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STM32F042K6U6TR

Cortex-M0 MCU, 48MHz, 32KB Flash, USB 2.0 FS, CAN, 32-UFQFPN

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Manufacturer Part：

STM32F042K6U6TR

Package：

32-UFQFPN (5.0 x 5.0 x 0.6 mm)

Brand：
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Description

Product Overview

The STM32F042K6U6TR from STMicroelectronics is a 32-bit ARM Cortex-M0 microcontroller with 32KB Flash, 6KB SRAM, and 48MHz clock in a 32-UFQFPN (5x5mm) package. It integrates USB 2.0 FS, CAN, HDMI-CEC, and crystal-less USB oscillator for cost-sensitive applications.

Key Specifications

Core ARM Cortex-M0 (32-bit)
Max Clock 48MHz
Flash 32KB
SRAM 6KB
I/O Pins 26
Supply Voltage 1.65V ~ 3.6V
ADC 12-bit, 13 channels
Connectivity USB 2.0 FS, CAN, I2C, SPI, USART

Features

  • Crystal-less USB 2.0 full-speed with integrated 48MHz oscillator
  • CAN 2.0B active interface
  • HDMI-CEC consumer electronics control
  • 5-channel DMA controller
  • Capacitive sensing touch key controller
  • 12-bit ADC up to 1Msps

Applications

  • USB peripheral devices
  • Industrial CAN bus nodes
  • Consumer electronics with HDMI-CEC
  • IoT endpoints and sensor nodes
  • Motor control in small appliances

The STM32F042K6U6TR is an entry-level 32-bit microcontroller from the STM32F0 series, featuring an ARM Cortex-M0 core running at up to 48MHz with 32KB Flash and 6KB SRAM. Its standout feature is the integrated crystal-less USB 2.0 full-speed interface, which eliminates the need for an external crystal and reduces BOM cost. The device also includes a CAN 2.0B interface and HDMI-CEC, making it uniquely suited for consumer and industrial networking applications. A capacitive sensing controller supports touch-key interfaces without external components.

The STM32F042K6U6TR is built around the ARM Cortex-M0 processor core, a 32-bit RISC CPU executing a subset of the Thumb-2 instruction set. The internal 48MHz oscillator can be trimmed by the USB Clock Recovery System (CRS) to meet USB timing accuracy without an external crystal. On-chip peripherals connect via AHB and APB buses with DMA support for offloading data transfers. The nested vectored interrupt controller (NVIC) provides deterministic interrupt handling. Flash memory stores both program code and constant data, with read-while-write capability in dual-bank mode.

Pin Name Type Function
1 VDD Power Digital supply
2 PF0/OSC_IN I/O GPIO / Oscillator input
3 PF1/OSC_OUT I/O GPIO / Oscillator output
4 NRST Input Reset (active low)
5-10 PA0-PA5 I/O GPIO / ADC / TIM / SPI
11 VDDA Power Analog supply
12 VSSA Power Analog ground
13-20 PA6-PA13 I/O GPIO / ADC / TIM / I2C / CAN
21 PA14/SWDCLK I/O SWD clock / GPIO
22-27 PA15-PB3 I/O GPIO / SPI / TIM / USART
28-31 PB4-PB7 I/O GPIO / I2C / USART
32 VSS Power Digital ground
  • USB HID devices (keyboards, mice, custom peripherals)
  • CAN bus sensor nodes in industrial automation
  • HDMI-CEC controlled consumer electronics
  • IoT sensor nodes with capacitive touch UI
  • Small motor control in home appliances
Manufacturer Part Number Package Notes
STMicroelectronics STM32F042C6U6 48-UFQFPN More I/O, 48-pin version
GigaDevice GD32F042K6U6 32-UFQFPN Pin-compatible, 48MHz
NXP LPC11U24FHI33 32-HVQFN Cortex-M0, USB, 50MHz
Microchip SAMD21G15L-MU 48-QFN Cortex-M0+, USB, 48MHz
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Quality Assurance

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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