STM32C051K8T6

Product Overview

The STM32C051K8T6 is a mainstream 32-bit microcontroller from STMicroelectronics based on the Arm Cortex-M0+ processor, operating at up to 48 MHz. It integrates 64KB of Flash memory, 12KB of SRAM with hardware parity checking, a 12-bit ADC, DMA, multiple timers and flexible serial communication interfaces.

Operating from a 2.0V to 3.6V supply, the STM32C051K8T6 is designed for cost-effective embedded control in consumer electronics, industrial equipment, home appliances and IoT devices. Its LQFP-32 package and low-power operating modes make it suitable for compact embedded systems requiring reliable processing and peripheral integration.

Key Features

• 32-bit Arm Cortex-M0+ processor

• CPU frequency up to 48 MHz

• 64KB embedded Flash memory

• 12KB SRAM with hardware parity checking

• Memory Protection Unit (MPU)

• 5-channel DMA controller with flexible mapping

• 12-bit ADC with conversion time as low as 0.4 µs

• Up to 19 external ADC channels, depending on package and pin configuration

• Two I²C interfaces with Fast-mode Plus support

• Two USART interfaces

• Two SPI interfaces, one multiplexed with I²S

• Advanced-control PWM timer

• General-purpose 16-bit and 32-bit timers

• Real-time clock (RTC) with calendar and alarm

• Two watchdog timers

• CRC calculation unit

• 96-bit unique device ID

• Multiple 5V-tolerant I/Os

• Serial Wire Debug (SWD)

• Sleep, Stop, Standby and Shutdown modes

• Supply voltage from 2.0V to 3.6V

• Operating temperature from -40°C to +85°C for the exact T6 variant

• LQFP-32 package

• ECOPACK2 compliant

Technical Specifications

The specifications above refer to the exact STM32C051K8T6 ordering variant. Peripheral availability and pin assignments should be confirmed in the official datasheet before finalizing a design.

Processor & Architecture

The STM32C051K8T6 integrates a 32-bit Arm Cortex-M0+ processor running at up to 48 MHz. The processor provides an efficient computing platform for cost-sensitive embedded applications, including control logic, sensor monitoring and peripheral management.

The microcontroller also incorporates a Memory Protection Unit (MPU), supporting memory-access control in embedded software. Its integrated peripherals reduce the need for additional external components and simplify system design.

Memory & Storage

The STM32C051K8T6 provides integrated memory resources for firmware execution and application data.

• 64KB embedded Flash memory

• 12KB SRAM

• Hardware SRAM parity checking

• Flash read and write protection

• Securable Flash area

• CRC calculation unit

• 96-bit unique device identification

These resources support compact firmware, configuration storage, communication routines and embedded control applications.

Analog Peripherals

The STM32C051K8T6 includes a 12-bit analog-to-digital converter for sensor acquisition, voltage monitoring and measurement tasks.

• 12-bit ADC

• Conversion time as low as 0.4 µs

• Up to 19 external ADC channels at family level, subject to package and pin configuration

• ADC input range up to 3.6V

• Support for embedded sensor and measurement applications

The ADC can be used for reading analog sensors, monitoring system voltages and collecting measurement data. Refer to the datasheet for channel availability, input limits, conversion characteristics and accuracy specifications.

Timer & PWM Resources

The STM32C051K8T6 provides timer resources for real-time control, pulse generation and event measurement.

• Advanced-control PWM timer

• General-purpose 16-bit timers

• One 32-bit general-purpose timer

• Two watchdog timers

• SysTick timer

• RTC with calendar and alarm functions

These resources support PWM generation, input capture, output compare, time-base generation and other timing functions used in embedded control systems.

Communication & Connectivity

The STM32C051K8T6 integrates several serial interfaces for connecting sensors, peripheral devices and external controllers.

• Two I²C interfaces

• Fast-mode Plus support up to 1 Mbit/s

• Two USART interfaces

• Two SPI interfaces

• One I²S interface multiplexed with SPI

• Synchronous serial communication capabilities on supported USART functions

• Serial Wire Debug (SWD)

The interfaces support communication with external sensors, displays, memory devices and other embedded components. Available functions depend on pin multiplexing and peripheral configuration.

Clock & Power Management

The STM32C051K8T6 includes flexible clock-generation and reset-management resources.

• External crystal oscillator options

• Internal 48 MHz RC oscillator

• Internal 32 kHz RC oscillator

• External 32 kHz crystal oscillator support

• Phase-locked loop (PLL) clock-generation support

• Power-on and power-down reset

• Programmable brownout reset

• Clock control for peripheral power management

These resources allow developers to configure the clock system according to performance, timing and power-consumption requirements.

