementary PWM outputs and the 10-bit ADC for current and BEMF sensing. Running at 16 MIPS, the core executes basic six-step commutation or closed-loop speed control. The 2.95V-5.5V range aligns with gate-driver supply rails, and fault inputs use GPIO interrupts for fast over-current shutdown.
Рекомендуется
Consumer Electronics and Lighting
For LED dimmers, chargers, and small appliance user interfaces, the STM8S105K4T6 combines low unit cost with UART/I2C connectivity and capacitive-touch-friendly GPIO scanning. The integrated EEPROM keeps calibration and user preferences across power cycles, and Halt mode supports <uA-class standby targets when paired with wake-on-interrupt buttons. The LQFP-32 footprint suits compact, single-sided cost-optimized consumer PCBs.
Рекомендуется
Building Automation Nodes
Wall-mounted thermostats, damper controllers, and occupancy sensors use the STM8S105K4T6 for low-cost node intelligence: UART or I2C links to displays and sensors, ADC channels read potentiometer setpoints and NTC temperature, and the advanced timer drives valve or damper actuators via PWM. The industrial temperature grade and 5V operation fit HVAC wiring conditions, while SWIM enables firmware updates during commissioning without removing the PCB.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для STM8S105K4T6 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | STM8S105K6T6 | STM8S105K4T6C | STM8S103K3T6 | ATMEGA328P-AU |
|---|---|---|---|---|---|
| Package | LQFP-32 | LQFP-32 - same | LQFP-32 - same | LQFP-32 - same | TQFP-32 - same footprint, different pinout |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | Microchip Technology |
| Program Flash | 16 KB | 32 KB | 16 KB | 8 KB | 32 KB |
| Data EEPROM | 1 KB | 1 KB | 1 KB | 640 B | 1 KB |
| Max CPU Clock | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 20 MHz |
| Supply Voltage | 2.95 V - 5.5 V | 2.95 V - 5.5 V | 2.95 V - 5.5 V | 2.95 V - 5.5 V | 1.8 V - 5.5 V |
| ADC | 10-bit, 7 ch | 10-bit, 7 ch | 10-bit, 7 ch | 10-bit, 5 ch | 10-bit, 8 ch |
| Drop-in Compatibility | Reference | Yes - pin-to-pin | Yes - identical | Yes with code change | No - PCB rework required |
| Communication Interfaces | UART, SPI, I2C | UART, SPI, I2C | UART, SPI, I2C | UART, SPI, I2C | UART, SPI, I2C (TWI) |
Ключевые отличия
- Best cost-to-memory ratio for basic control (против STM8S105K6T6)
- True data EEPROM eliminates external NVM (против STM8S103K3T6)
- Same-footprint upgrade path to 32-bit-class features (против ATMEGA328P-AU)
Заметки по проектированию
Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of pin 8, plus a 4.7-10 uF bulk capacitor per board. VCAP requires a 1 uF ceramic capacitor to ground - it stabilizes the internal 1.8V core regulator and must never be omitted or loaded externally. Connect VDDA/VSSA to a clean analog supply, preferably filtered through an RC (10 ohm/1 uF), to preserve 10-bit ADC accuracy.
Reserve the SWIM pin (PD1) with a 2x4 or 1x4 programming header on every production PCB - ST's ST-LINK/V2 programs and debugs in-circuit via SWIM. Route NRST to the header as well for reliable reset control during flashing. Keep analog ADC traces short and away from PWM/timer switching nets to minimize crosstalk into the 10-bit converter.
Do not exceed 5.5V on VDD or apply 5V-tolerant assumptions to NRST. GPIO sink/source limits per ST datasheet must be respected when driving relays - always use transistor or ULN2803 buffers. EEPROM endurance is 300k cycles; avoid logging data at high frequency in main loops, or wear will accumulate quickly. In Halt mode, ensure wake sources (EXTI or reset) are configured before entering the mode, or the device will appear bricked.
Информация о соответствии
RoHS compliant per STMicroelectronics product page. Industrial grade (-40C to +85C), not automotive qualified.
