Item specifics
Description
The STM8S105C6T6 is a mainstream access line 8-bit MCU from STMicroelectronics, classified as a medium-density device in the STM8S family reference manual (RM0016). Featuring a 16 MHz advanced STM8 core with Harvard architecture and 3-stage pipeline, it delivers up to 20 MIPS processing capability. It integrates 32 KB Flash program memory, 2 KB RAM, and 1 KB true data EEPROM (up to 100k write/erase cycles). On-chip peripherals include a 10-bit ADC (up to 10 channels with scan mode and analog watchdog), 16-bit advanced control timer (4 CAPCOM channels, 3 complementary outputs with dead-time insertion), two 16-bit general-purpose timers (total 5 CAPCOM channels), 8-bit basic timer, auto wakeup timer, window and independent watchdog timers, and UART (with clock output for synchronous operation, SmartCard, IrDA, LIN master mode), SPI (up to 8 Mbit/s), and I2C (up to 400 Kbit/s) interfaces. Packaged in LQFP-48 (7×7 mm) with 38 I/Os and highly robust I/O design immune against current injection, it operates from 2.95 V to 5.5 V over -40 °C to 85 °C. Ideal for industrial control, sensor modules, automotive electronics, and cost-sensitive applications requiring robust performance.[reference:7][reference:8][reference:9]
Advanced Core: 16 MHz STM8 core, Harvard architecture, 3-stage pipeline, extended instruction set, up to 20 MIPS, up to 37 external interrupts, 32 nested interrupts Memory: 32 KB Flash (20-year data retention at 55 °C after 10k cycles), 2 KB RAM, 1 KB true data EEPROM (100k write/erase cycles) 10-bit ADC: Up to 10 multiplexed channels, ±1 LSB accuracy, scan mode and analog watchdog Advanced Control Timer: 16-bit, 4 CAPCOM channels, 3 complementary outputs, dead-time insertion and flexible synchronization General-Purpose Timers: 2x 16-bit, total 5 CAPCOM channels (IC/OC/PWM); 8-bit basic timer with 8-bit prescaler Auto Wakeup Timer: Wakeup from Active-halt mode Dual Watchdogs: Window watchdog + Independent watchdog with separate clock source Communication Interfaces: UART with clock output for synchronous operation, SmartCard, IrDA, LIN master mode; SPI up to 8 Mbit/s; I2C up to 400 Kbit/s Clock System: 4 master clock sources (external clock, crystal oscillator, user-trimmable 16 MHz RC, low-power 128 kHz RC), clock security system with monitor Low-Power Modes: Wait, Active-halt, Halt; individually switchable peripheral clocks High Reliability: Low-consumption POR/PDR, highly robust I/O design immune against current injection, 96-bit unique ID per device LQFP-48 Package: 7×7×1.4 mm, 38 I/Os Wide Operating Range: 2.95 V to 5.5 V, -40 °C to 85 °C Development Support: Embedded SWIM single-wire interface for fast on-chip programming and non-intrusive debugging
Industrial Control: PLCs, sensor transmitters, RS-485 communication nodes, small actuator control; wide temperature reliability LED Lighting: Dimming control, RGB strips, switching power supplies; direct PWM drive Battery Management: Protection boards, fuel gauges, charge management; low-power modes reduce standby consumption Home Appliances: Induction/microwave oven panels, small appliance main controllers Sensor Modules: Temperature/humidity/gas sensing; 10-bit ADC + I2C/UART flexible networking Consumer Electronics: Remote controls, electric toothbrushes, electronic toys; high-value 48-pin solution Motor Control: Fans, pumps, small motors; advanced timer with complementary PWM and dead-time Automotive Electronics: Vehicle light control, window anti-pinch, automotive sensor nodes (non-safety-critical)
20 MIPS High Performance: 16 MHz STM8 core with Harvard architecture and 3-stage pipeline, delivering up to 20 MIPS for complex control algorithms Ultra-Cost-Effective: 32 KB Flash + 2 KB RAM + 1 KB true EEPROM + 10-bit ADC (10 channels) + multiple timers + UART/SPI/I2C in LQFP-48 package, minimizing BOM cost True EEPROM: 1 KB true data EEPROM with 100k write/erase cycles, reliably storing calibration parameters and operation logs without external memory ICs Advanced Timer for Motor Control: 4 CAPCOM channels, 3 complementary outputs with dead-time insertion, driving half-bridge circuits and motor control Rich I/O Resources: 38 I/Os, meeting complex peripheral connectivity needs Robust & Reliable: 4 clock sources + clock security system, low-consumption POR/PDR, independent watchdog with separate clock source Mature Ecosystem: STM8 classic architecture, rich documentation, low-cost SWIM debug, shortening development cycles Stable Supply Chain: STMicroelectronics mainstream access line with massive global shipments, ensuring stable supply
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FAQ:
What is the STM8S105C6T6 and its key specifications?
