STM8S105K4T6 - 8-bit MCU, 16KB Flash, 16MHz | STMicroelectronics
MPN: STM8S105K4T6 ✓ AktifSTM8S105K4T6 Ringkasan
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.
Alternatif penggantian untuk STM8S105K4T6 — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian STM8S105K4T6 (sama faktor bentuk dan footprint) — berbeda di dalam Communication Interfaces, Data EEPROM, Operating Temperature, Timers.
STM8S105K6T6
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
STM8S105K4T6C
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
STM8S103K3T6
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
STM8S207K8T6
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
ATMEGA328P-AU
⚡ Pakai Pakai Sama ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →STM8S105K4T6 Rating Maksimal & Karakteristik Listrik
| Core Processor | STM8 8-bit CISC |
| Core Size | 8-bit |
| Frekuensi Bawah Maximum | 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) |
| Suhu Kerja | -40C to +85C |
| Paket | LQFP-32 (7x7 mm) |
| Tipe Mounting | Surface Mount |
| Performance | Up to 16 MIPS at 16 MHz |
| Low Power Modes | Active-halt, Halt |
| Status RoHS | Compliant |
Konfigurasi Pin STM8S105K4T6
| Pin produk 1 | NRST — Active-low bidirectional reset |
| Pin produk 2 | PA1/OSCIN — Port A1 / crystal oscillator input |
| Pin produk 3 | PA2/OSCOUT — Port A2 / crystal oscillator output |
| Pin produk 4 | VSSA — Analog ground |
| Pin produk 5 | VDDA — Analog power supply for ADC |
| Pin produk 6 | VSS — Digital ground |
| Pin produk 7 | VCAP — 1.8V core regulator capacitor |
| Pin produk 8 | VDD — Digital power supply (2.95V-5.5V) |
| Pin produk 9 | PF4 — General purpose I/O |
| Pin produk 10 | PC3/TIM2_CH3 — Port C3 / Timer 2 channel 3 |
| Pin produk 11 | PC4/TIM1_CH4/ADC — Port C4 / Timer 1 channel 4 / ADC input |
| Pin produk 12 | PC5/SPI_SCK — Port C5 / SPI clock |
| Pin produk 13 | PC6/SPI_MOSI — Port C6 / SPI master out |
| Pin produk 14 | PC7/SPI_MISO — Port C7 / SPI master in |
| Pin produk 18 | PD1/SWIM — Port D1 / SWIM debug and programming interface |
| Pin produk 19 | PD2/ADC_ETR — Port D2 / ADC external trigger |
| Pin produk 30 | PA3/TIM2_CH1 — Port A3 / Timer 2 channel 1 |
| Pin produk 32 | PF0 — General purpose I/O |
Aplikasi Umum
STM8S105K4T6 cocok untuk 6 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk STM8S105K4T6 — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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) |
Diferensiator Kunci
- Best cost-to-memory ratio for basic control (vsSTM8S105K6T6)
- True data EEPROM eliminates external NVM (vsSTM8S103K3T6)
- Same-footprint upgrade path to 32-bit-class features (vsATMEGA328P-AU)
Catatan Desain
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.
Informasi Konformitas
RoHS compliant per STMicroelectronics product page. Industrial grade (-40C to +85C), not automotive qualified.