Low-Power Operation

The STM32C051K8T6 provides several power-saving modes for energy-conscious embedded designs.

• Sleep mode

• Stop mode

• Standby mode

• Shutdown mode

• RTC-based timing and wake-up support

• Peripheral clock management

• Low-power operation for suitable embedded workloads

These features make the device suitable for smart appliances, monitoring systems, battery-powered controllers and other applications that benefit from reduced power consumption between processing tasks.

Power Management

The STM32C051K8T6 operates from a supply voltage of 2.0V to 3.6V.

• Supply voltage: 2.0V to 3.6V

• Power-on reset

• Power-down reset

• Programmable brownout reset

• Integrated power-management functions

• Multiple low-power operating modes

Appropriate power-supply decoupling and PCB layout are important for stable operation. Consult the official datasheet for current consumption, voltage thresholds and electrical operating limits.

Security & Data Integrity

The STM32C051K8T6 includes features that help protect firmware and improve data integrity.

• Flash read protection

• Flash write protection

• Securable Flash area

• Hardware SRAM parity checking

• CRC calculation unit

• Memory Protection Unit

• 96-bit unique device ID

• Programmable brownout reset

These features support embedded software protection and system reliability. They should not be interpreted as a substitute for a dedicated secure-element device when an application requires advanced security certification or specialized key storage.

Development & Debugging

The STM32C051K8T6 supports Serial Wire Debug (SWD) for programming, debugging and firmware development.

STMicroelectronics provides development resources for STM32C0 microcontrollers, including:

• STM32CubeIDE

• STM32CubeMX configuration tools

• STM32CubeC0 software resources

• ST-LINK programming and debugging tools

• Official datasheets and reference manuals

• Application notes and firmware examples

These resources help engineers configure peripherals, develop firmware and troubleshoot embedded applications.

Applications

The STM32C051K8T6 is suitable for a variety of embedded applications, including:

• Consumer electronics

• Home appliances

• Industrial control

• Sensor monitoring

• Smart devices

• IoT endpoints

• Power and voltage monitoring

• Lighting control

• User interfaces

• General-purpose embedded controllers

• Measurement equipment

• Compact automation systems

Benefits

• 48 MHz Cortex-M0+ processing performance

• 64KB Flash memory

• 12KB SRAM with hardware parity checking

• Integrated 12-bit ADC

• Flexible DMA controller

• Multiple serial communication interfaces

• PWM and general-purpose timers

• RTC and watchdog resources

• Multiple low-power modes

• Compact LQFP-32 package

• Industrial-grade operating temperature range

• STM32Cube software and development ecosystem

Packaging & Ordering Information

• Part Number: STM32C051K8T6

• Manufacturer: STMicroelectronics

• Device Family: STM32C051K8

• Package: LQFP-32

• Package Code: LQFP32

• Package Size: 7 × 7 × 1.4 mm

• Packing Type: Tray

• Supply Voltage: 2.0V to 3.6V

• Operating Temperature: -40°C to +85°C

• Product Status: Active

• Grade: Industrial

• RoHS: ECOPACK2

The exact STM32C051K8T6 is listed by STMicroelectronics as an active, tray-packaged LQFP-32 device. Confirm current stock and lead time before placing an order.

Datasheet

For complete electrical characteristics, pin configuration, memory architecture, ADC specifications, timer configuration, communication interfaces, absolute maximum ratings, and application information, please refer to the official STMicroelectronics documentation.

Datasheet: Official STM32C051K8 Datasheet

Frequently Asked Questions

What is the STM32C051K8T6?

The STM32C051K8T6 is a 32-bit microcontroller from STMicroelectronics based on the Arm Cortex-M0+ core, with a 48 MHz CPU, 64KB Flash, 12KB SRAM and integrated analog and communication peripherals.

What is the maximum operating frequency?

The maximum CPU frequency is 48 MHz.

How much Flash memory does the STM32C051K8T6 have?

It provides 64KB of embedded Flash memory.

How much SRAM does the STM32C051K8T6 have?

It provides 12KB of SRAM with hardware parity checking.

What ADC does the STM32C051K8T6 include?

It includes a 12-bit ADC with a conversion time as low as 0.4 µs. The available external channels depend on the package and pin configuration.

What package does the STM32C051K8T6 use?

The exact part uses an LQFP-32 package measuring 7 × 7 × 1.4 mm.

What is the operating voltage?

The specified supply-voltage range is 2.0V to 3.6V.

What is the operating temperature range?

The STM32C051K8T6 is specified for operation from -40°C to +85°C.

Is the STM32C051K8T6 an active product?

Yes. STMicroelectronics lists this ordering variant as an active product.

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