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STMicroelectronics STM8S105C6T6
- Part No.:
- STM8S105C6T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8S105C6T6.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,659
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Product details
Overview
STM8S105C6T6 from STMicroelectronics is an 8-bit access-line microcontroller featuring a 16 MHz STM8 core, 32 Kbyte Flash with 20-year data retention at 55 °C, 1 Kbyte true EEPROM (300 kcycle endurance), 10-bit ADC with 10-channel multiplexing, and integrated UART, SPI, and I²C interfaces - deployed in industrial sensor nodes and motor control subsystems.
For engineers reviewing the STM8S105C6T6 datasheet, STM8S105C6T6 pinout, STM8S105C6T6 application, or STM8S105C6T6 equivalent, key selection criteria include its LQFP48 package compatibility, 2.95–5.5 V wide supply range, nested 32-interrupt controller, low-power active-halt mode, and hardware debug support via SWIM interface.
Technical Context
The STM8S105C6T6 implements a Harvard-architecture 8-bit core with 3-stage pipeline and extended instruction set, enabling deterministic real-time execution. It integrates dual watchdog timers (independent + window), auto-wakeup timer, and clock security system with monitor for fail-safe operation.
Its analog subsystem includes a 10-bit ADC with ±1 LSB INL/DNL, scan mode, and analog watchdog; digital peripherals comprise TIM1 (16-bit advanced timer with dead-time insertion), two 16-bit general-purpose timers (TIM2/TIM3), and an 8-bit basic timer (TIM4) - all supporting flexible clock gating and low-power state retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16 MHz STM8 8-bit Harvard core with 3-stage pipeline and extended instruction set - enables cycle-accurate timing control in resource-constrained firmware. |
| Flash Memory | 32 Kbyte on-chip Flash with 10 kcycle endurance and 20-year data retention at 55 °C - supports field firmware updates without external memory. |
| Data EEPROM | 1 Kbyte true data EEPROM with 300 kcycle write endurance - stores calibration data, device IDs, or configuration parameters across power cycles. |
| ADC Resolution | 10-bit SAR ADC with ±1 LSB integral/non-linear error, 10-channel multiplexing, and analog watchdog - suitable for precision sensor signal acquisition. |
| Communication Interfaces | UART (with LIN/SmartCard/IrDA support), SPI (up to 8 Mbit/s), and I²C (up to 400 kbit/s) - enables interoperability with legacy and modern peripheral buses. |
| Supply Voltage Range | 2.95 V to 5.5 V - allows direct integration with 3.3 V and 5 V logic domains without level-shifting circuitry. |
| Low-Power Modes | Wait, active-halt, and halt modes with individual peripheral clock gating - reduces system standby current to sub-μA levels while preserving RAM and register state. |
Pinout & Package
LQFP48 (7 × 7 mm, 0.5 mm pitch) package with 48 leads; RoHS-compliant, surface-mountable, and rated for industrial temperature range (–40 °C to +85 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main digital supply input (2.95–5.5 V); decoupled via external 100 nF capacitor near pin. |
| VSS | Ground reference | Digital ground return path; multiple pins ensure low-impedance grounding for noise immunity. |
| NRST | Active-low reset input | Asynchronous reset trigger with internal pull-up; accepts external push-button or supervisor IC assertion. |
| SWIM | Single-wire interface module | Debug and programming interface using one bidirectional pin - eliminates need for JTAG header footprint. |
| PA0–PA7 | Programmable I/O port A | 8-bit general-purpose port with high-sink capability (20 mA per pin); configurable as GPIO, ADC input, or timer channel. |
| PC0–PC7 | Programmable I/O port C | 8-bit port supporting UART2 TX/RX, SPI SCK/MOSI/MISO, and I²C SCL/SDA alternate functions - enables shared pin routing flexibility. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated True EEPROM | 1 Kbyte on-die EEPROM with 300 kcycle endurance - eliminates external serial EEPROM for parameter storage. |
| Hardware Debug Interface | SWIM single-wire debug module - enables full-speed in-circuit debugging and flash programming with minimal PCB footprint. |
| Advanced Control Timer (TIM1) | 16-bit timer with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time insertion - supports 3-phase motor gate drive without external logic. |
| Flexible Clock System | Four selectable clock sources: HSE crystal (1–24 MHz), HSI RC (16 MHz, user-trimmable), LSI RC (128 kHz), and external clock input - simplifies board-level clock architecture. |
| Robust I/O Design | Up to 38 I/Os including 16 high-sink outputs (20 mA), immunity to current injection per IEC 61000-4-2 - enhances reliability in electrically noisy industrial environments. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Brushless DC motor commutation in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Real-time PWM generation, ADC-based current sensing, and fault monitoring via TIM1 and ADC1. Use Value: Integrated dead-time insertion and 10-bit current sampling enable precise torque control without external gate drivers or ADCs. |
Use Scenario: Battery-powered environmental sensor hub aggregating temperature, humidity, and CO₂ readings. IC Role / Device Role / Timing Role: Low-power data acquisition, I²C/SPI peripheral management, and UART-based wireless gateway interface. Use Value: Active-halt mode with sub-1 μA current draw extends battery life; on-chip EEPROM stores calibration offsets across replacements. |
