STM8S105K4T6C - 16MHz 8-bit MCU, 16KB Flash | STMicroelectronics
N.º de pieza: STM8S105K4T6C ✓ ActivoSTM8S105K4T6C Descripción general
An 8-bit microcontroller is a programmable semiconductor device that executes a firmware instruction set and connects external sensors, actuators, and communication circuits through dedicated digital and analog peripherals. STM8S devices belong to the STM8 embedded-control family and combine a low-cost controller core with EEPROM, timers, UART, SPI, I2C, LIN, and ADC capabilities for compact industrial and consumer equipment.
The STM8S105K4T6C provides 16 KB of Flash memory, 2 KB of RAM, and 1 KB of true data EEPROM. Its 7-channel 10-bit ADC supports analog signal acquisition, while the integrated UART, SPI, I2C, and LIN interfaces support communication with sensors, transceivers, displays, and industrial controllers. The device operates from a 3.3 V to 5 V supply range and is specified for -40°C to +85°C ambient operation.
The STM8S core and peripheral arrangement make this device suitable for real-time control tasks that do not require a high-performance 32-bit processor. Eight timer resources support timing, pulse capture, output compare, motor-control, and periodic service functions. The 10-bit ADC resolution is appropriate for monitoring potentiometers, thermistors, and other slowly changing analog quantities in cost-sensitive embedded products.
Typical applications include industrial control panels, motor and actuator controllers, BLDC motor-support subsystems, communication modules, and compact consumer appliances. The LQFP-32 package provides a conventional leaded surface-mount format that is practical for prototypes, automated assembly, and designs requiring easy visual inspection.
Designers should verify the exact pin assignments, electrical limits, clock configuration, and peripheral multiplexing in the STMicroelectronics datasheet before layout. Because the STM8S105K4T6C combines analog measurement and multiple serial interfaces on a 32-pin device, unused pins, decoupling requirements, and signal routing should be checked early in the PCB design.
This product page combines the manufacturer’s STM8S105K4 and STM8S105K4/6 family information, exact MPN identification, practical application guidance, and engineering-focused comparisons. It is intended to help engineers confirm memory capacity, interface coverage, package compatibility, and replacement options before integrating the MCU into an embedded-control design.
Alternativas directas para STM8S105K4T6C — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con STM8S105K4T6C (mismo factor de forma y huella) — difiere en ADC Resolution, Supply Voltage Range, Flash Program Memory, Core Processor, Data EEPROM.
STM8S105K6T6C
✅ Sustitución directaConsulte el precio
Ver hoja de datos →STM8S105K4T3C
✅ Sustitución directaConsulte el precio
Ver hoja de datos →STM8S105K6T3C
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
STM8S105K4T6C Valores máximos y características eléctricas
| Product Type | 8-bit microcontroller |
| Product Family | STM8S Access Line |
| Maximum CPU Frequency | 16 MHz |
| Flash Program Memory | 16 KB |
| RAM | 2 KB |
| Integrated EEPROM | 1 KB |
| ADC Resolution | 10-bit |
| ADC Channels | 7 channels |
| Timer Resources | 8 timers |
| Serial Interfaces | UART, SPI, I2C, LIN |
| Supply Voltage Range | 3.3 V to 5 V |
| Rango de temperatura de funcionamiento | -40°C to +85°C |
| Encapsulado | 32-pin LQFP |
| Tipo de montaje | Surface mount |
| Core | STM8 8-bit core |
| Clock Frequency | 16 MHz maximum |
| Flash Organization | 16K x 8 bits |
Guía de configuración de pines de STM8S105K4T6C 32-pin lqfp
Configuración de pines para STM8S105K4T6C (encapsulado 32-pin lqfp). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para STM8S105K4T6C.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
STM8S105K4T6C es adecuado para 6 aplicacións: Industrial Control Panels, BLDC Motor Support and Actuation, Sensor and IoT Interface Modules, Communication and Protocol Conversion, Consumer Appliance Embedded Control, Automotive and Accessory Electronics.
Industrial Control Panels
The STM8S105K4T6C fits compact control panels that combine local analog inputs with serial coordination of sensors and remote modules. Its 7-channel 10-bit ADC can monitor potentiometers, thermistors, and other variable analog signals, while the 16 MHz core and eight timers support deterministic scanning, debouncing, indicator updates, and actuator timing. UART, SPI, and I2C provide options for display modules, data loggers, and expansion boards without requiring multiple interface devices. The 3.3 V to 5 V operating range and -40°C to +85°C specification suit extended-temperature industrial equipment, subject to final qualification of the complete assembly.
Recomendado
BLDC Motor Support and Actuation
The STM8S105K4T6C is useful in compact BLDC motor-control and actuator designs where an 8-bit controller must coordinate timing, commutation, and monitoring. Eight timer resources provide the timing foundation for pulse-width modulation, input capture, output compare, and periodic commutation, while the 7-channel 10-bit ADC can sample position or current-sense inputs. The MCU is the control processor rather than the power stage, so external transistors, gate drivers, protection, and sensors remain necessary. Its 16 KB Flash and 2 KB RAM suit focused firmware, while the K6T6C option provides additional memory when diagnostics or advanced algorithms are required.