The STM8S105C6T6 is an 8‑bit microcontroller from STMicroelectronics based on the STM8 core at up to 16 MHz. It provides 32 KB of Flash program memory, 2 KB of SRAM, and 1 KB of true data EEPROM. On‑chip peripherals include a 10‑bit ADC, an advanced control timer (TIM1) with 3 complementary PWM pairs, general‑purpose timers (TIM2, TIM4), and communication interfaces: UART, SPI, I2C. Housed in an LQFP‑48 package, it provides 38 I/O pins and operates over ‑40 °C to +85 °C. It does not include a CAN controller, making it a cost‑effective, feature‑rich choice for motor control, industrial sensing, and home appliance applications.
How does the STM8S105C6T6 differ from the STM8S105C4T6?
Both share the same LQFP‑48 package, peripherals, and SRAM/EEPROM sizes. The only difference is the Flash memory: the C6T6 has 32 KB of Flash, while the C4T6 has 16 KB. SRAM (2 KB) and EEPROM (1 KB) are identical. Both feature the TIM1 motor‑control timer with three complementary PWM pairs and lack a CAN interface. Choose the C6T6 if you need extra code space for larger firmware or future updates; the C4T6 is a more cost‑optimized option when 16 KB is sufficient.
What is the difference between STM8S105C6T6 and STM8S207C8T6?
Both are LQFP‑48 MCUs, but the S207C8T6 is a higher‑end device. The S207C8T6 offers 64 KB Flash, 6 KB SRAM, 2 KB EEPROM, and — crucially — a CAN 2.0B controller, while the S105C6T6 has 32 KB Flash, 2 KB SRAM, 1 KB EEPROM, and no CAN. Both share the same TIM1 motor‑control timer. Choose the S105C6T6 for simpler, cost‑sensitive designs without networking needs; choose the S207C8T6 when you require CAN connectivity and more memory.
Does the STM8S105C6T6 have a CAN bus interface?
No. The STM8S105C6T6 does not include a CAN controller. It is designed for applications that require robust motor control and standard communication (UART, SPI, I2C) but do not need automotive or industrial CAN networks. If CAN is a must, consider the STM8S207 or STM8S208 series.
Can the STM8S105C6T6 drive a brushless DC motor directly?
Yes. The advanced timer TIM1 provides 3 complementary PWM pairs with programmable dead‑time insertion and a break input. This allows the MCU to directly control a three‑phase inverter or a BLDC motor half‑bridge without external dead‑time logic. It is widely used in fans, pumps, power tools, and home appliances.
What are the ADC specifications of the STM8S105C6T6? How many analog channels are available?
It features a 10‑bit successive‑approximation ADC. Internally, up to 16 multiplexed analog input channels are supported. In the LQFP‑48 package, depending on digital pin usage, typically 10 to 12 external analog channels are accessible. The ADC can also measure an internal voltage reference and can be triggered by TIM1 for synchronized current sensing.
How much memory does the STM8S105C6T6 have?
It provides 32 KB of Flash program memory, 2 KB of SRAM, and 1 KB of true data EEPROM. This generous memory configuration for an 8‑bit MCU comfortably handles motor‑control algorithms, communication stacks, and application logic.
What package does the STM8S105C6T6 use and how many I/O pins are there?
It comes in an LQFP‑48 package (7 mm × 7 mm, 0.5 mm lead pitch) and provides 38 general‑purpose I/O pins. This offers a great balance between compact size and rich connectivity for mid‑complexity embedded designs.
Can the STM8S105C6T6 be powered directly from 5 V?
Yes, it is a true 5 V‑capable microcontroller. The operating voltage range is 2.95 V to 5.5 V, so it can be powered directly from a standard 5 V rail, USB, or a loosely regulated supply. All I/O pins are 5 V tolerant, simplifying interfaces with legacy TTL and CMOS logic.
How to program and debug the STM8S105C6T6? What are its typical applications?
Programming and debugging use the single‑wire SWIM interface. A low‑cost ST‑LINK/V2 is the standard tool. Firmware can be developed with STVD + Cosmic C or the open‑source SDCC compiler, and ST provides standard peripheral libraries. Typical applications include home appliances, industrial sensors, motor drives (fans, pumps, power tools), power supplies, and general‑purpose 8‑bit control. Its combination of three‑phase motor control, 5 V operation, and generous I/O makes it a reliable choice for many cost‑sensitive embedded projects.