My Inquiry
My Account
STMicroelectronics STM32F042T6Y6TR
- Part No.:
- STM32F042T6Y6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 36-UFBGA, WLCSP
- Datasheet:
-
STM32F042T6Y6TR.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 36WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,989
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32F042T6Y6TR from STMicroelectronics is a 32-bit ARM® Cortex®-M0 microcontroller with 32 KB Flash, 6 KB SRAM, crystal-less USB 2.0 Full-Speed interface, CAN 2.0B controller, and 48 MHz max CPU frequency. It integrates a 12-bit ADC (1.0 µs conversion), nine timers including one advanced-control timer for six-channel PWM, and operates from 2.0–3.6 V supply-used in industrial sensor nodes requiring integrated USB-CDC communication and real-time motor control.
For engineers reviewing the STM32F042T6Y6TR datasheet, STM32F042T6Y6TR pinout, STM32F042T6Y6TR application, or STM32F042T6Y6TR equivalent, key selection criteria include USB FS timing autonomy (48 MHz internal oscillator with automatic trimming), CAN bus physical layer compatibility, 5 V-tolerant I/O count (up to 24 pins), and support for capacitive touch sensing on up to 14 channels.
Technical Context
The device implements a multi-source clock architecture with four internal oscillators (HSI8, HSI14, HSI48, LSI) and external options (HSE 4–32 MHz, LSE 32.768 kHz), enabling precise USB frame synchronization via CRS (Clock Recovery System) without external crystal. Its power management includes three low-power modes (Sleep, Stop, Standby) with RTC and backup register retention powered by VBAT.
Peripheral integration centers on system-level connectivity: dual USARTs (one with ISO7816/LIN/IrDA), two SPIs (one multiplexed with I2S), one I2C Fast Mode Plus (1 Mbit/s), CAN 2.0B, and HDMI CEC-all accessible via fully remappable GPIOs with interrupt capability and 5 V tolerance on selected pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 48 MHz max - enables deterministic real-time execution for motor control loops and USB protocol stack handling. |
| Memory | 32 KB Flash + 6 KB SRAM with hardware parity - supports firmware updates over USB and robust data logging in safety-critical edge nodes. |
| USB Interface | Crystal-less USB 2.0 Full-Speed (48 MHz internal oscillator with auto-trimming) - eliminates external crystal cost and PCB area while meeting USB frame timing accuracy. |
| CAN Interface | CAN 2.0B controller with dedicated TX/RX pins and programmable bit timing - enables direct connection to automotive or industrial CAN networks without transceiver logic translation. |
| ADC | 12-bit, 1.0 µs SAR ADC (10 channels, 0–3.6 V range) with separate VDDA supply - allows simultaneous sampling of analog sensors (e.g., temperature, current) with minimal power supply coupling noise. |
| I/O Capability | Up to 38 fast I/Os; 24 pins 5 V tolerant - simplifies interfacing with legacy 5 V peripherals and industrial digital I/O modules without level shifters. |
| Timers | Nine timers: one 16-bit advanced-control (TIM1), one 32-bit general-purpose (TIM2), four 16-bit (TIM3/14/16/17), plus watchdogs - supports complex PWM generation, encoder input capture, and time-stamped event logging. |
Pinout & Package
STM32F042T6Y6TR uses the UFQFPN32 (5 × 5 mm, 0.5 mm pitch) package with 32-pin layout optimized for compact industrial and USB-peripheral designs. Thermal pad enhances thermal dissipation under sustained 48 MHz operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power and ground rails | Dual-supply separation (digital/analog) reduces noise coupling into ADC and RTC circuits. |
| PA11/PA12 | USB DM/DP | Dedicated full-speed USB transceiver pins with internal pull-ups - enable plug-and-play CDC/DFU functionality without external components. |
| PB8/PB9 | CAN RX/TX | Direct CAN physical layer interface - requires only external CAN transceiver (e.g., TJA1042) for bus compliance. |
| PA0–PA7, PB0–PB15, PF0–PF1 | General-purpose I/O | 38 total I/Os; 24 support 5 V tolerance and independent VDDIO2 supply - simplify mixed-voltage system integration. |
| NRST | Active-low reset | Asynchronous reset input with internal pull-up - ensures reliable initialization during power ramp and brown-out conditions. |
| BOOT0 | Boot mode select | Configures boot source (system memory, Flash, SRAM); pulled low by default for Flash execution. |
Key Features
| Feature | Design Value |
|---|---|
| Crystal-less USB FS | Internal 48 MHz HSI48 oscillator with automatic trimming against USB SOF packets - achieves ±0.25% frame timing accuracy without external crystal or PLL lock time. |
| Capacitive Touch Sensing | 14-channel TSC supporting touchkey, linear, and rotary sensors - enables UI implementation with no external ICs or calibration firmware overhead. |
| Low-Power RTC | Calendar RTC with alarm and periodic wakeup from Stop/Standby using 32 kHz LSE - maintains timekeeping at <1 µA while preserving 32 B of backup registers. |
| Programmable Voltage Detector | PVD with 4 selectable thresholds (2.0–2.9 V) - triggers interrupt or reset before brown-out, protecting Flash writes and SRAM integrity. |
| Independent Watchdog | IWDG with 12-bit downcounter and 40 kHz LSI clock - provides fail-safe reset independent of main clock domain for functional safety monitoring. |
Applications
| Industrial Sensor Node | USB Human Interface Device |
|---|---|
Use Scenario: Compact environmental monitor collecting temperature, humidity, and CO₂ via analog/digital sensors, transmitting data via virtual COM port. IC Role / Device Role / Timing Role: Central MCU managing sensor acquisition, USB CDC communication, and low-power scheduling with RTC-triggered wakeups every 10 seconds. Use Value: Crystal-less USB eliminates BOM cost and layout complexity; 5 V-tolerant I/Os interface directly with legacy RS-485 transceivers and digital inputs. | Use Scenario: Programmable keyboard or industrial control panel with tactile buttons and LED feedback. IC Role / Device Role / Timing Role: HID-class USB device implementing key matrix scanning, debouncing, and report generation at 125 Hz polling rate. Use Value: Integrated TSC supports up to 14 capacitive keys; advanced-control timer generates precise LED PWM dimming synchronized with USB SOF. |