| Home Appliance UI Controller | PLC Digital I/O Module |
Use Scenario: Keypad scanning, LED display driving, and buzzer tone generation in washing machine control panels. IC Role / Device Role / Timing Role: GPIO matrix scanning, PWM dimming control, and beeper tone synthesis via TIM4 and I/O ports. Use Value: 38 robust I/Os with high-sink capability directly drive LEDs and relays; built-in beeper module reduces BOM count. |
Use Scenario: DIN-rail mounted digital input/output expansion for industrial PLC backplanes. IC Role / Device Role / Timing Role: Isolated signal conditioning, status reporting over UART, and watchdog-monitored state retention. Use Value: Clock security system and dual watchdogs ensure fail-safe shutdown during communication loss or firmware hang. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8S005K6T3C | Same core and peripherals but in LQFP32 package; 20 Kbyte Flash, no TIM1 advanced timer. | Lacks 3-phase motor control capability; limited I/O count (25 vs 38) and no complementary PWM outputs. | Select when space-constrained layout and reduced peripheral set suffice - not suitable for motor control. |
| EFM8BB52F16G-C-QFP32 | Silicon Labs 8051-based MCU; 16 Kbyte Flash, 2.25–3.6 V supply, 12-bit ADC, no integrated EEPROM. | Requires external EEPROM for non-volatile storage; narrower voltage range limits direct 5 V system integration. | Prefer for ultra-low-power (<1 μA deep sleep) or USB-enabled designs where 8051 toolchain familiarity matters. |
Compared with STM8S105C6T6, STM8S005K6T3C trades motor-control capability and I/O count for smaller footprint, while EFM8BB52F16G-C-QFP32 offers lower sleep current but adds external memory cost and voltage compatibility constraints.
Availability
STM8S105C6T6 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, home appliance UI controllers, and PLC digital I/O modules requiring stable component supply across multi-year production cycles.
Supply support for STM8S105C6T6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
The STM8S series targets cost-sensitive, high-reliability embedded applications requiring robust peripherals, long-term availability, and mature development tools - emphasizing ease of migration from legacy 8-bit platforms.
FAQ
Does STM8S105C6T6 support in-system programming via SWIM?
Yes. The STM8S105C6T6 features a dedicated SWIM (Single-Wire Interface Module) pin that enables full in-system programming and debugging using ST-LINK/V2 or compatible programmers. No external bootloader code is required, and flash memory can be reprogrammed while the device remains soldered on the target board.
What is the maximum operating frequency at 3.3 V supply?
At VDD = 3.3 V, the STM8S105C6T6 supports a maximum CPU clock frequency of 16 MHz, matching its full-rated speed. This is confirmed by Figure 11 (fCPUmax vs. VDD) in DS5855 Rev 16, which shows no derating below 5.5 V down to 2.95 V.
Can the internal 16 MHz RC oscillator be calibrated for improved accuracy?
Yes. The internal high-speed RC oscillator (HSI) is user-trimmable via the CLK_HSITRIMR register, allowing adjustment in steps of ±0.5% across a ±8% total range. Calibration against an external reference enables typical accuracy of ±1% over temperature and voltage, sufficient for UART communication at 115.2 kbps.
Is there hardware support for LIN bus communication?
Yes. The UART2 peripheral includes dedicated LIN master mode with automatic sync field generation, break detection, and checksum calculation - enabling compliant LIN 2.2 communication without software bit-banging or external transceivers beyond the physical layer driver.
STM8S105C6T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM8S
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- 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:
- 38
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.95V ~ 5.5V
- Data Converters:
- A/D 10x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8S105C6T6 FAQ
1.How can I place an order for STM8S105C6T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8S105C6T6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM8S105C6T6 reliable?
The price and inventory of STM8S105C6T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8S105C6T6 is usually 5 days.
3.What payment methods are accepted for STM8S105C6T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8S105C6T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8S105C6T6?
STM8S105C6T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8S105C6T6 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM8S105C6T6?
For technical support, including STM8S105C6T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8S105C6T6 requirements.
6.How does Aetrix verify that STM8S105C6T6 is sourced from the original manufacturer or authorized distributors?
All STM8S105C6T6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM8S105C6T6 meets industry standards.
7.What is the process for return or replacement of STM8S105C6T6?
All STM8S105C6T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM8S105C6T6, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM8S105C6T6 part is unused and in its original packaging.
Return procedure for STM8S105C6T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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