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The STM32F042K6U6 is a 32-bit ARM Cortex-M0 microcontroller (MCU) from STMicroelectronics, available in a 32-UFQFPN (5×5mm) package with 32KB Flash memory and 6KB RAM for applications such as industrial control, consumer electronics, motor drives and USB devices.

STM32F042K6U6 Features

High-performance 32-bit core

ARM Cortex-M0 architecture with 48MHz main frequency to support efficient data processing.

Harvard architecture + 3-stage pipeline to improve instruction execution efficiency.

Rich storage resources

32KB Flash (supports self-programming)

6KB RAM (operating memory)

No independent EEPROM, but can be emulated by Flash.

Multiple Communication Interfaces

USB 2.0 full-speed interface (Device mode supported)

CAN, LIN, UART/USART, SPI, I²C, IrDA (for industrial communication).

Analogue and digital peripherals

12-bit ADC (13 channels, 1Msps sampling rate)

5×16-bit timer (supports PWM output)

DMA controller (reduces CPU load)

Low power consumption design

Wide voltage supply (1.65V~3.6V) for battery-powered devices.

Multiple power saving modes (standby, shutdown, etc.)

Industrial Grade Reliability

Operating temperature: -40°C ~ +85°C

RoHS compliant, lead-free and environmentally friendly design.

STM32F042K6U6 Specifications

Product Category: ARM Microcontrollers - MCUs

Series: STM32F042K6

Mounting Style: SMD/SMT

Package / Case: UFQFPN-32

Core: ARM Cortex M0

Programme memory size: 32 kB

Data bus width: 32 bit

ADC resolution: 12 bit

Maximum clock frequency: 48 MHz

Number of inputs/outputs: 26 I/Os

Data RAM size: 6 kB

Supply voltage - min: 2 V

Supply voltage - max: 3.6 V

Minimum operating temperature: - 40 C

Maximum operating temperature: + 85 C

STM32F042K6U6 Typical Applications

Industrial automation: PLC, HMI, motor control

Consumer electronics: USB peripherals, smart home devices

Automotive electronics: body control, LIN/CAN nodes

Medical equipment: portable monitors

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