| Motor Control Edge Node | CAN-Based Building Automation |
Use Scenario: Brushless DC motor driver with Hall-effect commutation, current sensing, and local fault reporting. IC Role / Device Role / Timing Role: Real-time controller executing FOC algorithms, generating 6-channel complementary PWM with dead-time insertion, and monitoring overcurrent events. Use Value: TIM1 advanced timer provides hardware-driven PWM sync and fault protection; 12-bit ADC samples current shunt at 1 MSPS for closed-loop stability. | Use Scenario: Lighting controller in smart building network receiving commands and reporting status over CAN bus. IC Role / Device Role / Timing Role: CAN node handling message filtering, transmission arbitration, and error confinement per ISO 11898-1. Use Value: Dedicated CAN peripheral offloads CPU from bit timing management; 32 KB Flash stores multiple lighting profiles and firmware update image. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F042K6T6 | LQFP32 package (7 × 7 mm), same core/peripherals but different pinout and thermal profile | Better suited for prototyping and manual soldering; larger footprint eases test probe access | Select when board space allows larger package and hand-soldering is required. |
| STM32F072CBT6 | 64 KB Flash, USB OTG FS, additional DMA channels and timers, higher operating temperature grade (–40 to +105 °C) | Supports more complex USB device classes (e.g., MSC, HID composite) and extended runtime in hot environments | Choose when future firmware expansion or extended ambient temperature operation is needed. |
Compared with STM32F042K6T6, the T6Y6TR offers superior thermal performance in dense layouts due to its exposed thermal pad; versus STM32F072CBT6, it trades Flash capacity and temperature range for lower unit cost and smaller footprint-ideal for high-volume, space-constrained USB peripherals.
Availability
STM32F042T6Y6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, USB human interface devices, motor control edge nodes, and CAN-based building automation systems requiring stable component supply across multi-year production cycles.
Supply support for STM32F042T6Y6TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade components since 1987.
The STM32F0 series targets cost-sensitive, resource-constrained embedded applications requiring ARM Cortex-M0 performance with rich analog and connectivity peripherals-optimized for industrial control, consumer USB devices, and smart sensors.
FAQ
Does STM32F042T6Y6TR require an external crystal for USB operation?
No. The device features an internal 48 MHz HSI48 oscillator with automatic trimming based on USB Start-of-Frame (SOF) synchronization, achieving ±0.25% timing accuracy without any external crystal or resonator-reducing BOM cost and PCB area.
What is the maximum number of 5 V-tolerant I/Os on this part?
STM32F042T6Y6TR supports up to 24 I/O pins with 5 V tolerance, all located on GPIO ports A and B. These pins can safely interface with 5 V logic levels while operating from a 3.3 V supply, eliminating need for external level translators in mixed-voltage systems.
Can the built-in capacitive touch controller operate without external components?
Yes. The integrated Touch Sensing Controller (TSC) supports up to 14 channels using standard GPIOs as charge-transfer electrodes. No external RC networks or dedicated touch ICs are required-calibration and baseline tracking are handled in firmware using ST's Touch Sensing Library.
Is CAN communication supported in low-power Stop mode?
No. CAN peripheral is disabled in Stop mode. However, the device supports wakeup from Stop mode via CAN bus activity (using CAN RX pin as EXTI source), allowing rapid resumption of CAN processing after bus event detection-enabling ultra-low-power listening states.
STM32F042T6Y6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 36-UFBGA, WLCSP
- Series:
- STM32F0
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- CANbus, HDMI-CEC, I2C, IrDA, LINbus, SPI, UART/USART, USB
- Peripherals:
- DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 30
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 6K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- A/D 13x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F042T6Y6TR FAQ
1.How can I place an order for STM32F042T6Y6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F042T6Y6TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32F042T6Y6TR reliable?
The price and inventory of STM32F042T6Y6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F042T6Y6TR is usually 5 days.
3.What payment methods are accepted for STM32F042T6Y6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F042T6Y6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F042T6Y6TR?
STM32F042T6Y6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F042T6Y6TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32F042T6Y6TR?
For technical support, including STM32F042T6Y6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F042T6Y6TR requirements.
6.How does Aetrix verify that STM32F042T6Y6TR is sourced from the original manufacturer or authorized distributors?
All STM32F042T6Y6TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F042T6Y6TR meets industry standards.
7.What is the process for return or replacement of STM32F042T6Y6TR?
All STM32F042T6Y6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F042T6Y6TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32F042T6Y6TR part is unused and in its original packaging.
Return procedure for STM32F042T6Y6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32F042T6Y6TR Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