Recomendado
Sensor and IoT Interface Modules
The STM8S105K4T6C can serve as the local controller in a compact sensor gateway, environmental monitor, or configurable industrial IoT node. Its four listed serial interfaces—UART, SPI, I2C, and LIN—allow the controller to connect diverse sensors, radio modules, displays, and service interfaces. The 7-channel 10-bit ADC supports additional analog measurements, and the 1 KB EEPROM can retain configuration or calibration information. Firmware can also use Flash for protocol conversion and local data processing. For connected products requiring more application code or protocol tables, the STM8S105K6T6C increases available Flash from 16 KB to 32 KB without changing the family package platform.
Recomendado
Communication and Protocol Conversion
The STM8S105K4T6C is appropriate for compact protocol-conversion and interface-hub products because it combines UART, SPI, I2C, and LIN in one microcontroller. A single device can collect data from one bus, translate or reformat it, and forward it to another peripheral or logging subsystem. The eight timers support periodic transfers, timeout management, and sensor sampling, while the 10-bit ADC adds monitoring functions where required. Its 16 MHz processing rate and 16 KB Flash are adequate for focused translation firmware. Engineers should reserve program space for boot logic, protocol tables, diagnostics, and future revisions; larger protocol sets may justify the 32 KB STM8S105K6T6C.
Recomendado
Consumer Appliance Embedded Control
The STM8S105K4T6C can manage compact appliances and household devices requiring several mixed functions in one controller. A typical design may use the ADC for knob or sensor monitoring, timers for motor and indicator timing, EEPROM for settings, and I2C or SPI for a display and external sensor. The 3.3 V to 5 V supply range supports common embedded power architectures, while 16 KB Flash and 2 KB RAM fit focused control firmware. The 32-pin LQFP also offers a practical assembly format for cost-sensitive products. Final qualification should cover standby behavior, brownout conditions, noise immunity, and all load states rather than relying only on nominal component specifications.
Recomendado
Automotive and Accessory Electronics
The STM8S105K4T6C may be evaluated for non-safety-critical accessory and body electronics where an 8-bit controller, analog inputs, and multiple serial interfaces are needed. The MCU can coordinate switches, sensors, indicators, and communication modules through its GPIO, ADC, timers, UART, SPI, I2C, and LIN resources. Its -40°C to +85°C range is relevant to automotive-adjacent environments, but the exact AEC-Q100 qualification status must be confirmed for the selected ordering code before use in an automotive design. Functional safety, transient voltage, electromagnetic compatibility, and environmental requirements remain system-level obligations and must be verified independently.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para STM8S105K4T6C — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | STM8S105K6T6C | STM8S105K4T3C | STM8S105K6T3C |
|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 32-pin LQFP | 32-pin LQFP | 32-pin LQFP | 32-pin LQFP |
| Product Family | STM8S Access Line | STM8S Access Line | STM8S Access Line | STM8S Access Line |
| CPU Type | 8-bit STM8 core | 8-bit STM8 core | 8-bit STM8 core | 8-bit STM8 core |
| Maximum Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Flash Program Memory | 16 KB | 32 KB | 16 KB | 32 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB |
| Integrated EEPROM | 1 KB | 1 KB | 1 KB | 1 KB |
| ADC | 7-channel, 10-bit | 7-channel, 10-bit | 7-channel, 10-bit | 7-channel, 10-bit |
| Operating Voltage | 3.3 V to 5 V | 3.3 V to 5 V | 3.3 V to 5 V | 3.3 V to 5 V |
Diferenciadores clave
- Lower Flash capacity supports focused firmware designs (frente a STM8S105K6T6C)
- Matches the T6 ordering-grade configuration (frente a STM8S105K4T3C)
- Provides the required memory and same-package family compatibility (frente a STM8S105K6T3C)
Notas de diseño
Route analog and communication signals according to the pin-assignment table in the STM8S105K4/6 family datasheet, because several 32-pin LQFP leads can be reassigned among GPIO, timer, ADC, UART, SPI, and I2C functions. Place the MCU close to its supply decoupling, keep sensitive analog traces away from switching nodes and motor-drive traces, and use a solid ground-plane strategy to reduce coupling into the 10-bit ADC channels.
Apply the manufacturer’s recommended input and supply decoupling arrangement directly to the power pins. The STM8S105K4T6C supports a 3.3 V to 5 V operating range, so the selected regulator, load switches, and external interface levels must remain compatible with the final rail configuration. Include adequate local bulk capacitance for current transients and verify brownout behavior across the complete power sequence.
Do not assume that all STM8S105 memory variants are drop-in equivalents. STM8S105K4T6C has 16 KB of Flash, whereas STM8S105K6T6C and STM8S105K6T3C have 32 KB; firmware sizing, bootloader assumptions, and revision control must account for the difference. Also compare the T3 and T6 temperature-grade designations against the product’s required ambient range before approving a substitution.
Keep the LQFP footprint mechanical design and assembly rules consistent with STMicroelectronics’ package drawing, including pin-one orientation, lead pitch, solderable land pattern, and copper clearance. Check the board’s assembly facilities for 32-pin LQFP handling and provide adequate component spacing for inspection and rework. The same footprint applies to the listed K-family alternatives, but each ordering code must still be checked for device and temperature-grade requirements.
Información de cumplimiento
No definitive compliance declaration for this exact ordering code was identified. Confirm RoHS, REACH, automotive qualification, lead-free, halogen-free, and conflict-mineral statements on the manufacturer product page or with the manufacturer before qualification.